Altair Radioss 2019
Tutorials
altairhyperworks.com
Contents
Intellectual Property Rights Notice............................................................................. ii
Technical Support............................................................................................................ vi
HyperCrash Tutorials....................................................................................................... 8
RD-T: 3000 Tensile Test Setup............................................................................................9
RD-T: 3030 Buckling of a Tube Using Half Tube Mesh.......................................................... 20
RD-T: 3050 Simplified Car Pole Impact.............................................................................. 31
RD-T: 3060 Three Point Bending....................................................................................... 45
RD-T: 3150 Seat Model with Dummy.................................................................................67
RD-T: 3160 Multi-Domain Analysis Setup..........................................................................103
HyperMesh Tutorials.....................................................................................................112
RD-T: 3500 Tensile Test Setup........................................................................................ 113
RD-T: 3510 Cantilever Beam with Bolt Pretensioner........................................................... 124
RD-T: 3520: Pre-processing for Pipes Impact.................................................................... 138
RD-T: 3530 Buckling of a Tube Using Half Tube Mesh........................................................ 148
RD-T: 3540 Front Impact Bumper Model.......................................................................... 164
RD-T: 3550 Simplified Car Front Pole Impact.................................................................... 177
RD-T: 3560 Bottle Drop..................................................................................................190
RD-T: 3580 Boat Ditching...............................................................................................203
Boat Ditching with Boundary Elements..................................................................... 203
Boat Ditching without Boundary Elements.................................................................215
RD-T: 3590 Fluid Flow through a Rubber Clapper Valve......................................................226
RD-T: 3595 Three Point Bending with HyperMesh.............................................................. 240
RD-T: 3597 Cell Phone Drop Test.................................................................................... 257
RD-T: 3599: Gasket with HyperMesh............................................................................... 273
Index.................................................................................................................................287
1
Intellectual Property Rights Notice
Copyrights, Trademarks, Trade Secrets, Patents & Third Party Software Licenses
Altair Radioss 2019 Copyright 1986-2019
The Platform for Innovation™
Altair Engineering Inc. Copyright © 1986-2019. All Rights Reserved.
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ALTAIR ENGINEERING INC. Proprietary and Confidential. Contains Trade Secret Information.
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Technical Support
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Location
Telephone
E-mail
Australia
64.9.413.7981
anzsupport@altair.com
Brazil
55.11.3884.0414
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Canada
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p.vii
Location
Telephone
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support@altairjp.co.jp
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aseansupport@altair.com
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For questions or comments about this help system, send an email to connect@altair.com.
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See www.altair.com for complete contact information.
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HyperCrash Tutorials
HyperCrash Tutorials
This chapter covers the following:
•
RD-T: 3000 Tensile Test Setup (p. 9)
•
RD-T: 3030 Buckling of a Tube Using Half Tube Mesh (p. 20)
•
RD-T: 3050 Simplified Car Pole Impact (p. 31)
•
RD-T: 3060 Three Point Bending (p. 45)
•
RD-T: 3150 Seat Model with Dummy (p. 67)
•
RD-T: 3160 Multi-Domain Analysis Setup (p. 103)
1
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p.9
RD-T: 3000 Tensile Test Setup
This tutorial demonstrates how to simulate a uniaxial tensile test using a quarter size mesh with
symmetric boundary conditions.
Figure 1:
The model is reduced to one-quarter of the total mesh with symmetric boundary conditions to simulate
the presence of the rest of the part.
Figure 2:
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time Rootname_0001.rad [0 - 10.]
• Boundary Conditions:
◦
The 3 upper right nodes (TX, RY, and RZ)
◦
A symmetry boundary condition on all bottom nodes (TY, RX, and RZ)
• At the left side is applied a constant velocity = 1 mm/ms on -X direction.
• Tensile test object dimensions = 11 x 100 with a uniform thickness = 1.7 mm
Johnson-Cook Elastic Plastic Material /MAT/PLAS_JOHNS (Aluminum 6063 T7)
-6
[Rho_I] Initial density = 2.7e
3
Kg/mm
[E] Young's modulus = 60.4 GPa
[nu] Poisson's ratio = 0.33
[a] Yield stress = 0.09026 GPa
[b] Hardening parameter = 0.22313 GPa
[n] Hardening exponent = 0.374618
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[EPS_max] Failure plastic strain = 0.75
[SIG_max] Maximum stress = 0.175 GPa
Input file for this tutorial: TENSILE_0000.rad
Create and Assign a Material
1. From the menu bar, select Model > Material.
2. Right-click in the material list and select Create New > Elasto-plastic > Johnson-Cook (2).
3. For Title, enter Aluminum. Enter all the material data listed above.
4. In the bottom of the material window, right-click in the Support entry box and select Include
picked parts icon
.
Figure 3:
5. Select the part in the modeling window (left-click).
6. Right-click to validate the selection.
7. Press Enter or click Save > Close.
Create and Assign a Property
1. From the menu bar, select Model > Property.
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2. Right-click in the property list and select Create New > Surface > Shell (1).
3. For Title, enter Pshell.
4. For Shell Thickness, enter 1.7.
5. In the bottom of the property window, right-click in the Support entry box and select the
Include picked parts icon
.
6. Select the part in the modeling window.
7. Right-click to validate the selection.
8. Click Save > Close.
Define Boundary Conditions Representing Symmetry
1. From the menu bar, select LoadCase > Boundary Condition.
2. Right-click in the display list area and select Create New.
3. For Name, enter constraint1 and click Save.
4. Expand the folders Translation and Rotation.
5. Right-click in the Support entry box, click Select in graphics and select the Add/Remove
nodes by picking selection icon
to select the nodes in the modeling window, as shown in the
figure below:
Figure 4:
6. Click Yes in the Dialog menu bar to validate your selection.
7. To constrain the nodes, toggle Tx, Ry and Rz and click Save.
8. Repeat the same operations to create constraint2, as shown in the figure below:
Figure 5:
9. Toggle Tx, Ty, Tz, Rx, Ry and Rz, and click Save.
10. Repeat the same operations to create constraint3, as shown in the figure below.
11. Press Shift, left-click and hold the mouse to draw a box to select the nodes.
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Figure 6:
12. Toggle Ty, Rx, and Rz.
13. Click Save > Close.
Define Imposed Velocity
1. From the menu bar, select LoadCase > Imposed > Imposed Velocity.
2. Right-click in the display list area and select Create New.
3. Set the Title to imposed_velocity.
4. Right-click in the entry box for Time function and select Define Function.
A Function Window opens up.
5. For Function name, enter FUNC_VEL.
6. Enter the first point (0,1) and click Validate.
7. Enter the second point (1e30,1) and click Validate.
8. Click Save in the dialog.
9. Right-click in the Support entry box, click Select in graphics and select the Add nodes by box
selection icon
, to select the nodes in the modeling window, as shown in the figure below:
Figure 7:
10. Go to the Properties tab and enter a Y-Scale factor = -1.
11. Ensure Direction of the imposed velocity is set to X (translation).
12. Click Save > Close.
Define a Time History Node
1. From the menu bar, select Data History > Time History.
2. In the list display area, right-click and select Create New > TH of nodes.
3. Enter the title Node_79.
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4. Click Add Row
p.13
to add a new row.
5. With that row selected, scroll down to the input section and enter NODid as 79 and press Enter.
As an alternative, use the Pick button to select a node in the modeling window.
6. Click Save > Close.
Export the Model
1. From the menu bar, select Model > Control Card:
Figure 8:
2. Enter the values for the Control Cards, as shown in the images below, saving after every step:
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Figure 9:
Figure 10:
Figure 11:
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Figure 12:
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Figure 13:
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Figure 14:
3. Click File > Export > Radioss to export the solver file.
4. In the Write Block Format 140 Radioss File window that opens, navigate to your desired run
directory and create a new folder named TENSILE_TEST.
5. For filename, enter TENSILE and click OK.
6. Leave the Header window empty and click on Save Model.
The file TENSILE_0000.rad is written.
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The model is now ready to run through the Starter and the Engine. It will produce the result files
TENSILEA* for animation in HyperView and TENSILE01 for time history plotting in HyperGraph.
Expected Results
Figure 15: Total Displacement Contour (mm)
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Figure 16: Plastic Strain Contour
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RD-T: 3030 Buckling of a Tube Using Half Tube
Mesh
This tutorial simulates buckling of a tube using half tube mesh with symmetric boundary conditions.
The figure illustrates the structural model used for this tutorial: a half tube with a rectangular section
(38.1 x 25.4 mm) and length of 203 mm.
Figure 17: Model
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time: Engine [0 - 10 ms]
• The tube thickness is 0.914 mm.
• An imposed velocity of 13.3 mm/ms (~30 MPH) is applied to the right end of the tube
• Elasto plastic material using Johnson-Cook law /MAT/PLAS_JOHNS (STEEL).
[Rho_Initial] Initial density = 7.85e
-6
3
Kg/mm
[E] Young's modulus = 210 GPa
[nu] Poisson coefficient = 0.3
[a] Yield Stress = 0.206 GPa
[b] Hardening Parameter = 0.450 GPa
[n] Hardening Exponent = 0.5
File needed to complete this exercise: BOXTUBE_0000.rad
Start HyperCrash
1. Open HyperCrash.
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2. Set the User profile to Radioss V14 and the Unit system to kN mm ms.kg.
3. Set User Interface style as New.
4. Set the working directory to <install_directory>/tutorials/hwsolvers/radioss.
5. Click Run.
6. Click File > Import > Radioss.
7. In the input window, select BOXTUBE_0000.rad.
8. Click OK.
Create and Assign a Material
1. Click Model > Material.
2. In the window, right-click and choose Create New > Elasto-plastic > Johnson-Cook (2).
Figure 18:
3. For Title, enter Steel.
4. Enter all the material data, as shown in the following figure.
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Figure 19:
5. Right-click in the Support entry box and click Select in graphics.
6. Select Include picked parts
and select boxtube in the modeling window.
7. Press Enter, or click Yes in the lower right corner.
8. Click Save and then click Close.
Create and Assign a Property
1. Click Model > Property.
2. In the window, right-click and select Create New > Surface > Shell (1).
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Figure 20:
3. For Title, enter Pshell.
4. For Shell thickness, enter 0.914.
Figure 21:
5. Right-click in the Support entry box and click Select in graphics.
6. Select Include picked parts
and select boxtube in the modeling window.
7. Press Enter, or click Yes in the lower right corner.
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8. Click Save and then click Close.
Define the Rigid Body
1. Click Mesh Editing > Rigid Body. Right-click in the display list area and select Create New.
2.
Right-click in the modeling window and select Add nodes by box selection icon
nodes in the modeling window, as shown below:
to select the
Figure 22:
3. Press Enter or click Save to validate.
Figure 23:
Note: For the remainder of the tutorial, you need to have the ID of the master node
of the rigid body.
4.
Click Show Node Info icon
in the toolbar, and select the rigid body master node in the
modeling window.
The Node ID appears in the message window (node ID: 803).
5. Click Cancel in the lower right corner to exit the picking loop.
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6. Click Close.
Define Boundary Conditions
1. Click LoadCase > Boundary Condition.
2. Right-click in the display list area and select Create New.
3. In the Boundary condition field, enter the name Rigid_BC.
4. In the Node by Id field, enter 803, then click Ok.
5. To constrain the nodes, toggle Tx, Ty, Rx, Ry and Rz.
Figure 24:
6. Click Save.
Define Boundary Conditions Representing Symmetry
1. In the Boundary condition display list area, select Create New.
2. Name the new constraint set symmetry.
3. Right-click in the Support entry box and click Select in graphics.
4.
Select Add nodes by box selection icon
shown below:
Figure 25:
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to select the nodes in the modeling window, as
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5. Right-click to validate.
6. Toggle Tx, Ry and Rz.
7. Click Save and then click Close.
Define the Imposed Velocity
1. Click LoadCase > Imposed Velocity. Right-click in the display list area and select Create New.
2. For Title, enter VELOCITY.
3. Right-click in the Time function parameter entry box and select Define New.
A Function Window opens.
4. For the function name, enter FUNC_VEL.
5. Enter the first point (0, 13.3) and click Validate.
6. Enter the second point (1e30, 13.3) and click Validate.
7. Click Save in the Function Window to accept the function.
8. Expand the Advanced selector at the bottom and in the Node by Id field, enter 803 and click Ok,
(or toggle Add RB master nodes).
9. Go to the Properties tab and enter a Y-Scale factor = -1.
10. Set the direction of the imposed velocity to Z (translation).
11. Click Save and then click Close.
Figure 26:
Define a Rigid Wall
1. Click LoadCase > Rigid Wall > Create.
2. For Select RWALL, select Infinite Plane.
3. For Title, enter RIGID WALL.
4. Enter the following values:
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M0:
X= 0
Y= 38.1
Z= -204
M1:
X= 0
Y= 38.1
Z= 1
5. In the Distance to search slave nodes field, enter 20.
6. Toggle See.
7. Click See to visualize it in the modeling window.
Figure 27:
8. Click Save and then click Close.
Create a Self Contact for the Tube
1. Click LoadCase > Contact Interface.
2. Right-click in the Contact Interface list and select Create New > Multi usage (Type 7).
3. Toggle Self impact.
Figure 28:
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4. Right-click in the modeling window, and select Include picked parts icon
in the modeling window.
5. Click Yes in the lower right corner of the main window to validate.
6. For Title, enter the name Contact.
7. Set Scale factor for stiffness as 1.
8. Set Min. gap for impact active to 0.900.
9. Set Coulomb friction to 0.200.
10. Click Save and then click Close.
Export the Model
1. Under the Model menu, select Control Card.
2. Check Control Card to activate it.
Note: Make sure to save it before moving to the next Control Card.
Figure 29:
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and select the part
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Figure 30:
Figure 31:
Figure 32:
3. Click File > Export > Radioss.
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4. In the Write Block Format 140 Radioss File window that opens up, enter the name as BOXTUBE and
click OK.
5. Leave the Header of Radioss File window empty and click Save Model.
The Starter file BOXTUBE_0000.rad is written. The model is now ready to run through the Starter
and the Engine.
Open Radioss from the Windows Start Menu
Figure 33:
Review the Results
Using HyperView, plot the displacement and strain contour at 10 ms.
Figure 34:
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RD-T: 3050 Simplified Car Pole Impact
To simulate frontal pole test with a simplified full car.
Figure 35:
Model Description
• UNITS: Length (mm), Time (s), Mass (ton), Force (N) and Stress (MPa)
• Simulation time: Engine file (_0001.rad) [0 - 0.06 ms]
• An initial velocity of 15600 mm/s is applied on the car model to impact a rigid pole of radius 250
mm.
• Elasto-plastic Material /MAT/PLAS_JOHNS (WINDSHIELD)
[Rho_Initial] Initial Density = 2.5x10
-9
ton/mm
3
[E] Young's Modulus = 76000 MPa
[nu] Poisson's Ratio = 0.3
[ 0] Yield Stress = 192 MPa
[K] Hardening Parameter = 220 MPa
[n] Hardening Exponent = 0.32
• Elasto-plastic Material /MAT/PLAS_JOHNS (STEEL)
[Rho_Initial] Initial Density = 7.9x10
-9
ton/mm
[E] Young's Modulus = 210000 MPa
[nu] Poisson's Ratio = 0.3
[ 0] Yield Stress = 200 MPa
[K] Hardening Parameter = 450 MPa
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[n] Hardening Exponent = 0.5
[SIG_max] Maximum Stress = 425 MPa
• Elasto-plastic Material /MAT/PLAS_JOHNS (RUBBER)
[Rho_Initial] Initial Density = 2x10
-9
ton/mm
3
[E] Young's Modulus = 200 MPa
[nu] Poisson's Ratio = 0.49
[ 0] Yield Stress = 1e
30
MPa
[n] Hardening Exponent = 1
Start HyperCrash
1. Open HyperCrash.
2. Set the User profile to Radioss V14 and the Unit system to kN mm ms.kg.
3. Set User Interface style as New.
4. Set the working directory to <install_directory>/tutorials/hwsolvers/radioss.
5. Click Run.
6. Click File > Import > Nastran.
7. In the input window, select full_car.nas.
8. Click OK.
Create and Assign WINDSHIELD Material
1. Click Model > Material.
2. In the Material list, right-click and select Create New > Elasto-plastic > Johnson-Cook (2).
3. For Title, enter WINDSHIELD.
4. Enter all the material data, as shown in the image below.
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Figure 36:
5. Click the Tree tab and select PSHELL3 and PSHELL16 in the tree.
6. Click
to show only these parts.
7. Click the Material tab.
8. Right-click in the Support entry box and click Selected Parts of Tree
.
This icon allows adding the part selected in the tree to the selection. The selected parts will be
highlighted in the modeling window.
9. Click Save.
Create and Assign RUBBER Material
1. In the Material list, right-click and select Create New > Elasto-plastic > Johnson-Cook (2).
2. For Title, enter RUBBER. Enter all the material data, as shown in the image below.
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Figure 37:
3. Click the Tree tab and select PSHELL20 to PSHELL23 in the tree.
4. Click
to show only these parts.
5. Click the Material tab.
6. Right-click in the Support entry box and click Selected Parts of Tree
.
The selected parts will be highlighted in the modeling window.
7. Click Save.
Create and Assign STEEL Material
1. In the Material list, right-click and select Create New > Elasto-plastic > Johnson-Cook (2).
2. For Title, enter STEEL.
3. Enter all the material data, as shown in the image below.
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Figure 38:
4. Click the Tree tab and select PSHELL3, PSHELL16 and PSHELL20 to PSHELL23 in the tree.
5. Click
to invert the tree selection.
6. Click
to show all the parts except the ones made with glass and rubber.
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Figure 39:
7. Click the Material tab.
8. Right-click in the Support entry box and click Selected Parts of Tree
The selected parts will be highlighted in the modeling window.
9. Click Save > Close.
Create the Ground Rigid Wall
1. Click LoadCase > Rigid Wall > Create.
2. Under Rigid wall name > Select RWALL type, select Infinite Plane.
3. Enter the rigid wall name, Ground.
4. Enter the following values for M0 and M1:
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Figure 40:
5. In the Selection tab, set the Distance to search for slave nodes to 300.
6. Click See at the bottom of the panel to display the rigid wall.
7. Click Save.
Creat3 Pole Rigid Wall
1. Under Rigid wall name > Select RWALL type, select Cylinder.
2. Enter the rigid wall name, Pole.
3. Enter the following values for M0 and M1:
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Figure 41:
4. Set the Diameter to 500.
5. Set the Distance to search for slave nodes to 1500.
6. Click See at the bottom of the panel to display the rigid cylinder.
7. Click Save.
8. Click Close to close the Rigid Walls panel.
Create an Interface for the Full Car
1. Click LoadCase > Contact Interface.
2. In the window right-click and select Create New > Multi usage (Type 7).
3. Select the Self Impact box.
4. In the Title field, enter CAR_CAR.
5. Set [Istf] Stiffness definition to 2: (K=(Km+Ks)/2.
6. For [Gapmin] Min. gap for impact activ., enter 0.7.
7. For [Fric] Coulomb friction, enter 0.2.
8. Set [Iform] Friction penalty formulation to 2: (Stiffness).
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9.
In the Model Display toolbar, click Display All
p.39
to display the entire model.
10. Click in the [Mast_id] Master field. Move the cursor to the modeling window and right-click.
The menu shown in the image below should appear.
Figure 42:
11.
Choose the option Add selected parts by box
the entire car in the modeling window.
and use the mouse to drag a box to select
12. Click Save.
Create an Interface between Engine and Radiator
1. Right-click in the Contact list and select Create New > Multi usage (Type 7).
2. Check Create symmetric interface at saving box.
3. In the Title field, enter ENGINE_RADIATOR.
4. For [Istf] Stiffness definition, set to 2 (K=(Km+Ks)/2.
5. For [Gapmin] Min. gap for impact active, enter 0.7.
6. For [Fric] Coulomb friction, enter 0.2.
7. For [Iform] Friction penalty formulation, set to 2 [Stiffness].
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8. In the Tree tab, highlight the part PSHELL28 (Radiator) and PSHELL30 (Engine) and Isolate
them.
9. In the Contact Interface tab, click in the [Slav_id] Slave nodes field, move the cursor to the
modeling window, right-click and select Include picked Part. Select the Radiator (PSHELL28).
10. In the Contact Interface tab, click in the [Mast_id] Master Surface field, move the cursor to the
modeling window, right-click and select Include picked Part. Select the Engine (PSHELL30).
11. Click Save.
12. Click Close to close the Contact tab.
An additional symmetric interface is created.
Define Initial Velocities
1. Click LoadCase > Initial Velocity.
2. In the Velocity list, right-click and select Create New.
3. In the Title field, enter 35MPH.
4. In the Tree window, highlight FULL_CAR.
5. In the [Vx] field, enter 15600.
6. In the Initial Velocity tab, click in the [Gnod_id] Support field. Move the cursor to the modeling
window, right-click and select Add selected parts of tree
.
7. Click Save > Close.
Define Time History Nodes
1. Click Data History > Time History.
2. In the Time History list, right-click and select Create New > TH of nodes.
3. For Title, enter RAIL.
4. In the Tree tab, select PSHELL19.
5. Click Isolate Tree Selections
.
6. Go back to the Time History panel and click Add/Remove nodes by picking selection
second table.
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Figure 43:
7. Select six nodes on the rails, for example as shown in the following image:
Figure 44:
8. Click Yes in the lower right corner or right-click in the modeling window to exit the selection.
9. Click Save > Close.
Export the Model
1. To create the Engine file, from the menu bar, select Model Control Card.
2. Check the Control Cards, as shown in the images below.
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Note: Make sure to save all control cards before editing the next.
Figure 45:
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Figure 46:
3. Under the Quality menu, click Model Checker to check the quality, then check All Solver
Contact interfaces, remove all the initial penetrations in the model.
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4. Under the Mesh Editing menu, click Clean, then clean the model before exporting.
5. Click File > Export > Radioss, enter FULLCAR and click OK.
6. Leave the Header of Radioss File window empty and click Save Model.
The Starter file FULLCAR_0000.rad is written.
7. Open Radioss from Windows Start menu.
Figure 47:
8. Select the Starter file FULLCAR_0000.rad as Input file and click Run to run the model.
Expected Results
Figure 48: Final Deformation and Energy Balance Plot
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RD-T: 3060 Three Point Bending
This tutorial demonstrates how to set up 3-point bending model with symmetric boundary conditions in
Y direction.
Figure 49:
Model Description
• UNITS: Length (mm), Time (s), Mass (ton), Force (N) and Stress (MPa)
• Simulation time: in Engine file [0 - 6.601e-002 s]
• Only one half of the model is modeled because it is symmetric.
• The supports are totally fixed. An imposed velocity of 1000 mm/s is applied on the Impactor in the
(-Z) direction
• Model size = 370mm x 46.5mm x 159mm
• Honeycomb Material /MAT/LAW28: HONEYCOMB
[Rho_I] Initial density = 3.0e
-10
ton/mm
3
[E11], [E22] and [E33] Young's modulus (Eij) = 200 MPa
[G11], [G22] and [G33] Shear modulus (Gij) = 150 MPa
• Elasto-Plastic Material /MAT/LAW36: Inner, Outer and Flat
[Rho_I] Initial density = 7.85
-9
ton/mm
3
[E] Young's modulus = 210000 MPa
[nu] Poisson's ratio = 0.29
• Strain Curve:
0
1
2
3
4
5
6
7
8
9
STRAIN 0
0.0120020.0140030.0180030.0220020.0260030.0300060.032
STRESS 325
335.968 343783 349.245 358.649 372.309 383.925 388.109 389.292 389.506
• Elastic Material /MAT/PLAS_JOHNS: Impactor
[Rho_I] Initial density = 8e
-9
ton/mm
3
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[E] Young's modulus = 208000 MPa
[nu] Poisson's ratio = 0.29
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Retrieve the Model File
1. Click File Import Solver Deck or click
2.
.
Click the Select File icon
to open the BENDING_0000.rad file you saved to your working
directory from the radioss.zip file.
3. Click Import.
4. Click Close to close the window.
Create and Assign Material
1. Click Model > Material.
2. In the window, right-click and select Create New > Elastic > Linear elastic (1) as shown
below:
Figure 50:
3. For Title, enter Rigid Material.
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4. Enter all the material data, as shown in the following image.
Figure 51:
5. Right-click in the entry box Support, and click Include picked parts
to select the parts
Impactor and Support in the modeling window.
6. Click Yes in the lower right corner.
7. Press Enter or click Save to validate.
Create and Assign Material for Parts
1. In the window, right-click and select Create New > Elastic > Piecewise linear (36).
2. For Title, enter Shell Material.
3. Enter all the material data, as shown in the following image:
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Figure 52:
4. Open the Strain rate folder and click
to add a row.
5. Right-click in Yield stress function field and click Select in Model to select an existing function
in the model.
Figure 53:
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6. In the Function file window, select the function with an ID of 2, then click OK to import the curve.
The function can be edited, as shown in the image below.
Figure 54:
7. Click the Tree tab and select the parts Inner, Outer, and Flat on the tree.
8. Click
to isolate this selection.
9. Click the Material tab.
10. Right-click in the entry box Support, and click Include picked parts
to select the parts
Inner, Outer and Flat in the modeling window as shown in the following image.
Figure 55:
11. Click Yes in the lower right corner.
12. Press Enter or click Save to validate.
Create and Assign HCFoam Material
1. In the window, right-click and select Create New > Elastic > Honeycomb orthotropic (28).
2. For Title, enter Foam.
3. Enter all the material data, as shown in the following image:
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Figure 56:
4. Right-click on the Yield stress function 11 field and click Select in Model to select a curve
already present in the model.
5. In the Function file window, select the function with ID of 5, then select OK.
6. Repeat this process for the Yield functions, as shown in the following image.
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Figure 57:
7. Click the Tree tab and select the part HCFoam (7) on the tree.
8. Click
to isolate this selection.
9. Click the Material tab.
10. Right-click in the entry box Support, and click Include picked parts
the modeling window as shown in the following image.
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Figure 58:
11. Click Yes in the lower right corner.
12. Click Save > Close.
Create and Assign a Property
1. Click Model > Property.
2. In the window, right-click and select Create New > Surface > Surface > Shell (1).
Figure 59:
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3. For Title, enter Shell Property.
4. Enter Shell thickness and Shell element formulation values, as shown in the following image.
Figure 60:
5. Click the Tree tab and select the parts Inner, Outer and Flat on the tree.
6. Click
to isolate this selection.
7. Click the Property tab.
8. Right-click in the entry box Support, and click Include picked parts
to select the parts
Inner, Outer and Flat in the modeling window to assign Shell property.
9. Click Yes in the lower right corner.
10. Click Save.
Create and Assign an Impactor and Support Property
1. For Title, enter Rigid Property.
2. Enter the Shell thickness value as .9119, as shown in the following image.
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Figure 61:
3. Click the Tree tab and select the parts Impactor and Support in the tree.
4. Click
to show only these parts.
5. Click the Property tab.
6. Right-click in the entry box Support, and click Include picked parts
to selects Impactor
and Support in the modeling window to assign Rigid property.
7. Click Yes in the lower right corner.
8. Click Save.
Create and Assign HCFoam Property
1. In the window, right-click and select Create New > Volume > General solid (14).
2. For Title, enter Foam.
3. Click the Tree tab and select HCfoam on the tree.
4. Click
to isolate this selection.
5. Go back to the Property tab.
6. In the Flag for solid elements formulation field, select HEPH.
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Figure 62:
7. Right-click in the entry box Support, and click Include picked parts
to select HCfoam in
the modeling window to assign Foam property.
8. Click Yes in the lower right corner.
9. Click Save > Close.
Create Impactor Rigid Body
1. From the menu bar, click Mesh Editing > Rigid Body.
2. In the window, right-click to select Create New, enter the name Impactor.
3. Click the Tree tab and select the Impactor assembly on the tree.
4. Click
to show all parts.
5. Click the Mesh Editing tab.
6. Right-click in the entry box Support, and click Include picked parts
the modeling window.
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Figure 63:
7. Click Yes in the lower right corner.
8. Press Enter or click Save to validate.
Create a Support Rigid Body
1. In the Title field, enter the name Support.
2. Right-click in the entry box Support, and click Include picked parts
the modeling window.
3. Click Yes to complete the selection.
4. Click Save.
The rigid body for Support should look like the following image.
Figure 64:
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5. Click Close.
Define Boundary Conditions
1. Click LoadCase > Boundary Condition.
2. In the window, right-click to select Create New.
3. Press F6 to show the rigid bodies.
4. In the Title field, enter Boundary.
5. Right-click in the entry box Support and right-click in the modeling window. Click Add/Remove
nodes by picking selection and select the master node of the rigid body.
Figure 65:
6. Constrain all DOF except translation in Z as shown in the following image. To constrain the nodes,
check the boxes for TX, TY, RX, RY and RZ.
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Figure 66:
7. Click Save.
8. Repeat the same process to create boundary conditions for the Support and Symmetry boundary
condition for the inner/outer/flat.
9. Click the node selection icon
to select the master node of Support, as shown in the following
image.
Figure 67:
10. Constrain all DOF by selecting TX, TY, TZ, RX, RY and RZ, as shown in the following image.
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Figure 68:
11. Click Save.
12. In the Boundary condition creation field, enter Symmetry.
13. Click the Tree tab and select the parts Inner, Outer, HCfoam and Flat on the tree.
14. Click
to isolate this selection.
15. Press the p key to change the perspective visualization.
16. Click the Boundary Condition tab.
17. From the Visualization toolbar, select the YZ View, as shown below.
Figure 69:
18. Right-click in the entry box Support, right-click in the modeling window, and click Add nodes by
box selection to select the nodes, as shown in the image below.
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Figure 70:
19. To constrain the nodes, select TY, RX and RZ.
Figure 71:
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20. Click Save > Close.
Define Imposed Velocity
1. Click LoadCase > Imposed > Imposed Velocity.
2. In the window, right-click to select Create New.
3. For Title, enter IMPOSED VELOCITY.
4. For Direction, select Z (translation) and -1000 for Y-Scale factor.
5. For Time function, use the predefined curve in the model Funct 1.
6. For Y Scale factor, enter -1000.
7. Press the F6 key to show the rigid bodies.
8. Click in the entry box Support and right-click in the modeling window. Click
master node of Impactor.
9. Click Yes in the lower-right corner.
Figure 72:
10. Click Save > Close.
Define Contacts
1. Click LoadCase > Contact Interface.
2. In the window, right-click and select Create New > Multi usage (Type 7).
3. Click on the check box next to Create symmetric interface at saving.
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4. For Title, enter Support.
5. Click the Tree tab and select the parts Flat and Support on the tree.
6. Click
to isolate this selection.
7. Click the Contact Interface tab.
8. Set Min gap for impact active to 0.2.
9. Set Coulomb friction to 0.1.
10. Set [Iform] Friction penalty formulation at 2[Stiffness].
11. Click in the Slave nodes entry box and right-click in the modeling window.
A menu appears.
12. Click Include Picked Parts and select FLAT.
13. Press Y or click Yes at the bottom right of the screen.
You are automatically moved to the selection of the Master surface.
14. Right-click and click Include Picked Parts and select Support.
15. Press Y or click Yes at the bottom right of the screen.
Figure 73:
16. Click Save.
17. Repeat the same process to create contact between Outer and Impactor.
18. Click the Tree tab and select the parts Outer and Impactor on the tree.
19. Click
to isolate this selection.
20. Right-click in the window and select Create New > Multi usage (Type 7).
21. Click the Contact Interface tab.
22. Click on the check box next to Create symmetric interface at saving.
23. In the Title, enter Imp_Outer.
24. Set Min gap for impact active to 0.2.
25. Set Coulomb friction to 0.1.
26. Set [Iform] Friction penalty formulation to 2[Stiffness].
27. Select Outer Part as Slave and Impactor as Master, as shown in the following image.
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Figure 74:
28. Click Save .
29. Repeat the same process for self impact for Outer, Inner and Flat, as self impact.
30. Click the Tree tab and select the parts Outer, Inner and Flat on the tree.
31. Click
to isolate this selection.
32. Click the Contact Interface tab.
33. Select Self-Impact.
34. Set Title as Self.
35. Set the Min gap for impact active to 0.7.
36. Set the Coulomb friction to 0.1.
37. Set [Iform] Friction penalty formulation to 2[Stiffness].
38. Select components Outer, Inner and Flat, as shown in the following image.
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Figure 75:
39. Click Save.
Clean the Model
1. Click Mesh Editing > Clean.
Figure 76:
2. Select All.
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3. Click Clean > Close.
Export the Model
1. Click Model > Control Card and select the control cards in the images below.
Note: Make sure to save each control card before editing the next.
Figure 77:
Figure 78:
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Figure 79:
Figure 80:
2. Click File > Export > Radioss.
3. In the Output window that opens, enter the name 3PBENDING and click OK.
4. Leave the Header of Radioss File window empty and click Save Model.
The Starter file 3PBENDING_0000.rad is written.
5. Open Radioss Manager from windows Start menu.
Figure 81:
6. Run the model 3PBENDING_0000.rad using Radioss Manager in the class_exercise folder.
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RD-T: 3150 Seat Model with Dummy
This tutorial presents the different steps involved in building a simple Sled model using HyperCrash preprocessing tool.
Start HyperCrash
1. Open HyperCrash.
2. Set the User profile to Radioss V14 and the Unit system to N_mm_s_T.
3. Set User Interface style as New.
4. Set the working directory to <install_directory>/tutorials/hwsolvers/radioss.
5. Click Run.
6. Click File > Import > Radioss.
7. In the input window, select SEAT__00D00.rad.
8. Click OK.
Merge Models
1. Click File > Import > Radioss.
Figure 82:
A HyperCrash message window prompt appears.
2. Click Merge.
3. Select the file FLOORD00.rad.
4. Click OK.
5. In the Set all to field, enter the value 100000.
6. Click the Set all to button to offset the numbering of all the entities.
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Figure 83:
7. Click Merge to merge the floor model.
8. Redo the steps 1 to 7 for the cushion model:
File:
• FOAMD00.rad
• Set all to offset: 200000
9. Redo the steps 1 to 7 for the seatbelt model:
File:
• BELTD00.rad
• Set all to offset: 300000
Set Model Hierarchy
1. Click the Tree tab and select the subset of the seat named Seat model (300005).
2. Right-click and select Change Name.
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Figure 84:
3. In the Change Name window, enter the name Seatbelt.
4. Click Ok.
5. Click any item on the tree, right-click and select New Assembly.
6. Enter the name Frame and click Ok.
7. Select the parts Seat plate, Backseat plate, Feet, Seat frame, and Backseat frame using the
SHIFT or CTRL keys.
8. Press and hold the middle mouse button and drag the selected parts into the new assembly
Frame.
9. Select the Tree root (Seat) and right-click.
10. In the pop-up menu, select List Selection.
Figure 85:
The List Selection dialog opens.
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11. In the displayed window, check if all parts have properties (PID) and materials (MID).
12. Click Close and Export the model to save.
Connect Models
To add the feet of the seat and the seatbelt anchorage point to the floor rigid body:
1. Click Mesh Editing > Rigid Body.
Figure 86:
2. Select the rigid body: Floor.
3. Click See selected rigid bodies (
4. Click Display All
).
and then Left View (F11).
5. Right-click in the Grnod_Id entry box and click Select in graphic, click
Add nodes by box
selection and select all the nodes of the seat, feet and the anchorage points of the seatbelt.
6. Right-click to validate.
7. Select the Floor rigid body in the list, right-click and add the rigid body and master node to time
history.
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Figure 87:
Connect Seat Cushion to Seat Frame
1. Click LoadCase > Contact Interface.
2. Right-click in the window and select Create New > Kinematic condition (Type 2).
Figure 88:
3.
Display only the cushion parts. Press F11 for XZ view, select Slave nodes section, and click
Add noes by box selection.
4. Holding down the Shift key, click to draw a polygon window around nodes on the backside of
cushion of the nodes.
Tip: Press the letter P for non-perspective view, if needed.
Press Shift and draw a closed polygon window around the nodes to select. When
finished, release the Shift key.
5.
Display Frame Assembly in the Tree, pick Master surface section, click
Add/Remove a
face and pick one element on each part of the frame facing the cushion. Then select the Expand
option on the lower right corner to pick select all.
6. Select the Expand option on the lower right corner to select all the elements of the seat assembly
facing the seat cushions.
7. Click Yes or Enter on the keyboard to end the selection.
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Figure 89:
8. For the Title of the contact, enter seat cushion fixation.
9. Click Save.
10.
Click
at the top of the interface panel, to check the interface.
Figure 90:
The created interface should be displayed with green text. Otherwise, the interface has to be
modified.
11. Click Close.
12. Click Export to save the model.
Position the Dummy
1. Click Safety > Dummy Positioner.
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Figure 91:
2. From the Dummy model list menu, select New dummy.
Figure 92:
A DummyMng panel opens.
3. Select the File subpanel.
4. Select the file H350R12BD00.
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Figure 93:
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The dummy model is displayed in the small graphic window.
5. Click Validate.
6. Set Set all to value to 400000.
7. Click the Set all to button to offset the numbering of all entities.
8. Click OK to merge the Dummy model.
9. Click Import in the dummy positioning window and select the file H350R12B_Position.M00 and
click OK.
H350R12B_Position.M00 contains all parameters for the automatic dummy positioning.
Figure 94:
10. Close the Dummy positioner and click Export to save the model.
Add the Seatbelt
1. Click Safety > Belt Generator.
2. Enter the name Upper belt and click OK to validate.
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Figure 95:
3. Click Seat belt reference points (
4. Click Add nodes by picking (
).
) and select three nodes, as shown in the following image (red
dots).
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Figure 96:
5. Click Yes on the right corner and OK to validate the node selection.
6. Click Add/Remove body parts (
) and select the parts: torso, pelvis, upper legs, and the
seat cushion fabric, as shown in red in the image.
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Figure 97:
7. Click Yes to validate the selection.
8. Set the Gap value to 5.00 mm.
9. Set the Belt geometric width to 40.
10. Set the Element Size to 8.
11. Click Material (
) and select the material file BELT.mat you saved to your working directory
from the radioss.zip file.
12. Click OK.
13. Click Property (
) and select the property file BELT.prop you saved to your working directory
from the radioss.zip file.
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14. Click OK.
15. Click Preview to display the proposed seat belt. Some intersections may exist between the seat
cushion and the seat belt.
16. Use the orientation tools to modify the angle of the Rigid Body 2.
Figure 98:
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Figure 99:
17. Click Save to save the belt definition.
18. Redo the same operations in order to create the lower belt. Select nodes, as shown below:
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Figure 100:
19. Select the parts: pelvis, upper legs and seat cushion fabric.
20. Click Preview > Save > Close.
Figure 101:
21. Click Export to save the model.
Seatbelt vs Dummy
Create Contact Interfaces
During the seatbelt creation, two contact interfaces between the seatbelt and the dummy have been
created. You will need to check and remove any remaining intersections and penetrations.
1. Click LoadCase > Contact Interface.
2. Select interface BELT ID 400038.
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3. Click See selected (
p.82
) to display.
4. Click in Master Surface, right-click in the modeling window, and click
Include picked parts
to select the Fabric backframe and the Backseat frame as they may come into contact with the
shoulder belt during the analysis.
Figure 102:
5. Click Save.
6. Select interfaces BELT ID 400038 and BELT ID 400039.
7. Click See selected (
) to display.
8. Set Coulomb friction to 0.3.
9. Set Friction penalty formulation to 2.
10. Click Save.
11. Select interfaces BELT ID 400038 and BELT ID 400039.
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12. Click Check penetration selected interfaces (
).
13. In the Quality panel, remove the intersections and penetrations using the Depenetrate Auto
(
).
14. Click Close in order to come back to the Contact Interface panel.
15. Click Export to save the model.
Create Seat Structure
Creation of Self-Impact between different parts of the Seat.
1. In the Tree window, select subsets Frame, Floor and Foam.
2. Click the Isolate icon
.
Figure 103:
3. Right-click in the Contact list and select Create New Multi-usage (Type 7).
4. Click Self impact.
5. Set the Title to Self impact seat structure.
6. Set Gap/element option to Variable gap.
7. Set Coulomb friction to 0.2.
8. Set Friction penalty formulation to 2.
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9. Right-click in the Master Surface entry box and click Select in graphics > Add selected parts
of tree (
).
10. Click Save.
11. Select the self impact seat structure interface in the list.
12. Click Check penetration selected interfaces (
). Some penetrations exist between the seat
cushion and the seat structure.
13. Switch to the Tree window, and select the subset named Frame.
14. Switch to the Quality window and click Fixed part (
).
15. Press the Esc key to remove all selected parts.
16. Click Add selected parts of tree (
17. Click Depenetrate Auto (
).
).
Note: Only the nodes of the seat cushion are moved. The seat parts are fixed.
18. Click Close twice.
19. Click Export to save the model.
Create the Interface between Dummy Feet and Floor
Creation of an interface between dummy feet and the floor.
1. Right-click in the Contact list and select Create New > Tied with void (Type 10).
2. Set the dummy feet as slave nodes.
3. Set the floor as master surface.
Figure 104:
4. Set the interface Title to Feet - Floor.
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5. Set Gap for impact activation to 3.0 mm.
6. Click Save > Close.
7. Click Export to save the model.
Modify Seat Cushion Mesh
Modifying the seat cushion mesh to conform to the dummy using the Seat Deformer tool.
Edit the Pre-simulation Settings
To remove the intersection between the dummy and the set, HyperCrash will generate a Radioss
input deck and run a pre-simulation step. The settings for the pre-simulation are defined in the menu
Option > Presimulation Parameters (for Seat Deformer). For this exercise, modify the settings, as
shown below:
Figure 105:
Select the Seat Parts
1. Click the Tree tab and select Foams assembly, Seat plate, Backseat plate, Seat frame, and
Backseat frame, as shown below.
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Figure 106:
2. Click Safety > Seat Deformer > Pre-simulation (new) and click Add selected parts of Tree
(
).
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Figure 107:
Review the Results and Apply the Deformed Shape
1. Once the pre-simulation is completed, review the results in by opening the .h3d file. Create a cut
section in the middle of the dummy and verify that the dummy does not intersect/penetrate the
seat foam.
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Figure 108:
2. If an intersection/penetration does not exist, go back to the window and load the results by
clicking Yes in the dialog.
3. When the job is completed, click Yes to load the results.
You can also load the results by clicking File > Import > h3d node coordinates, then click Yes
to the message Warning: all the nodes coordinates will be replaced by the ones found
in the selected .h3d file.
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Figure 109:
Below is the deformed shape for the seat foam after the pre-simulation.
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Figure 110:
Check Initial Penetration between Seat and Dummy
After the seat deformation, check if any initial penetrations remain between the seat and the dummy.
1. Click LoadCase > Contact Interface to open the Contact Interface tab.
2. Select interface Dummy - Seat.
3. Click Check penetration selected interfaces (
and the dummy.
4. Click Select All (
).
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5. Click Highlight by Vector (
).
Figure 111:
6. Click Fixed part (
).
7. Press the Esc key to remove all selected parts.
8. Click Fixed part (
) and then select the displayed parts of the dummy.
9. Click Depenetrate Auto (
).
Only the nodes of the seat cushion are moved. The parts of the dummy are fixed.
10. Click Close.
11. Click Export to save the model.
Loadcase Setting
Update Initial Velocity
Update the initial velocity defined in the model to include all the nodes in the model.
1. Click LoadCase > Initial Velocity to open the Initial Velocity tab.
2. Select the initial velocity All in the list.
3. Click See selected initial velocity (
).
4. Right-click in the Support entry box and click Select in graphics > Add all nodes (
5. Change [Vx] X Velocity from -10000 to -13000 mm/s.
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Figure 112:
6. Click Save > Close.
7. Click Export to save the model.
Update Imposed Velocity
Update the imposed velocity on the floor to decelerate the car.
1. Click LoadCase > Imposed > Imposed Velocity.
2. Select Imposed velocity in the list.
3. Click See selected imposed velocity (
).
The floor rigid body is displayed on the screen. The imposed velocity is defined on its master
node.
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Figure 113:
4. Right-click the Time Function entry box and select Edit function. Check if the initial value of the
function is the same as the initial velocity.
Figure 114:
5. Click Save > Close.
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6. Click Export to save the model.
Set Boundary Conditions
To simulate the Sled Test, you need to constrain all degrees of freedom on the floor except X-direction.
1. Click LoadCase > Boundary Condition.
2. Select Floor in the list.
3. Click See selected boundary condition (
).
The floor rigid body is displayed on the screen. The boundary condition is defined on its master
node.
4. Verify that the degree of freedom for Ty, Tz, Rx, Ry, and Rz are fixed.
Figure 115:
5. Click Save > Close.
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6. Click Export to save the model.
Set Time History Data
Select Nodes
1. Click Data History > Time History.
2. Select the node group H350MEF2D00_th_nodes.
3. Click See selected th (
). These are the nodes of the dummy rigid bodies.
4. For the first 5 nodes of the group:
a) Select the node in the list.
b) Click See selected node (
).
c) Enter a name in the field Node name, as shown in the table.
d) Click Ok.
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Figure 116:
5. When all labels are defined, click Save > Close.
6. Click Export to save the model.
Select Parts
1. Click Data History > Time History.
2. Select the second and third part group on the list.
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Figure 117:
3. Click Delete selected th (
).
4. Click Yes to the question in the main window.
The selected parts groups are deleted from the model.
5. Select the remaining part group in the list.
6. Click See selected th (
).
7. Click the Tree tab and select the root of the tree.
Figure 118:
8. Switch back to the Data History panel and click Add parts by tree selection.
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Figure 119:
9. Click Save.
10. Click Export to save the model.
Add Interfaces
Add all interfaces to Time History.
1. Click LoadCase > Contact Interface to open the Contact Interface tab.
2. Select all interfaces in the list.
3. Right-click and select Data History > Yes.
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Figure 120:
Clean the Model
1. Go to Quality Module.
2. Select Check All Solver Contact Interfaces.
3. Make sure there are no intersections and initial penetrations; if so, fix them.
4. Click Close.
5. Go to Mesh Editing and clean so that all the unused materials and properties are removed.
Create Control Cards and Export Model
1. Click Model > Control Cards to create the Control Cards in the images below.
Note that the /DT/SHELL/DEL command is used to delete some of the rigid body shells to allow the
dummy’s joints to bend during the simulation.
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Figure 121:
Figure 122:
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Figure 123:
Figure 124:
2. Click File > Export > Radioss.
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Figure 125:
3. Enter a name for the model in the file output window and click OK.
Figure 126:
4. Write relevant information regarding your model in the Header window.
5. Click Save Model.
The model is now ready to be computed.
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RD-T: 3160 Multi-Domain Analysis Setup
The objective of this tutorial is to show how to use the Multi-Domain technique.
The model used is a low speed pole impact on a bumper system. Note that the model is finely meshed
(average mesh size = 2mm) in the region of the pole impact and coarsely meshed (average mesh size
= 10mm) elsewhere.
Figure 127:
In order to run this analysis using Multi-Domain technique, we have to split this model into two
domains, one containing the finely meshed region and the other containing the rest. A node to node link
(/LINK/TYPE4) is then specified at the boundary between the two domains.
These domains will be created using a pre-processor (using HyperCrash in this tutorial) and the options
specific to Multi-Domain analysis will be added to the input decks through a text editor. A Multi-Domain
master input file will also be created using a text editor.
Start HyperCrash
1. Open HyperCrash.
2. Set the User profile to Radioss V14 and the Unit system to kN mm ms.kg.
3. Set User Interface style as New.
4. Set the working directory to <install_directory>/tutorials/hwsolvers/radioss.
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5. Click Run.
6. Click File > Import.
7. In the input window, select monodomain_0000.rad.
8. Click OK.
Create Input Files
1. Click Model > Control Card to set the Control Cards, as shown in the following images:
Figure 128:
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Figure 129:
Figure 130:
2. Click the Tree tab and select the subsets of the fine-meshed region (subsets BB_fine1 (21),
BB_fine2 (24), and fine_mesh (69)), then right-click, then click Export Selection.
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Figure 131:
3. In the Export Selection window, select the option to Add model’s control card not linked to
any part, toggle Export geometry and select ALL POSSIBLE RELATED ENTITIES.
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Figure 132:
4. Click Ok.
5. Save the file as fine_mesh.
This will write the file fine_mesh_0000.rad.
6. Click Model > Control Card and enter the following Control Cards:
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Figure 133:
7. Click the Tree tab and select the subsets/spotwelds of the coarse-meshed region, then rightclick Export Selection.
8. In the Export Selection window, select the option to Add model’s control card not linked to
any part, toggle Export geometry and select ALL POSSIBLE RELATED ENTITIES.
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Figure 134:
9. Click Ok.
10. Save the file as coarse_mesh.
This will write the file coarse_mesh_0000.rad.
Define the Links between Two Domains
In the original single model, the fine meshed region is connected to the coarse meshed region at both
ends. When this model is split into two domains, we have to create a set of nodes in both the domains
and link these node sets through the starter option (/EXTERN/LINK). This option has to be added to the
two Starter input files using a text editor.
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Figure 135:
1. Open the Starter file coarse_mesh_0000.rad and add the option /EXTERN/LINK, as shown below:
Figure 136:
Two external links through node sets 1001 and 1002 have been added to this domain. These node
sets were already defined in monodomain_0000.rad and exported to the two domains in Step 1.
2. Open the Starter file fine_mesh_0000.rad and add the same options.
3. Create a RAD2RAD input file input.dat defining the two domains and specifying the connections
between them.
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Figure 137:
The input files are now ready to be run using the Multi-Domain technique.
Expected Results
Figure 138:
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This chapter covers the following:
•
RD-T: 3500 Tensile Test Setup (p. 113)
•
RD-T: 3510 Cantilever Beam with Bolt Pretensioner (p. 124)
•
RD-T: 3520: Pre-processing for Pipes Impact (p. 138)
•
RD-T: 3530 Buckling of a Tube Using Half Tube Mesh (p. 148)
•
RD-T: 3540 Front Impact Bumper Model (p. 164)
•
RD-T: 3550 Simplified Car Front Pole Impact (p. 177)
•
RD-T: 3560 Bottle Drop (p. 190)
•
RD-T: 3580 Boat Ditching (p. 203)
•
RD-T: 3590 Fluid Flow through a Rubber Clapper Valve (p. 226)
•
RD-T: 3595 Three Point Bending with HyperMesh (p. 240)
•
RD-T: 3597 Cell Phone Drop Test (p. 257)
•
RD-T: 3599: Gasket with HyperMesh (p. 273)
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RD-T: 3500 Tensile Test Setup
This tutorial demonstrates how to simulate a uniaxial tensile test using a quarter size mesh with
symmetric boundary conditions.
The model is reduced to one-quarter of the total mesh with symmetric boundary conditions to simulate
the presence of the rest of the part.
Figure 139:
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time Rootname_0000.rad[0 - 10.]
• Boundary Conditions:
◦
The 3 upper right nodes (TX, RY, and RZ)
◦
The center node on left is totally fixed (TX, TY, Rx, RY, and RZ)
◦
A symmetry boundary condition on all bottom nodes (TY, Rx, and RZ)
• At the left side is applied a constant velocity = 1 mm/ms on -X direction.
• Tensile test object dimensions = 11 x 100 with a uniform thickness = 1.7 mm
Johnson-Cook elastic plastic material /MAT/PLAS_JOHNS (Aluminum 6063
T7)[Rho_I] Initial density = 2.7e
-6
Kg/mm
3
[E] Young's modulus = 60.4 GPa
[nu] Poisson's ratio = 0.33
[a] Yield Stress = 0.09026 GPa
[b] Hardening Parameter = 0.22313 GPa
[n] Hardening Exponent = 0.374618
[SIG_max] Maximum Stress = 0.175 GPa
[EPS_max] Failure Plastic Strain = 0.75
Input file for this tutorial: TENSILE_000.rad
Import the Model
1. Click File > Import > Solver Deck or click
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2.
Click the Select File icon
to open the TENSILE_0000.rad file you saved to your working
directory from the radioss.zip file.
3. Click Open.
4. Click Import.
5. Click Close to close the window.
Create the Material
1. In the Model Browser, right-click and select Create > Material.
A Material with name material1 of card image M1_Elastic appears in the Entity Editor in the
bottom pane of the Model Browser.
2. In the Entity Editor, for Name, enter Mat_1 in the Value field.
3. Set Card Image to M2_PLAS_JOHNS_ZERIL.
4. Click Yes on the pop-up that warns of a card image change.
5. Input the values, as shown in the following image in the Entity Editor.
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Figure 140:
Create the Property
1. In the Model Browser, right-click and select Create > Property.
A Property with name property1 of card image P1_SHELL appears in the Entity Editor in the
bottom pane of the Model Browser.
2. For Name, enter sheet_1.7.
3. For Thick, enter 1.7. in the Value field corresponding to sheet thickness.
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Figure 141:
Assign the Material and Property
1. In the Model Browser, select the SHELL_1 component.
The Entity Editor opens for the component.
2. For Name, enter Tensile_coupon.
3. Click Prop_Id to activate the option.
4. Click Unspecified > Property.
5. In the Select Property dialog, select sheet_1.7 from the list and click OK.
6. Repeat steps 3 - 5 for Mat_Id and select Mat_1.
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Figure 142:
Create the Boundary Conditions
1. Start the BCs Manager by clicking Tools > BCs Manager.
2. For Name, enter constraint1, set Select type to Boundary Condition and set GRNOD to
Nodes.
Figure 143:
3. Click on Nodes.
A nodes selection appears.
4. Select the three nodes as shown in the figure below and click proceed.
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Figure 144:
5. Fix degrees of freedom Tx, Ry and Rz.
6. Click Create to create the constraint.
The created constraint appears in the table, and handles appear in the modeling window.
7. For Name, enter constraint2, set Select type to Boundary Condition and set GRNOD to
Nodes.
8. Click on Nodes.
A nodes selection appears.
9. Select the node as shown in the image below.
Figure 145:
10. Fix degrees of freedom Tx, Ty, Rx, Ry and Rz.
Figure 146:
11. Click Create to create the constraint.
The created constraint appears in the table, and a handle appears in the modeling window.
12. For Name, enter constraint3, set Select type to Boundary Condition and set GRNOD to
Nodes.
13. Select the nodes, as shown in the image below.
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Figure 147:
14. Fix degrees of freedom Ty, Rx and Rz.
15. Click Create to create the constraint.
The created constraint appears in the table, also handles appear in modeling window.
Create the Imposed Velocity
1. For Name, enter velocity, set Select type as Imposed Velocity and set GRNOD to Nodes.
2. Select the nodes, as shown in the image below.
Figure 148:
3. Set the direction as X and Scale Y as -1.0.
4. Click Create/Select curve ID for Curve ID.
An XY curve editor appears.
5. Click New to create a new curve.
6. For Name, enter Load and click proceed.
7. Enter the values, as shown in table below.
Figure 149:
8. Click Update to update the curve with the new values.
9. Click Close to close the Curve editor.
The created curve is assigned to this constraint.
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10. Click Create to create the velocity boundary condition.
11. Click Close to close the BCs Manager.
Create Output Requests
For this exercise the output request will be generated from the Engine file assistant.
1. To start the Engine file assistant, select Tools > Engine File Assistant.
2. Input the values, as shown below:
Figure 150:
The tool generates typical output requests, such as stress, strain, velocity, etc.
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Figure 151:
Export the Model
1. From the File menu, click Export > Solver Deck or click the Export Solver Deck icon
2. For File, click the folder icon
.
and navigate to the destination directory where you want to
export to.
3. Enter the name TENSILE_0000.rad and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export the Engine and Starter file as one file.
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Figure 152:
6. Click Export and then click Close.
7. Open Radioss Manager from Start menu.
8. Select the TENSILE_0000.rad for the Input file.
9. Click Run.
Figure 153:
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10. Run the model TENSILE_0000.rad using Radioss Manager.
p.123
11. Review the listing files for this run and verify the results. See if there is any warning or errors on
the .out files.
12. Using HyperView, plot the displacement and strain contour.
Expected Results
Figure 154: Total Displacement Contour (mm)
Figure 155: Plastic Strain Contour
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RD-T: 3510 Cantilever Beam with Bolt Pretensioner
This tutorial demonstrates how to simulate a simple cantilever problem with a concentrated load at the
free end, using Dynamic Relaxation (/DYREL) method to obtain a static solution.
Figure 156:
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time:
◦
CANTILEVER_0000.rad [0 - 25.1 ms]
• Steps to setup this model:
◦
Fix the Cantilever Beam to the support with a 10 kN pre-tension. The bolt attains 10 kN in 10
ms and remains constant thereafter.
◦
After pre-tension, a concentrated load of 0.2 kN is gradually applied at the free end of the
beam from 10 ms to 25 ms and it remains constant thereafter.
• Material used:
Elasto-plastic material /MAT/LAW2.
-6
[Rho_I] Initial density = 7.83e
Kg/mm
3
[E] Young's modulus = 205 GPa
[nu] Poisson's ratio = 0.29
[a] Yield Stress = 0.792 GPa
[b] Hardening Parameter = 0.510 GPa
[n] Hardening Exponent = 0.26
[SIG_max] Maximum Stress = 0.95 GPa
[c] Strain rate coefficient = 0.014 GPa
[EPS_0] Reference strain rate = 1
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Input file for this tutorial: CANTILEVER_0000.rad
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Import the Model
1. Click File > Import > Solver Deck or click
2.
.
Click the Select File icon
to open the CANTILEVER_0000.rad file you saved to your working
directory from the radioss.zip file.
3. Click Open.
4. Click Import.
5. Click Close to close the window.
Create a Rigid Body
1. In the Model Browser, right-click and select Create > Component.
A component is created and is shown in the Entity Editor, below the Model Browser.
2. Using the Entity Editor, change the Name to Rigids.
3. Set the Card Image as None.
4. In the Model Browser, hide the component 1.
5. Click the Mask icon
in the toolbar.
6. In the modeling window, select one element from the bolt.
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Figure 157:
7. Click on elems > by attached to select the whole bolt.
8. Click mask to hide them and click return.
9. From the 1D page, select the rigids panel.
10. Click the selector arrow nodes 2-n and change it to multiple nodes.
11. In the rigids panel, for primary node, select the node at the end of spring, as shown in Figure 158,
and for nodes 2-n, select the nodes, as shown in Figure 159.
Note: Be sure to set the selector to multiple nodes.
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Figure 158:
Figure 159:
12. With all the DOF's checked, click create to create the rigid body.
13. Click the Mask icon
in the toolbar and click reverse to show remaining elements of the bolt.
14. Click return to exit the panel.
15. In the Model Browser, right-click the 3 components and click Show to display onscreen, as shown
below.
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16. Use Steps 10 through 12 to create a rigid body with the nodes shown in the following image with
the other ends of the springs as the primary node and the nodes on the bolts as slave nodes.
Figure 160:
Create and Assign the Material and Property to Plate and
Support Bolts
1. In the Model Browser, click the component 1.
The component appears in the Entity Editor.
2. Change the name of the component to Plate.
3. Set Card Image to Part.
4. In the Model Browser, right-click and select Create > Material.
5. For Name, enter Steel and set the Card Image to M2_PLAS_JOHNS_ZERIL and click Yes to
confirm.
6. Enter the values, as shown below.
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Figure 161:
7. In the Model Browser, right-click and select Create > Property.
8. For Name, enter Plate, and set the Card Image to P14_SOLID and click Yes to confirm.
9. In the Model Browser, click the component 2.
The component appears in the Entity Editor.
10. For Name, enter Bolt_Support.
11. Set the Card Image to Part.
12. For Prop_Id, click Unspecified > Property and select the property, Plate and click OK.
13. For Mat_Id, click Unspecified > Material and select the material, Steel and click OK.
Create and Update Pre-tensioner Spring Properties
1. In the Model Browser, click the component 3.
The component appears in the Entity Editor.
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2. For Name, enter Spring.
3. Set the Card Image to Part.
4. In the Model Browser, right-click and select Create > Property.
A new property is created and a dialog opens with the new property.
5. Change the Name to Spring.
6. Set the Card Image to P32_SPR_PRE and click Yes to confirm.
7. Fill in the other values, as shown below:
Figure 162:
8. In the Model Browser, click on the property Spring to open the Entity Editor.
9. Right-click on IFUN2 and select Create to create and attach a curve.
A Create Curve dialog opens.
10. Change the Name of the curve to Stiffness.
11. Click Close to exit the dialog.
12. In the Model Browser, select the curve Stiffness, right-click and select Edit from context menu.
The XY curve editor appears.
13. Fill in the values, as shown below.
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Figure 163:
14. Click Update and then click Close.
The created curve is assigned to the property.
Define Boundary Conditions
1. From the Tools menu, start the BCs Manager.
2. For Name, enter FIXED, set Select type to Boundary Condition and set GRNOD to Nodes.
Figure 164:
3. Click on the nodes.
The nodes selection appears.
4. Choose the by window option and select the bottom layer of the bolt support, as shown below.
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Figure 165:
The selection should appear as shown below in the XY Plane view:
5. Fix all translational degrees of freedom.
Figure 166:
6. Click Create to create the constraint.
The created constraint appears in the table and a handle appears in modeling window.
Define the Load (CLOAD)
1. For Name, enter LOAD, set Select type to Concentrated Load and set GRNOD to Nodes.
2. Using the by window option, select the nodes on the edge of the beam, as shown below.
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Figure 167:
3. For Direction, select Y.
4. Set Scale Y, to -1.0 to apply load in negative Y direction.
5. Click the Create/Select curve tab.
A GUI to enter the curve appears.
6. Create a curve with the Name as LOAD and enter the values, as shown below using the same
procedure explained in Step 5.
x=
{0, 10, 25, 250}
y=
{0, 0, 0.02, 0.02}
7. Click Update and Close in the XY curve editor GUI.
The created curve is assigned to the BC.
8. Click Create to finish the creation of the load at the selected nodes.
Define Contact Interface between the Plate and Support
Bolt
1. In the Model Browser, right-click and select Create > Contact.
A contact is created and is shown in the Entity Editor, below the Model Browser.
2. Set Name as SELF.
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3. Set Card Image to TYPE7 and click Yes to confirm.
4. Click on Grnod_id (S) in the Entity Editor and set the selector to Components.
5. Pick the components Plate and Support_Bolt using the list selection dialog.
6. Click on Surf_id (M) in the Entity Editor and set the selector to Components.
7. Pick the components Plate and Support_Bolt using the list selection dialog.
8. Set Igap to 0.
9. For FRIC, enter 0.1 and for GAPmin, enter 0.04.
Create Time History
1. In the Model Browser, right-click and select Create > Output Block.
2. From the Analysis page, select the output block panel.
3. In the Entity Editor, set the name to Deflection and select the nodes on the free end of the
cantilever, as shown in the following image:
Figure 168:
4. Set NUM_VARIABLES to 1 and click on the Data:Var icon
A table will open.
5. Enter the variable name DEF.
6. Click edit and enter the variable name DEF.
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Figure 169:
Create Output Request and Control Cards
For this exercise the output request will be generated from the Engine file assistant which is located in
the Utility menu.
1. To start the Engine file assistant, select Tools > Engine File Assistant.
2. Input the values, as shown below:
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Figure 170:
Run the Model Checker
1. Click Tools > Model Checker > RadiossBlock to open the Model Checker tab.
The Model Checker will display a list of perceived errors within the model. For most of these
issues, the Model Checker is equipped to auto-correct many issues, decreasing the possibility of a
solver error.
2. Click the Apply Auto Correction icon
and click the Run icon
to auto-correct issues within
the model.
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter CANTILEVER and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file CANTILEVER_0000.rad.
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3. Click Run.
4. Post-process the results with HyperGraph.
5. Using HyperGraph, open the T01 file and plot the deflection at the free end of the cantilever.
Figure 171:
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RD-T: 3520: Pre-processing for Pipes Impact
In this tutorial you will learn how to set up a Radioss input file in HyperMesh for analyzing the impact
response between two pipes.
For this tutorial it is recommended to complete the introductory tutorial, HM-1000: Getting Started with
HyperMesh. Working knowledge of the creation and editing of collectors and card images are a definite
pre-requisite. Familiarity with the Interfaces panel, and the creation of boundary conditions are useful,
although not required.
Model Description
The units used in this tutorial are milliseconds, millimeters and kilograms (ms, mm, kg), and the tutorial
is based on Radioss 14.0.
Figure 172: Pipe model
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Import the Model
1. Click File > Import > Solver Deck or click
2.
Click the Select File icon
from the radioss.zip file.
.
to open the pipesd00.rad file you saved to your working directory
3. Click Open.
4. Click Import.
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5. Click Close to close the window.
Note: On import of a Radioss deck, any HyperMesh warning and error messages are written
to a file named radiossblk.msg. This file is created in the folder from which HyperMesh is
started. The content of the file is also displayed in a pop-up window.
On import, any Radioss cards not supported by HyperMesh are written to the control card
unsupp_cards. This card is accessed from the Control Cards panel on the BCs page and is a
pop-up text editor. The unsupported cards are exported with the rest of the model.
Care should be taken if an unsupported card points to an entity in HyperMesh. An
example of this is an unsupported material referenced by a /PART card. HyperMesh stores
unsupported cards as text and does not consider pointers.
On import, HyperMesh renumbers entities having the same ID as other entities.
In HyperMesh, for example, all elements must have a unique ID. The message file
radiossblk.msg provides a list of renumbered elements and their original and new IDs.
Relationship between Cards
A /PART shares attributes such as section properties (/PROP) and a material (/MAT). A group of shells
(/SHELL) sharing common attributes generally share a common part ID (PID).
The figure below shows how these keywords are mapped to HyperMesh entities:
/SHELL
/PART
elem_ID
part_ID
Organized
into
component
collectors
part_ID
prop_ID
mat_ID
Component
collector
with a
component
card image
/PROP
prop_ID
Property
collector
with a
property
card image
/MAT
mat_ID
Material
collector
with a
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material
card image
HyperMesh Entities Map
Component, property and material collectors are created and edited from the Collectors panel.
For the Radioss keyword interface, there is only one component card image and it is named Part. There
are several property card images, such as P1_SHELL, P2_TRUSS, and P14_SOLID. There are many
material card images, such as M1_ELAST and M48_HONEYCOMB.
The complete list of card images is available from the Collectors panel, as you assign card images to the
various types of collectors.
A HyperMesh card image allows you to view the image of keywords and data lines for defined Radioss
entities as interpreted by the loaded template. The keywords and data lines appear in the exported
Radioss input file as you see them in the card images. Additionally, for some card images, you can
define and edit various parameters and data items for the corresponding Radioss.
Use the Entity Editor or card (card editor) panel to review and edit card images . Also, for many
entities, their card image can be viewed and edited from the panels in which they are created.
Create a /MAT Card
In HyperMesh, a /MAT card is associated to a material collector. To relate it to a /PART card, the material
needs to be assigned to a component. You can assign the material to the component collector as you
create the component using the Create subpanel of the Collectors panel or from component create
options in the pull-downs or from the Model Browser using the Entity Editor. In situations where the
material was not assigned to the component at the time of creation (and in this case, a dummy material
is created with the same name as the component collector), update the component collector's definition
by assigning the material in the Update subpanel of the Collectors panel or from the Assign option in
Model Browser or using the Entity Editor of the component.
In this step, create a material with the M1_ELAST card image using the Model Browser. This material
will be assigned to both pipes.
1. In the Model Browser, right-click and select Create > Material.
A material is created and displayed in the Entity Editor below the Model Browser.
2. For Name, enter elast1.
3. Set Card Image to M1_ELAST.
4. In the Entity Editor, enter the following:
Rho_Initial (density)
7.8E-6
E (Young's modulus)
208
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nu (Poisson's ratio)
0.30
Note: If you have difficulties completing any task with the creation, update or editing
of materials in this tutorial, refer to the online help for the materials by clicking Help
from the menu.
Tip: Any material that was mistakenly created with wrong values can be edited using
the card image option.
Figure 173:
In this step, the material created will be used for the analysis. The next step is to define the /PROP
card that will be used to define the properties of the elements in the model.
Create a /PROP Card
In HyperMesh, the /PROP card is assigned to a property.
The model consists of two pipes modeled with shell elements. Create a property with a /PROP/SHELL
card that will be used for all the elements.
1. In the Model Browser, right-click and select Create > Property.
A property is created and displayed in the Entity Editor below the Model Browser.
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2. For Name, enter prop_shell.
3. Set Card Image to P1_SHELL.
4. Set Ishell to 24.
5. For shell thickness Thick, enter 2.5.
Figure 174:
Assign Cards to Elements
Assign the /PART card to the component for the coarse pipe and specify the /PROP/SHELL card ID in it.
1. In the Model Browser, select the components Pipe1 and Pipe2.
A combined Entity Editor appears for both the selected components.
2. Set Card Image to PART.
3. For Prop_Id, click Unspecified > Property, select the property prop shell and click OK.
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4. For Mat_Id, click Unspecified > Material, select the material elast1 and click OK.
Create an Interface Contact Card
A Radioss contact is a HyperMesh group. When you want to manipulate an /INTER card, such as delete
it, renumber it, or turn it off, you need to work with HyperMesh group entities.
In this step, create a contact between the two pipes using /INTER/TYPE7. The pipe with the coarser
mesh (2) will be the master surface while the one with finer mesh (1) will be the slave surface. Radioss
has multiple ways to define master and slave entity types from which to choose; in this example define
the master and slave entities as components, by doing this, the master will be exported as /SURF/PART
and the slave as a /GRNOD/PART.
1. In the Model Browser, right-click and select Create > Contact.
A contact is created and displayed in the Entity Editor below the Model Browser.
2. For Name, enter contact.
3. Set Card Image to TYPE7 and click Yes to confirm.
4. For Surf_id(M) that corresponds to the master selection, click on the drop-down arrow and select
Components.
5. Click Components, select component 2 in the selection or on the modeling window and click OK.
6. For Grnod_id(S) that corresponds to the slave selection, click on the drop-down arrow and select
Components.
7. Click Components, select component 1 in the selection or on the modeling window and click OK.
8. For static coefficient [Fric], enter 0.10.
In this step, you defined the contact between the two pipes as /INTER/TYPE7.
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Figure 175:
Create the Boundary Conditions
In this step, you will apply a translational initial velocity along Z direction to the coarse pipe using BC's
Manager.
1. In the BCs Manager, enter Name as tran_vel and set Select type as Initial Velocity under the
Create header.
2. Click Parts, select component 2 from the GUI, and click proceed.
This creates the entity set of type GRNOD, which is referred to in the /INIVEL card.
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3. In the BC's Manager, enter the initial velocity components as 0, 0 and -30 for Vx, Vy and Vz
fields.
There is an option for creating/referring the initial velocity card to a local coordinate system.
However, if nothing is specified, the global coordinate system is selected by default.
4. Click Create.
Cross check in the Model Browser for your reference that a load collector and an entity set are
created.
This completes the creation of an initial velocity for the pipe in the negative global Z direction.
Create a /BCS to Constrain the Finer Mesh Pipe
In this step, you will fully constrain the end nodes of the bottom pipe by using the Boundary Conditions
Manager.
1. In the BCs Manager, enter Name as SPC and set Select type as Boundary Condition.
2. Specify the node set of type as GRNOD for the BCS card, switch the entity from Parts to Nodes
and select the end nodes of the bottom pipe, which are to be constrained.
3. Under the Boundary condition components subheading (as illustrated below) activate all the
translational and rotational check boxes. Click Create.
A load collector with a BCS card is created and applied the nodes as selected in the above steps. A
corresponding node set is created.
Figure 176:
Create Output Request and Control Cards
For this exercise the output request will be generated from the Engine file assistant which is located in
the Utility menu.
1. To start the Engine file assistant, select Tools > Engine File Assistant.
2. Input the values, as shown below:
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Figure 177:
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter pipe and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file pipe_0000.rad.
3. Click Run.
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4. Post-process the results with HyperGraph.
Expected Results
Figure 178: Deformation and Energy Balance Plot
This concludes this tutorial. You may discard this HyperMesh model or save it for your own reference.
In this tutorial some of the concepts that govern the HyperMesh interface to Radioss are introduced.
You also used numerous panels that allowed you to do basic modeling in terms of Radioss, such as
defining contacts or boundary conditions.
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RD-T: 3530 Buckling of a Tube Using Half Tube
Mesh
This tutorial simulates buckling of a tube using half tube mesh with symmetric boundary conditions.
The figure illustrates the structural model used for this tutorial: a half tube with a rectangular section
(38.1 x 25.4 mm) and length of 203 mm.
Figure 179: Model
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time: Engine [0 - 10 ms]
• The tube thickness is 0.914 mm.
• An imposed velocity of 13.3 mm/ms (~30 MPH) is applied to the right end of the tube
• Elasto plastic material using Johnson-Cook law /MAT/PLAS_JOHNS (STEEL).
[Rho_Initial] Initial density = 7.85e
-6
3
Kg/mm
[E] Young's modulus = 210 GPa
[nu] Poisson coefficient = 0.3
[a] Yield Stress = 0.206 GPa
[b] Hardening Parameter = 0.450 GPa
[n] Hardening Exponent = 0.5
[SIG_max] Maximum Stress = 0.0 GPa
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File needed to complete this exercise: tube_box.hm
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the tube_box.hm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create the Material
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter Steel.
3. Set Card Image to M2_PLAS_JOHNS_ZERIL and click Yes to confirm.
4. Set Type as PLAS_JOHNS.
5. Input the values, as shown below:
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Figure 180:
6. Click anywhere in the Model Browser to exit the Entity Editor.
Create the Property
1. In the Model Browser, right-click and select Create > Property.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter Pshell.
3. Set Card Image to P1_SHELL.
4. Input the values, as shown below:
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Figure 181:
Assign Material and Property
1. Select the component Tube_box in the Model Browser.
2. In the Entity Editor, for Prop_Id, click Unspecified > Property.
3. In the Select Property dialog, select Pshell and click OK.
4. In the Entity Editor, for Mat_Id, click Unspecified > Material.
5. In the Select Material dialog, select Steel and click OK.
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Figure 182:
Create Rigid Body
1. Create a component collector named RBODY. Set Card Image to None in the Entity Editor.
2. In the 1D page, select rigids.
3. Set nodes 2-n to multiple nodes.
4. Set primary node tab to calculate node.
5. Select the nodes of one edge to tie all the degree's of freedom, as shown in the image below:
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Figure 183:
6. Click create.
Create Symmetry Boundary Conditions
1. Click Tools > BCs Manager to start the BCs Manager.
2. For Name, enter Symmetry, set Select type as Boundary Condition and set GRNOD to Nodes.
Figure 184:
3. Click on the nodes.
The nodes selection appears.
4. Click the by window option and select the top layer of the channel as shown below:
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Figure 185:
5. Fix the degrees of freedom for symmetry condition, as shown below:
6. Click Create to create the constraint.
The created constraint appears in the table, and a handle appears in the modeling window.
Create Imposed Velocity
1. For Name, enter Velocity, set Select type as Imposed Velocity and set GRNOD to Nodes.
Figure 186:
2. Select the master node of the RBODY on which the boundary condition needs to be applied.
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Figure 187:
3. Set the Direction as Z.
4. Click Create/Select curve to create imposed velocity loading curve.
A new GUI opens.
5. Click New and enter Load as the name of the curve.
6. Click proceed.
7. Enter the X values as 0, 1000.
8. Enter corresponding Y values as 13.3, 13.3.
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Figure 188:
9. Click the Create tab to create the constraint.
The created constraint appears in the table, and a handle appears in the modeling window.
Create Rigid Body Boundary Condition
1. Enter Name as RBODY_constraint, set Select type as Boundary Condition and set the GRNOD
to Nodes.
2. Select the master node of the RBODY on which the boundary condition need to be applied.
3. Set the degrees of freedom to not allow movement in X and Y direction and no rotation about Yaxis and Z-axis, as shown below.
Figure 189:
4. Click Create to create the constraint.
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The created constraint appears in the table, and a handle appears in the modeling window.
Create a Rigid Wall
1. In the Model Browser, right-click and select Create > Rigid Wall.
2. Set the Geometry Type as Infinite plane.
3. Click on the Base node option and select the extreme node opposite to rigid body edge.
Figure 190:
4. Set the normal vector using the N1, N2, N3 option, as shown below. Ensure that N3 is not active.
Click Proceed.
Figure 191:
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Figure 192:
5. Set d (distance) value to 20.
Figure 193:
6. Click Analysis > rigid walls.
7. Open the Geometry page. Click on the Edit tab besides base node and change the Z value to 10.0
to be away from the channel along the Z-axis.
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8. Click update.
Create a Self Contact
1. In the Model Browser, right-click and select Create > Contact.
The Entity Editor is displayed below the Model Browser.
2. Enter the Name as Self_Interface, set the Card Image as TYPE7 and click Yes to confirm.
3. Toggle the option to Components for Grnod_id (S) (slave entity), select Tube_box and click OK.
4. Toggle the option to Components for Surf_id (M) (master entity), select Tube_box and click OK.
5. Set STFAC = 1, FRIC = 0.20 and GAPmin = 0.90.
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Figure 194:
6. Click anywhere in the Model Browser to exit the Entity Editor.
7. To review the created interface, click Analysis > Interface.
8. Go to the update subpanel, select created interface and click review.
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It will show master and slave surface as blue and red.
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser by clicking View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Box_Tube
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
Tstop
10.01
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-100
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
EPSP
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
HOURG
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
VEL
[Checked]
ENGINE KEYWORDS
ANIM/VECT
FOPT
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
1
ENGINE KEYWORDS
ANIM/NODA
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
ENGINE KEYWORDS
ANIM/NODA
DMAS
[Checked]
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter boxtube and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file boxtube_0000.rad.
3. Click Run.
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4. Post-process the results with .HyperView
Expected Results
Figure 195: Total Displacement (mm) and Plastic Strain (Mid Layer, Simple Average)
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RD-T: 3540 Front Impact Bumper Model
In this tutorial you will learn how to use HyperMesh to set up a Radioss input deck for analysis of the
impact of a bumper against a barrier behind rigid wall.
For this tutorial it is recommended to complete the introductory tutorial HM-1000: Getting Started
with HyperMesh, as well as RD-T: 3520: Pre-processing for Pipes Impact for the basic concepts on the
HyperMesh Radioss interface.
The units used in the model are millisecond, millimeter and kilogram (ms, mm, kg), and the tutorial is
based on Radioss Block 14.0.
The model used consists of a simplified bumper model:
Figure 196: Bumper Model
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the bumper.hm file you saved to your working directory
2. Click Open.
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The model loads into the modeling window.
Define the Vehicle Mass Component
1. In the Model Browser, right-click and select Create > Component.
The Entity Editor opens.
2. For Name, enter Vehicle mass.
3. Set Card Image to None and click Yes to confirm.
4. Click Geometry > Create > Nodes > XYZ to open the Nodes panel.
5. In the X field, enter 700.
6. In the Y field, enter 0.
7. In the Z field, enter 170.
8. Click create to create the node.
9. Go to the 1D page, and click rigids.
10. Click the selector arrow nodes 2-n and select sets.
11. For primary node, select the node created in the steps above.
12. Click sets and select the Constrain Vehicle set.
13. With all the DOFs checked, click create to create the rigid body.
A spider will be drawn connecting the created node to the edge nodes of the structure modeled.
14. Click Card Edit
in the toolbar, set the selector to elements and select the rigid body created.
15. Click edit.
16. Fill the mass and inertia information in the card image, as shown in the table below:
Mass
JXX
JXY
JXZ
JYY
JYZ
JZZ
800
1.5E+07
-5.0E+03
-8.0E+06
5.0E+07
-900
6.0E+07
17. Set ICOG as 4 and set Ispher as 0.
18. Click return to go back to the main menu.
Create a Rectangular Node Group Box
1. Click View > Browsers > HyperMesh > Solver to activate the Solver Browser, if it is not active
on your screen.
2. Right-click in the Solver Browser and select Create > BOX > BOX/RECTA.
The Entity Editor opens.
3. For Name, enter box velocity.
4. Click Color and select a color from the color palette.
5. Enter Corner1 and Corner2 X, Y, and Z coordinates, as shown below.
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Figure 197:
Create the Initial Velocity on Bumper
1. Click Tools > BCs Manager.
2. In the BCs Manager, enter Name as trans_vel.
3. Set the Select type as Initial Velocity under the Create header.
4. Set the entity selector to BOX under GRNOD.
5. Click on it and select box velocity.
6. Enter -10, 0, 0 for Vx, Vy and Vz fields, respectively.
Figure 198:
A set named InitialVelocity_grnodbox is created. You can also create this set before the above step
and then refer to this set in the above step, instead of BOX.
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7. Click Create and then click Close.
Define the Master Contact Surface
1. Right-click in the Solver Browser and select Create > SURF_EXT > PART.
The Entity Editor opens.
2. For Name, enter barrier_surface.
3. For Entity IDs, click on Components.
4. In the Select Components dialog, select barrier and click OK.
Figure 199:
5. Right-click in the Solver Browser and select Create > SURF > PART.
The Entity Editor opens.
6. For Name, enter bumper_surface.
7. For Entity IDs, click on Components.
8. In the Select Components dialog, select bumper, exterior crashbox left, exterior crashbox
right, interior crashbox left, and interior crashbox right and click OK.
Figure 200:
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9. Right-click in the Solver Browser and select Create > SURF > SURF.
The Entity Editor opens.
10. For Name, enter barrier_bumper_surface.
11. For Entity IDs, select Sets.
12. Click on Sets and select barrier_surface and bumper_surface and click OK.
Figure 201:
Create the Self-Impact Contact between Parts of the
Bumper
1. Right-click in the Solver Browser and select Create > INTER > TYPE7.
The Entity Editor opens.
2. For Name, enter impact.
3. For Grnod_id (S) (slave entity), set the selector to Components.
4. Click Components, select bumper, interior crashbox (left and right) and exterior crashbox
(left and right) and click OK.
5. For Surf_id (M) (master entity), set the selector to Set.
6. Click Set, select barrier_bumper_surface and click OK.
7. Set Igap to 2.
8. For the static coefficient Fric, enter 0.15.
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Figure 202:
Create a System Specifying the Location and CrossSection Plane Normal
1. Click the numbering icon
on the toolbar.
2. Click the nodes selector and select by id.
3. For the IDs, enter 6224, 6227, and 5993.
4. Check the display check box on.
5. Click on.
Node numbers appear next to the node for selection in further steps.
6. From the Analysis page, click systems.
7. Go to the create by node reference page.
8. Select Node ID 6224 for origin node.
9. Select Node ID 6227 for z- axis.
10. Select Node ID 5993 for yz plane.
11. Click create to create a system.
12. Click the Card Edit icon
on the toolbar.
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13. Set the entity selector to systs.
14. Select the system and click edit.
15. Change the option from Skew to Frame.
16. Click return.
Create a Set of Elements
1. Right-click in the Solver Browser and select Create > GRSHEL > SHEL.
The Entity Editor opens.
2. For Name, enter CrosssectionPlane-elements.
3. For Entity IDs, toggle the Elements selector active, and select two rows of element on either side
of the system, as shown in the figure below.
Figure 203:
Define a Section
1. Right-click in the Solver Browser and select Create > SECT > SECT.
2. For Name, enter Crosssection_Plane.
3. For Frame_ID, select the system defined in the previous step by clicking on the screen.
4. For grshel_ID, select the set CrosssectionPlane-elements defined in the previous step, as
shown below.
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Figure 204:
Define Time History Output
1. Right-click in the Solver Browser and select Create > TH > SECTIO.
2. For Name, enter Section_force.
3. For Entity IDs, toggle Crosssections and select Crosssection_Plane.
4. For NUM_VARIABLES, select 1 and for Data: Var, enter DEF.
This selects the default output for Radioss.
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Figure 205:
Create Slave Nodes to the Rigid Wall
These nodes will be slave to the rigid wall.
1. Right-click in the Solver Browser and select Create > BOX > BOXRECTA.
2. For Name, enter half model.
3. Click Color and select a color from the color palette.
4. Enter the Corner1 and Corner2 X, Y and Z coordinates, as shown below:
Figure 206:
5. Right-click in the Solver Browser and select Create > GRNOD > BOX.
6. For Name, enter RigidwallSlave_grnodbox.
7. For Entity IDs, set the selector to Box and select the above created half model (BOX/RECTA).
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Figure 207:
Define the Rigid Wall
1. Press the F8 key to enter the Create Nodes panel.
2. Select the XYZ (
) subpanel.
3. For x=, y= and z=, enter the values -600, 750 and 90, respectively.
4. Click create.
5. Right-click in the Solver Browser and select Create > RWALL > PLANE.
6. For Name, enter wall.
7. Set Geometry type as Infinite Plane.
8. With the Base node selector active, select the node that was created in step 4.
9. Set Normal to 1,0,0.
10. For grnod_id1 (S), toggle Set and select RigidWallSlave_grnodbox (GRNOD/BOX).
11. For fric, specify 1.0 for the friction coefficient.
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Figure 208:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
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Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Bumper_Impact
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
Tstop
20
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
ON
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
TFILE
Status
[Checked]
ENGINE KEYWORDS
TFILE
Time Frequency
0.1
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
EPSP
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/BRICK/TENS
Status
[Checked]
ENGINE KEYWORDS
ANIM/BRICK/TENS
STRESS
[Checked]
ENGINE KEYWORDS
ANIM/BRICK/TENS
STRAIN
[Checked]
ENGINE KEYWORDS
ANIM/SHELL/TENS/
STRESS
Status
[Checked]
ENGINE KEYWORDS
ANIM/SHELL/TENS/
STRESS
MEMB
[Checked]
ENGINE KEYWORDS
ANIM/SHELL/TENS/
STRAIN
Status
[Checked]
ENGINE KEYWORDS
ANIM/SHELL/TENS/
STRAIN
MEMB
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
DISP
[Checked]
ENGINE KEYWORDS
ANIM/VECT
VEL
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
1
ENGINE KEYWORDS
DT/NODA
Status
[Checked]
ENGINE KEYWORDS
DT/NODA
CST 0 - Tmin
3.6e-4
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter bumper_impact and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file bumper_impact_0000.rad.
3. Click Run.
Review the Results
The exercise is complete. Save your work to a HyperMesh file.
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RD-T: 3550 Simplified Car Front Pole Impact
This tutorial demonstrates how to simulate frontal pole test with a simplified full car.
Figure 209:
Model Description
• UNITS: Length (mm), Time (s), Mass (ton), Force (N) and Stress (MPa)
• Simulation time: Engine file (_0001.rad) [0 - 0.0601 ms]
• An initial velocity of 15600 mm/s is applied on the car model to impact a rigid pole of radius 250
mm.
• Elasto-plastic Material /MAT/LAW2 (Windshield)
-9
[Rho_I] Initial Density = 2.5x10
3
ton/mm
[E] Young's Modulus = 76000 MPa
[nu] Poisson's Ratio = 0.3
[a] Yield Stress = 192 MPa
[b] Hardening Parameter = 200 MPa
[n] Hardening Exponent = 0.32
• Elasto-plastic Material /MAT/LAW2 (Rubber)
[Rho_I] Initial Density = 2x10
-9
[E] Young's Modulus = 200 MPa
[nu] Poisson's Ratio = 0.49
[a] Yield Stress = 1e
30
3
ton/mm
MPa
[n] Hardening Exponent = 1
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• Elasto-plastic Material /MAT/LAW2 (Steel)
-9
[Rho_I] Initial Density = 7.9x10
3
ton/mm
[E] Young's Modulus = 210000 MPa
[nu] Poisson's Ratio = 0.3
[a] Yield Stress = 200 MPa
[b] Hardening Parameter = 450 MPa
[n] Hardening Exponent = 0.5
[SIG_max] Maximum Stress = 425 MPa
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the fullcar.hm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create and Assign the Material for Windshield
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter windshield.
3. Set Card Image as M2_PLAS_JOHNS_ZERIL and click Yes to confirm.
4. Input the values, as shown below:
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Figure 210:
5. In the Model Browser, select components COMP-PSHELL_3 and COMP-PSHELL_16.
6. Click Mat_Id in the Entity Editor, select the material windshield and click OK to update the
selected components with the created material.
Create and Assign the Material for Rubber
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter rubber.
3. Set Card Image to M2_PLAS_JOHNS_ZERIL and click Yes to confirm.
4. Input the values, as shown below:
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Figure 211:
5. In the Model Browser, select components COMP-PSHELL_20 through COMP-PSHELL_23.
6. For Mat_Id, select the material rubber and click OK to update the selected components with the
created material.
Create and Assign the STEEL Material
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter steel.
3. Set Card Image to M2_PLAS_JOHNS_ZERIL.
4. Input the values, as shown below:
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Figure 212:
5. In the Model Browser, select all components labeled with COMP-PSHELL and COMP-PROD,
except COMP-PSHELL_3, COMP-PSHELL_16 and COMP-PSHELL_20 to COMP-PSHELL_23.
6. For Mat_Id, select the material steel and click OK to assign the material to the selected
components.
Create an Infinite Plane Rigid Wall
1. In the Model Browser, right-click and select Create > Rigid Wall.
The Entity Editor is displayed.
2. For Name, enter ground.
3. Set Geometry type as Infinite plane.
4. Click Base node and select any node from the model.
5. Define the normal vector Z = -1.
6. Set distance d = 300.
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Figure 213:
7. Go to the Analysis > rigid walls panel.
8. Move to the geom page.
9. Click name and select Ground from the list.
10. Click the edit tab besides base node and change values of the coordinates as indicated below.
X = -2300, Y = 1200, and Z = -1
11. Click update and then click return.
Create a Cylindrical Rigid Wall
1. In the Model Browser, right-click and select Create > Rigid Wall.
The Entity Editor is displayed.
2. For Name, enter pole.
3. Set the Geometry type as Cylinder.
4. Click Base node and select any node' from the model.
5. Define the normal vector Z= 1.
6. For Radius node, do not select anything. Leave it as <Unspecified>.
7. Set distance d= 1500.
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Figure 214:
8. Go to Analysis > Rigid Walls panel.
9. Move to the geom page.
10. Click name and select Pole from the list.
11. Click the edit tab besides base node and change values of the coordinates as indicated below.
X = -320, Y = 1250, and Z = 0
12. Set Radius = 250.
13. Click update and then click return.
Define the Self Contact (TYPE7)
1. Hide all the 1D (TRUSSES) and 3D (SOLID) parts in the model by opening the Solver Browser and
clicking PROP > SHELL, Isolate only.
2. Return to the Model Browser and select Create > Contact.
The Entity Editor will display.
3. For Name, enter CAR_CAR.
4. Set Card Image to TYPE7 and click Yes to confirm.
5. For Surf_id (M) (master entity), set the option to Components, select displayed components,
and click OK.
6. Input other parameters, as shown below.
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Figure 215:
Define the Contact between the Engine and Radiator
(TYPE7)
1. In the Solver Browser, right-click and select Create > SURF_EXT > PART.
2. For Name, enter engine.
3. Click on Components and select COMP-PSOLID_24.
4. In the Model Browser, right-click and select Create > Contact.
5. For Name, enter ENGINE_RADIATOR, set the Card Image as TYPE7, and click Yes to confirm.
6. For Grnod_id (S) (slave entity), set the selector switch to Components, click Components, and
select COMP-PSOLID_26.
7. For Surf_id (M) (master entity), set the selector switch to Set, click Set, and select engine.
8. Input the values, as shown below:
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Figure 216:
Define the Initial Velocity
1. Click Tools > BCs Manager to start the BCS Manager.
2. For Name, enter 35MPH, set Select type as Initial Velocity and set GRNOD to Parts.
3. Click comps and select all of the parts in the model.
4. Set Vx as 15600.
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Figure 217:
5. Click Create to create the boundary condition.
The boundary condition appears in the table.
6. Click Close.
Create Time History Nodes
1. In the Model Browser, isolate COMP-PSHELL_19.
2. Click Tools > Create > Cards > TH > NODE.
3. For Name, enter RAIL and select the nodes on the Rail, as shown below.
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Figure 218:
4. For NUM_VARIABLES, select 1 and for Data: Var, enter the following:
Figure 219:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
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2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Car_Analysis
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
Run Number
1
ENGINE KEYWORDS
RUN
Tstop
0.0601
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
TFILE
Status
[Checked]
ENGINE KEYWORDS
TFILE
Time Frequency
9e-5
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
EPSP
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
HOURG
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
VEL
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/VECT
FOPT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
0.003
Export the Model
1. Click File > Export or click the Export icon
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2. Click the folder icon
p.189
and navigate to the destination directory where you want to export to.
3. For Name, enter FULLCAR and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file FULLCAR_0000.rad.
3. Click Run.
Review the Results
The exercise is complete. Save your work to a HyperMesh file. You can view the results in HyperView.
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RD-T: 3560 Bottle Drop
This tutorial demonstrates how to simulate a Bottle Drop Test containing water and air. The objective is
to evaluate the diffusivity of water and air in the bottle on drop.
Figure 220:
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
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3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the bottle.hm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create the Materials for Air and Water
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter Air.
3. For Card Image, select M37_BIPHAS and click Yes to confirm.
4. Input the values as shown below. Remember to select ALE under ALE CFD Formulation.
Figure 221:
5. Similarly create a material with the name Water using steps 1 - 4.
6. Input the values, as shown below.
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Figure 222:
Load the Stress-Strain Curve
To create the material for bottle (plastic) you need a stress strain curve that is available in a file from
test.
1. Click XYPlots > Create > Plots.
2. Enter the plot= name as stress-strain and click create plot and then click return.
3. Click XYPlots > Edit > Curves.
4. Toggle the create radio button.
5. Click load to load the stressstrain_curve.txt file.
6. With the x radio button selected, click the green + to the right of comp= and set it to x.
7. Select the y radio button, click the green + to the right of comp= and set it to y.
8. Click create and then click return.
Figure 223:
9. In the Model Browser, click on curve.
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10. In the Entity Editor, rename it as stress_strain.
The data in the file is loaded as a curve in HyperMesh.
Create the Material for Bottle
1. In the Model Browser, right-click and select Create > Material.
The Entity Editor is displayed below the Model Browser.
2. For Name, enter Bottle.
3. For Card Image, select M36_PLAS_TAB and click Yes to confirm.
4. Input the values as shown below:
Figure 224:
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5. Select the stress-strain curve created for fct_ID1.
Create and Assign the Property for Air
1. In the Model Browser, right-click and select Create > Property.
2. For Name, enter Air.
3. For Card Image, select P14_SOLID and click Yes to confirm.
4. Enter parameters, as shown below.
Figure 225:
5. In the Model Browser, click on the air component.
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6. Select material and property created for Air in the Entity Editor.
Create and Assign the Property for Water
1. In the Model Browser, right-click and select Create > Property.
2. For Name, enter Water.
3. For Card Image, select P14_SOLID and click Yes to confirm.
4. Enter parameters, as shown below.
Figure 226:
5. In the Model Browser, click on the water component.
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6. Select material and property created for Water in the Entity Editor.
Create and Assign the Property for Bottle
1. In the Model Browser, right-click and select Create > Property.
2. For Name, enter Bottle.
3. For Card Image, select P1_SHELL.
4. Enter parameters, as shown below.
N=5
Thick = 0.3
5. In the Model Browser, click on the bottle component.
6. Select material and property created for Bottle in the Entity Editor.
Define an Interface between Bottle and Water
1. In the Model Browser, right-click and select Create > Set.
2. For Name, enter ALE_Surf.
3. Set Card Image to SURF_EXT and click Yes to confirm.
4. For Entity IDs, set the entity selector to Components.
5. Click Components and select water and air.
6. Click OK to complete the selection.
Figure 227:
7. In the Model Browser, right-click and select Create Contact.
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8. For Name, enter Bottle_Water, and for Card Image, select TYPE1.
9. For ls2(S)(slave entity), set the selector to Set.
10. In the Select Set dialog, select ALE_surf and click OK.
11. For ls1(M)(master entity), set the selector to Components.
12. In the Select Components dialog, select Bottle and click OK.
Figure 228:
Create the Initial Velocity for Bottle
1. Click Tools > BCs Manager.
2. Set the Select type to Initial Velocity.
3. For Name, enter Bottle.
4. Click Parts and bottle.
5. Set the Vz velocity to -5468.200 (Negative direction indicating opposite to Global Z-axis).
6. Click Create to create the imposed velocity boundary condition.
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Figure 229:
Create the Initial Velocity for Water and Air
1. Set the Select type to Initial Velocity.
2. For Name, enter Liquid.
3. Click Parts and select water and air.
4. Set the Vz velocity to -5468.200 (Negative direction indicating opposite to Global Z-axis).
5. Click Create to create the imposed velocity boundary condition.
6. Select the Liquid initial velocity in the table, right-click and select Card Edit.
7. Change the Type to T+G and click return to complete the definition.
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Figure 230:
Create the Rigid Wall
1. In the modeling window, press F8, and create the node at the coordinates: X=0, Y=0, Z=-50.
2. In the Model Browser, right-click and select Create > Rigid Wall.
3. For Name, enter GROUND with Geometry type as Infinite plane.
4. Select the node created in Step 1 as base node and make sure the normal vector is in the zdirection, as shown below.
5. Set d to 250.0.
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Figure 231:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
bottle_drop
CONTROL CARDS
Memory
Status
[Checked]
CONTROL CARDS
SPMD
NMOTS
40000
CONTROL CARDS
IOFLAG
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked -]
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
Tstop
1.5e-2
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
OFF
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
TFILE
Status
[Checked]
ENGINE KEYWORDS
TFILE
Time Frequency
0.0015
ENGINE KEYWORDS
ANIM > ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM > ANIM/DT
Tfreq
1.5E-3
ENGINE KEYWORDS
DT > DT
Status
[Checked]
ENGINE KEYWORDS
DT > DT
Tscale
0.5
ENGINE KEYWORDS
DT > DT
Tmin
0.0
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter bottle and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
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6. Click Export to export the file.
Review the Results
The exercise is complete. Save your work to a HyperMesh file.
Figure 232:
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RD-T: 3580 Boat Ditching
The objective of this tutorial is to simulate Boat Ditching with and without Boundary Elements.
Boat Ditching with Boundary Elements
The objective of this tutorial is to simulate Boat Ditching with Boundary Elements to represent
continuous water using bi-phase material law (LAW37).
In this model, the top chamber is air, lower chamber is water surrounded by boundary elements. LAW37
is used for air, water and boundary. Boundary conditions are applied on each surface of boundary in the
normal direction. An interface between fluid and boat (CEL) is defined to manage the contact.
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
to open the boat_ditching_1.hm file you saved to your working
directory from the radioss.zip file.
2. Click Open.
The model loads into the modeling window.
Create and Assign a Material and Property to Air
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter air.
3. For Card Image, select M37_BIPHAS.
4. Input the values, as shown below.
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Figure 233:
Note: Remember to select ALE under ALE CFD Formulation.
5. Create a new property named Air with a Card Image of P14_SOLID by right-clicking in the
Model Browser.
6. Click on the component Air and assign Air as the Prop_Id and air as the Mat_Id in the Entity
Editor.
Create and Assign a Material and Property to Water
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter water.
3. For Card Image, select M37_BIPHAS.
4. Input the values, as shown below.
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Figure 234:
Note: Remember to select ALE under ALE CFD Formulation.
5. In the Model Browser, create a new property named Water with a Card Image of P14_SOLID.
6. Click on the component Water and assign Water as the Prop_Id and water as the Mat_Id in the
Entity Editor.
Create and Assign a Material and Property to Boat
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter boat.
3. For Card Image, select M1_ELAST.
4. Input the values, as shown below:
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Figure 235:
5. In the Model Browser, create a new property named Boat with a Card Image of P1_SHELL and
assign the new property with the values shown below:
Figure 236:
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6. Click on the component Boat and assign Boat as the Prop_Id and boat as the Mat_Id in the
Entity Editor.
Create and Assign a Material and Property to Air-BC
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter air-bc.
3. For Card Image, select M37_BIPHAS.
4. Input the values, as shown below.
Figure 237:
Note: Remember to select ALE under ALE CFD Formulation.
5. Click on the component Air-BC and assign Air as the Prop_Id and air-bc as the Mat_Id in the
Entity Editor.
Create and Assign a Material and Property to Water-BC
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter water-bc.
3. For Card Image, select M37_BIPHAS.
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4. Input the values, as shown below.
Figure 238:
Note: Remember to select ALE under ALE CFD Formulation.
5. Click on the component Water-BC and assign Water as the Prop_Id and water-bc as the Mat_Id
in the Entity Editor.
Define an Interface between Boat and Water
1. Click Tools > Create > Cards > ALE-CFD-SPH > INTER_TYPE18.
The new interface shows up in the Entity Editor.
2. For Name, enter Boat-Fluid.
3. Enter the parameter values, as shown below for Stfval and GAP.
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Figure 239:
4. Set the Surf_id (M) for master selection to Components and select the boat component.
5. Set the Grnod_id (S) for slave selection to Components and select all the components, except
boat.
Create an RBODY for the Boat and Assigning Mass
1. Isolate the boat part using the Model Browser.
2. From the pull-down menu, select Tools > Rbody Manager.
3. For Title, enter RIGID-BOAT, verify that Master node is set to Calculate Node, set Slave node(s)
to Parts, and select the Boat.
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Figure 240:
4. Click Create to create the RBODY.
The created RBODY appears in the table.
5. Select the created RBODY in the table and right-click and select Edit card
to open the Card
Image panel.
6. Assign a mass of 23.04 kg to the boat.
7. Click return to return from the Card Image panel.
8. Click Close to close the RBODY Manager.
Create an Initial Velocity
1. Click Tools > BCs Manager.
2. For Name, enter Boat.
3. For Select type, select Initial Velocity.
4. Set GRNOD to Nodes.
5. Click the Node tab and select the master node of the RBODY created in the previous step.
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6. Set Z velocity (VZ) to -11.0 indicating velocity opposite to global Z-axis.
7. Click Create to create the initial velocity boundary condition.
Figure 241:
Create the Boundary Conditions
1. In the Model Browser, right-click on the Components sub-folder and select Show to display all
components.
2. Enter a new boundary condition in the BCs Manager named Constraint-x.
3. For Select type, select Boundary condition.
4. Set GRNOD to Nodes.
5. Click the Node selector and select a node on both faces normal to x-axis.
6. Click the nodes selector and select By face.
HyperMesh will automatically select nodes on the face, as shown in the figures.
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Figure 242:
Figure 243:
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7. Check Tx to constraint translation in X direction.
8. Click Create to create the constraint.
9. Follow the same procedure to create a constraint in Y direction on the sides parallel to Y plane of
global axis.
10. Follow the same procedure to create a constraint in Z direction on the sides parallel to Z plane of
global axis.
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Boat-Ditch-1
CONTROL CARDS
MEMORY
Status
[Checked]
CONTROL CARDS
MEMORY
NMOTS
40000
CONTROL CARDS
SPMD
Status
[Checked]
CONTROL CARDS
IOFLAG
Status
[Checked]
CONTROL CARDS
ANALY
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked]
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
RunName
Boat-Ditch-1
ENGINE KEYWORDS
RUN
Tstop
30.01
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
OFF
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
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Keyword Type
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Keyword
Parameter
Parameter Value
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
DENS
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
VEL
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
1.0
ENGINE KEYWORDS
DT > DT
Status
[Checked]
ENGINE KEYWORDS
DT > DT
Tscale
0.5
ENGINE KEYWORDS
DT > DT
Status
0.0
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter boatditching_1 and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file
boatditching_1_0000.rad.
3. Click Run.
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Review the Results
The exercise is complete. Save your work to a HyperMesh file.
Boat Ditching without Boundary Elements
The objective of this tutorial is to simulate Boat Ditching without Boundary Elements. So there is no
boundary to represent continuous water. Basically, you are simulating Boat-Ditching in an enclosed
volume.
In this model, the top chamber is air (including its outer layer) and the lower chamber is water
(including its outer layer). Bi-Phase material LAW37 was used to model air and water. Boundary
conditions are applied on each surface of boundary in the normal direction. An interface between fluid
and boat (CEL) is defined to manage the contact.
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
to open the boat_ditching_2.hm file you saved to your working
directory from the radioss.zip file.
2. Click Open.
The model loads into the modeling window.
Create and Assign a Material and Property to Air
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter air.
3. For Card Image, select M37_BIPHAS.
4. Input the values, as shown below.
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Figure 244:
Note: Remember to select ALE under ALE CFD Formulation.
5. Create a new property named Air with a Card Image of P14_SOLID by right-clicking in the
Model Browser.
6. Click on the component Air and assign Air as the Prop_Id and air as the Mat_Id in the Entity
Editor.
Create and Assign a Material and Property to Water
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter water.
3. For Card Image, select M37_BIPHAS.
4. Input the values, as shown below.
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Figure 245:
Note: Remember to select ALE under ALE CFD Formulation.
5. In the Model Browser, create a new property named Water with a Card Image of P14_SOLID.
6. Click on the component Water and assign Water as the Prop_Id and water as the Mat_Id in the
Entity Editor.
Create and Assign a Material and Property to Boat
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter boat.
3. For Card Image, select M1_ELAST.
4. Input the values, as shown below:
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Figure 246:
5. In the Model Browser, create a new property named Boat with a Card Image of P1_SHELL and
assign the new property with the values shown below:
Figure 247:
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6. Click on the component Boat and assign Boat as the Prop_Id and boat as the Mat_Id in the
Entity Editor.
Define an Interface between Boat and Water
1. Click Tools > Create > Cards > ALE-CFD-SPH > INTER_TYPE18.
The new interface shows up in the Entity Editor.
2. For Name, enter Boat-Fluid.
3. Enter the parameter values, as shown below for Stfval and GAP.
Figure 248:
4. Set the Surf_id (M) for master selection to Components and select the boat component.
5. Set the Grnod_id (S) for slave selection to Components and select all the components, except
boat.
Create an RBODY for the Boat and Assigning Mass
1. Isolate the boat part using the Model Browser.
2. From the pull-down menu, select Tools > Rbody Manager.
3. For Title, enter RIGID-BOAT, verify that Master node is set to Calculate Node, set Slave node(s)
to Parts, and select the Boat.
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Figure 249:
4. Click Create to create the RBODY.
The created RBODY appears in the table.
5. Select the created RBODY in the table and right-click and select Edit card
to open the Card
Image panel.
6. Assign a mass of 23.04 kg to the boat.
7. Click return to return from the Card Image panel.
8. Click Close to close the RBODY Manager.
Create an Initial Velocity
1. Click Tools > BCs Manager.
2. For Name, enter Boat.
3. For Select type, select Initial Velocity.
4. Set GRNOD to Nodes.
5. Click the Node tab and select the master node of the RBODY created in the previous step.
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6. Set Z velocity (VZ) to -11.0 indicating velocity opposite to global Z-axis.
7. Click Create to create the initial velocity boundary condition.
Figure 250:
Create the Boundary Conditions
1. In the Model Browser, right-click on the Components sub-folder and select Show to display all
components.
2. Enter a new boundary condition in the BCs Manager named Constraint-x.
3. For Select type, select Boundary condition.
4. Set GRNOD to Nodes.
5. Click the Node selector and select a node on both faces normal to x-axis.
6. Click the nodes selector and select By face.
HyperMesh will automatically select nodes on the face, as shown in the figures.
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Figure 251:
Figure 252:
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7. Check Tx to constraint translation in X direction.
8. Click Create to create the constraint.
9. Follow the same procedure to create a constraint in Y direction on the sides parallel to Y plane of
global axis.
10. Follow the same procedure to create a constraint in Z direction on the sides parallel to Z plane of
global axis.
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Boat-Ditch-2
CONTROL CARDS
MEMORY
Status
[Checked]
CONTROL CARDS
MEMORY
NMOTS
40000
CONTROL CARDS
SPMD
Status
[Checked]
CONTROL CARDS
IOFLAG
Status
[Checked]
CONTROL CARDS
ANALY
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked]
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
RunName
Boat-Ditch-2
ENGINE KEYWORDS
RUN
Tstop
30.01
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
OFF
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
ANIM > ANIM/ELEM
Status
[Checked]
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Keyword Type
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Keyword
Parameter
Parameter Value
ENGINE KEYWORDS
ANIM > ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/ELEM
DENS
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/VECT
VEL
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM > ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM > ANIM/DT
Tfreq
1.0
ENGINE KEYWORDS
DT > DT
Status
[Checked]
ENGINE KEYWORDS
DT > DT
Tscale
0.5
ENGINE KEYWORDS
DT > DT
Status
0.0
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter boatditching_2 and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file
boatditching_2_0000.rad.
3. Click Run.
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Review the Results
The exercise is complete. Save your work to a HyperMesh file.
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RD-T: 3590 Fluid Flow through a Rubber Clapper
Valve
The objective of this tutorial is to simulate the flow of water through a rubber valve using an inlet option
in multi-phase material law (LAW51).
In this model the top chamber is air, the lower chamber is water, and the bottom row of elements is the
inlet. LAW51 is used for air, water and inlet. Boundary conditions are applied on each surface of fluid in
its normal direction. An interface between fluid and rubber (CEL) is defined to manage the contact.
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the valve.hm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create the Curves for pressure_inlet
1. Launch the Solver browser from View > Browsers > HyperMesh > Solver.
2. In the Solver browser, right-click and select Create > FUNCT.
The Curve editor dialog opens.
3. In the Curve editor, click New.
4. For Name, enter pressure_inlet and click proceed.
5. In the Curve editor, select pressure_inlet from the curve list.
6. Enter the X and Y coordinates, as shown below.
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Figure 253:
7. Click Update.
8. Follow Steps 3 - 7 to create a curve named density, with the values shown below.
Figure 254:
9. Click Close.
Create and Assign the Material and Property to Inlet
1. In the Model Browser, right-click and select Create > Material.
The new material appears in the Model Browser.
2. For Name, enter inlet-water.
3. For Card Image, select MLAW51 and click Yes to confirm.
4. Input the values, as shown below:
Remember to select ALE under ALE CFD Formulation.
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Figure 255:
Figure 256:
5. In the Model Browser, right-click and select Create > Property to create a new property.
6. For Name, enter solids.
7. For Card Image, select P14_SOLID. Keep all the default settings.
8. Click Yes to confirm.
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9. In the Model Browser, click on the inlet component and assign solids as the Prop_Id and inletwater as the Mat_Id.
Create and Assign the Material and Property to Air
1. In the Model Browser, right-click and select Create > Material.
The new material appears in the Entity Editor.
2. For Name, enter air.
3. For Card Image, select MLAW51 and click Yes to confirm.
4. Input the values, as shown below.
Remember to select ALE under ALE CFD Formulation.
Figure 257:
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Figure 258:
5. Click on the air component in the Model Browser and assign solids as the Prop_Id and air as the
Mat_Id.
Define and Assign the Material and Property to Water
1. In the Model Browser, right-click on the material air and click Duplicate.
2. Edit the material parameters and table data with the following changes.
a) Change the Name to water.
b) Set C0(1) to 1.0e-04.
c) Change the value for Alpha(1 ) to 1.0 and Alpha(2) to 0.0.
d) Change Rho_Initial to 1.000e-06.
3. In the Model Browser, right-click on the water component and select Assign. Assign solids as
the Prop_Id and water as the Mat_Id.
Create and Assign the Material and Property to Rubber
1. In the Model Browser, right-click and select Create > Material.
2. For Name, enter rubber.
3. For Card Image, select M1_ELAST.
4. Enter the following properties:
a) Rho_Initial = 1e-6 kg/mm
b) E = 0.7
3
c) Nu = 0.4
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5. In the Model Browser, right-click and select Create > Property.
6. For Name, enter rubber.
7. For Card Image, select P14_SOLID.
8. Set ISOLID to 12.
9. In the Model Browser, right-click on the rubber component and select Assign. Assign rubber as
the Prop_Id and rubber as the Mat_Id.
Create an Interface between Rubber and Water
1. Open the Solver Browser and right-click to select Create > ALE-CFD-SPH > INTER_TYPE18.
2. For Name, enter rubber-fluid, and for Card Image, select TYPE18.
Figure 259:
3. To set the Surf_id (M), change the selector to Components and select the rubber component.
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4. To set the Grnod_id (S), change the selector to Components and select all the components,
except rubber.
Create Boundary Conditions on Solid
1. Click Tools > BCs Manager.
2. For Name, enter constraint-X, set Select type as Boundary Condition, and set the GRNOD to
Nodes.
3. Click Nodes and select a node for each outer face parallel to x-axis.
4. Click Nodes in the panel and select by face.
HyperMesh automatically selects all nodes in the face.
Figure 260:
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Figure 261:
5. Click Create.
6. Repeat Steps 1 to 5 to create boundary conditions on Y and Z faces (see image below for
reference).
7. Check the box Ty in order to constrain the translational DOF in Y-direction, as shown below:
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Figure 262: Boundary Conditions for Y-axis
8. Check the box Tz in order to constrain the translational DOF in Z-direction, as shown below:
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Figure 263: Boundary Conditions for Z-axis
Create Boundary Condition on Rubber
1. For Name, enter Fix-rubber, set Select type to Boundary Condition, and set the GRNOD to
Nodes.
2. Select all the nodes on the edge of the clapper, as shown below.
3. Constrain all the translational degrees of freedom.
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Figure 264:
4. Click Create to create the constraint.
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Figure 265:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
CLAPPER
CONTROL CARDS
MEMORY
Status
[Checked]
CONTROL CARDS
MEMORY
NMOTS
40000
CONTROL CARDS
SPMD
Status
[Checked]
CONTROL CARDS
IOFLAG
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
ANALY
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
GridVel_Gamma
100.00
ALE-CFD-SPH
ALE_CFD_SPH_CARD
GridVel_Cwx
1.00
ALE-CFD-SPH
ALE_CFD_SPH_CARD
GridVel_Cwy
1.00
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
RunName
CLAPPER
ENGINE KEYWORDS
RUN
Tstop
50.100
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
OFF
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
DENS
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
0.5
ENGINE KEYWORDS
DT
Status
[Checked]
ENGINE KEYWORDS
DT
Tscale
0.5
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Keyword Type
ENGINE KEYWORDS
Keyword
DT
Parameter
Tmin
Parameter Value
0.0
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter clapper and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file clapper_0000.rad.
3. Click Run.
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RD-T: 3595 Three Point Bending with HyperMesh
This tutorial demonstrates how to set up 3-point bending model with symmetric boundary conditions in
Y direction.
Figure 266:
Model Description
• UNITS: Length (mm), Time (s), Mass (ton), Force (N) and Stress (MPa)
• Simulation time: in Engine file [0 - 6.601e-002 s]
• Only one half of the model is modeled because it is symmetric.
• The supports are totally fixed. An imposed velocity of 1000 mm/s is applied on the Impactor in the
(-Z) direction
• Model size = 370mm x 46.5mm x 159mm
• Honeycomb Material /MAT/LAW28: HONEYCOMB
[Rho_I] Initial density = 3.0e
-10
ton/mm
3
[E11], [E22] and [E33] Young's modulus (Eij) = 200 MPa
[G11], [G22] and [G33] Shear modulus (Gij) = 150 MPa
• Elasto-Plastic Material /MAT/LAW36: Inner, Outer and Flat
[Rho_I] Initial density = 7.85
-9
ton/mm
3
[E] Young's modulus = 210000 MPa
[nu] Poisson's ratio = 0.29
• Strain Curve:
0
1
2
3
4
5
6
7
8
9
STRAIN 0
0.0120020.0140030.0180030.0220020.0260030.0300060.032
STRESS 325
335.968 343783 349.245 358.649 372.309 383.925 388.109 389.292 389.506
• Elastic Material /MAT/PLAS_JOHNS: Impactor
[Rho_I] Initial density = 8e
-9
ton/mm
3
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[E] Young's modulus = 208000 MPa
[nu] Poisson's ratio = 0.29
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
to open the BENDING_0000.rad file you saved to your working
directory from the radioss.zip file.
2. Click Open.
The model loads into the modeling window.
Create and Assign the Material and Property for HCFOAM
1. In the Model Browser, right-click and select Create > Material.
The new material appears in the Entity Editor.
2. For Name, enter Foam.
3. For Card Image, select M28_HONEYCOMB and click Yes to confirm.
4. Input values, as shown below:
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Figure 267:
5. In the Model Browser, right-click and select Create > Property to create a new property.
6. For Name, enter Foam and set the new property Card Image as P14_SOLID. Leave all the
settings as default, except for ISOLID which should be set to 24.
7. In the Model Browser, right-click on the component HCFoam and select Assign. Assign Foam as
the Prop_Id and Foam as the Mat_Id.
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8. Click Apply.
Create and Assign the Material and Property for Inner
1. In the Model Browser, right-click and select Create > Material.
The new material appears in the Entity Editor.
2. For Name, enter Inner.
3. For Card Image, select M36_PLAS_TAB and click Yes to confirm.
4. Input the values, as shown below:
Figure 268:
5. In the Model Browser, right-click and select Create > Property to create a new property.
6. For Name, enter Inner and set Card Image as P1_SHELL. Leave all the settings as default,
except for Ishell which should be set to 4 and Thick which should be set to 9.119e-01.
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7. In the Model Browser, right-click on the component Inner and select Assign. Assign Inner as the
Prop_Id and Inner as the Mat_Id.
Create and Assign the Material and Property for Outer
1. In the Model Browser, right-click on the material Inner and select Duplicate. Name the new
material Outer.
This creates a new material that is identical to the source material.
2. In the Model Browser, right-click on the property Inner and select Duplicate. Name the new
property Outer.
This creates a new property that is identical to the source property.
3. In the Model Browser, right-click on the component Outer and select Assign. Assign Outer as
the Prop_Id and Outer as the Mat_Id.
Create and Assign the Material and Property for Flat
Follow the procedure described in Create and Assign the Material and Property for Outer with Outer
replaced by Flat.
Create and Assign the Material and Property for Impactor
1. In the Model Browser, right-click and select Create > Material.
The new material shows up in the Entity Editor.
2. For Name, enter Impactor.
3. For Card Image, select M1_ELAST.
4. Input the values, as shown below:
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Figure 269:
5. In the Model Browser, right-click on the property Inner and select Duplicate. Name the new
property Impactor.
This creates a new property that is identical to the source property.
6. In the Model Browser, right-click on the component Impactor and select Assign. Assign
Impactor as the Prop_Id and Impactor as the Mat_Id.
Create and Assign the Material and Property for Support
Follow the same procedures as in Create and Assign the Material and Property for Outer. Create a copy
of Impactor property and material with the name support and assign it to component support.
Create a Rigid Body for Impactor and Support
1. In the Model Browser, right-click and select Create > Component.
2. For Name, enter Impact rigid.
3. Click Color and select a color from the color palette.
4. Set Card Image to None.
5. Go to the 1D page and select the rigids panel.
6. Verify that you are in the create subpanel.
7. For dependent, switch to comps.
8. For primary node, switch to calculate node.
9. Click comps.
10. Select Impactor, then click select.
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11. Click create.
12. Click return to exit the panel.
13. Similarly, create rigid body for Support component in a collector with the name Support rigid
using steps 1 to 12.
Figure 270:
Define the Imposed Velocity and Boundary Condition for
the Impactor
1. From the Utility menu, start the BCs Manager.
2. For Name, enter IMPOSED_VELOCITY, set Select type to Imposed Velocity and set the GRNOD to
Nodes.
3. Click nodes and select the master node of the rigid body of the Impactor, as shown in the
following image.
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Figure 271:
4. Set the Direction as Z.
5. Set Scale Y to -1000.0 as the direction of velocity is opposite to the global Z-axis.
6. Set the Curve ID to Select curve.
7. Select the predefined curve to Func1.
8. Click create to create the imposed velocity.
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Figure 272:
9. For Name, enter Impactor_constraints, set Select type to Boundary Condition and set the
GRNOD to Nodes.
10. Click nodes and select the master node of the rigid body.
11. Check all the degrees of freedom to constrain, except Tz.
12. Click create to create the boundary condition.
Define the Fixed Boundary Condition for Support
1. From the Utility menu, start the BCs Manager.
2. For Name, enter Support_fixed, set Select type to Boundary Condition and set the GRNOD to
Nodes.
3. Select the master node of the rigid body created on Supporter, as shown in the following image.
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4. Check all the degrees of freedom.
5. Click create to create the boundary condition.
Figure 273:
Figure 274:
Define the Symmetry Boundary Condition for Foam, Inner,
Outer and Flat
1. From the Utility menu, start the BCs Manager.
2. For Name, enter SYMMETRY_XZ, set Select type to Boundary Condition and set the GRNOD to
Nodes.
3. Select the nodes of the foam, inner, outer and flat, as shown in the following image.
4. Check the translational degrees of freedom Y and rotational degrees of freedom X and Z to
constraint.
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5. Click create to create the boundary condition.
Figure 275:
Figure 276:
6. Click close to exit the BC Manager.
Define the Contacts between Beam and Support
1. Launch the Solver Browser by clicking View > Browsers > HyperMesh > Solver.
2. In the Solver Browser, right-click and select Create > INTER > TYPE7.
3. Enter the values, as shown below:
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Figure 277:
4. Set the Surf_id (M) for the master selection to Components and select the Support component.
5. Set the Grnod_id (S) for the slave selection to Components and select the Flat component.
6. Similarly, create the contact for Impactor with Outer, as shown below.
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Figure 278:
Define the Self Contact between the Beam Components
1. Using the directions in Define the Contacts between Beam and Support, create a new Type
7 interface named Self with the components Outer, Inner, and Flat as Master and the same
components Outer, Inner, and Flat as Slave.
This will make the components self-contact instead of self-penetrate.
2. Verify that the interface has a Fric of 0.1 and Gapmin of 0.2.
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3.
Figure 279:
Create the Interface Time History
1. Right-click in the Solver Browser and select Create > TH > INTER.
2. For Name, enter IMPACTOR.
3. Switch the entity selector to groups.
4. Click groups and select the interfaces Impactor and Support from the list.
5. Click OK.
6. Set NUM_VARIABLES to 1 and Data: Var to DEF.
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Figure 280:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
3PBENDING
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
RunName
3PBENDING
ENGINE KEYWORDS
RUN
RunName
1
ENGINE KEYWORDS
RUN
Tstop
7.01e-2
ENGINE KEYWORDS
TFILE
Status
[Checked]
ENGINE KEYWORDS
TFILE
Time_frequency
0.0001
ENGINE KEYWORDS
PRINT
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
ENGINE KEYWORDS
PRINT
N_Print
-100
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
EPSP
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
VEL
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
2.5e-3
ENGINE KEYWORDS
DT
Status
[Checked]
ENGINE KEYWORDS
DT
Tscale
0.0
ENGINE KEYWORDS
DT
Tmin
0.0
ENGINE KEYWORDS
DT/NODA
Status
[Checked]
ENGINE KEYWORDS
DT/NODA
CST_0
[Checked]
ENGINE KEYWORDS
DT/NODA/CST_0
Tscale
0.9
ENGINE KEYWORDS
DT/NODA/CST_0
Tmin
7e-7
ENGINE KEYWORDS
DT/NODA
DEL
[Checked]
ENGINE KEYWORDS
DT/NODA/DEL
Tscale
0.9
ENGINE KEYWORDS
DT/NODA/DEL
Tmin
3.5e-8
ENGINE KEYWORDS
RBODY_ENGINE
RBODY/ON
Status
[Checked]
ENGINE KEYWORDS
RBODY_ENGINE
NUM_rbnodes
2
ENGINE KEYWORDS
RBODY_ENGINE
Data: Nodes
29664
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Keyword Type
Keyword
Parameter
Parameter Value
29665
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter 3BENDING and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file 3PBENDING_0000.rad.
3. Click Run.
Review the Results
1. See if there are any warnings or errors in .out files.
2. Using HyperView, plot the displacement, strain contour and vectors.
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RD-T: 3597 Cell Phone Drop Test
This tutorial demonstrates how to simulate a free fall of a cell phone due to gravity from a height of
1001mm using 2nd order tetra elements.
Figure 281:
Model Description
• UNITS: Length (mm), Time (s), Mass (ton), Force (N) and Stress (MPa)
-3
• Simulation time: in Engine [0 - 3.3e ]
• This is a very simple cell phone model used to demonstrate how to set up a drop test. The model
is an assembly of two solid parts meshed with Tetra 10 elements, connected with spring elements,
and contact defined between them.
• To reduce the simulation time, the cell phone is dropped 1 mm from the ground with an initial
velocity of -4429.4469 mm/s representing the velocity that it would have attained from a free fall
of 1000 mm.
• Boundary Conditions: Gravity load + initial velocity of -4429.4469 mm/s on the cell phone.
• Elasto-plastic Material /MAT/LAW36 (Plastic)
[Rho_I] Initial density = 1.16E
-9
ton/mm
3
[nu] Poisson's ratio = 0.3
[E] Young's modulus = 1000 MPa
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STRAIN
0
16
STRESS
1
17
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the cellphone.hm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create the Curve Material
1. Click XYPlots > Curve Editor.
2. In the Curve editor window, click New.
3. For the curve name, enter stress_strain_curve.
4. Click proceed.
5. From the Curve editor window, select stress_strain_curve from the Curve List.
6. Enter the X and Y coordinates, as shown below.
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Figure 282:
7. Click Update and then click Close.
Create and Assign the Material and Properties for Cell
Phone Parts
1. In the Model Browser, right-click and select Create > Material to create a new material.
2. For Name, enter cell_phone.
3. For Card Image, select M36_PLAS_TAB and click Yes in the confirmation window.
4. Input the values, as shown below.
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Figure 283:
5. Select N_func and set to 1.
6. Click fct_ID1 and select stress_strain_curve (the function curve previously created).
7. In the Model Browser, right-click and select Create > Property to create a property.
8. For Name, enter cell_phone.
9. For Card Image, select P14_SOLID and click Yes to confirm.
10. Set the variable I_tetra to a value of 1.
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Figure 284:
11. In the Model Browser, expand the Components folder, highlight the components
Cellphone_bottom and Cellphone_top and right-click to Assign (or use the Entity Editor) the
newly created property and material.
Create the Property for Spring Links
1. In the Model Browser, right-click and select Create > Property to create a new property.
2. For Name, enter spring.
3. Set Card Image to P13_SPR_BEAM and click Yes to confirm.
4. Enter the following values:
Mass (MASS)
2e-6
Inertia (Inertia)
4
2e-4 mm
Translation stiffness (K_Tensn, K_ShrY, and K_ShrZ)
50
Rotation stiffness (K_Tor, K_FlxY, and K_FlxZ)
100 N
5. Click return to return to Component panel.
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6. In the Model Browser, select the component Connection_springs and right-click Assign to
assign the newly created property to the spring component.
Define the Interface between Cell Phone Parts
1. In the Model Browser, right-click and select Create > Contact Surface.
2. For Name, enter self.
3. Click on Elements.
4. Switch from add shell elements to add solid faces.
5. Select elements by collector, select Cellphone_bottom and click select.
6. For face nodes, select nodes by collector, select cellphone bottom and click select > add >
return.
7. In the Model Browser, right-click and select Create > Contact.
8. For Name, enter Self.
9. Set Card Image to TYPE7 and click Yes to confirm.
10. For Grnod_id (S), select nodes > by collector, select Cellphone_top, click select > add and
click return.
11. For Surf_id (M), switch to Contactsurf, click on Contactsurf and select self.
12. Click OK.
13. Set Fric to 0.1.
14. Set Gapmin to 0.3.
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Figure 285:
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Figure 286:
Create a Rigid Wall
1. In the Model Browser, right-click and select Create > Rigid Wall.
2. For Name, enter GROUND.
3. Set the Geometry type to Infinite plane.
4. Click in the modeling window and press the F8 key on the keyboard.
5. Enter the node coordinates: X=0, Y=0, and Z=19.
6. Click create.
7. Click return to exit the panel.
8. In the Entity Editor, select the created node as Base node.
9. Make sure the normal vector is set to z-axis, as shown below.
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Figure 287:
10. For d, enter 50.
11. To review, go to the Solver Browser and select the RWALL folder.
12. Right-click on GROUND and click Review.
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Figure 288:
13. Click return to exit from the panel.
Create a Gravity Load
1. In the Model Browser, right-click and select Create > Set.
2. For Name, enter Gravity, set Card Image as GRNOD and click Yes to confirm.
3. Select Nodes of all three parts.
4. In the Model Browser, right-click and select Create > Load Collector.
5. For Name, enter loadcol1, set Card Image as GRAV_Collector and click Yes to confirm.
6. Set Direction to Z.
7. For Grnod_id, select Gravity from the Select Set dialog and click OK.
8. Set scale_y to -9810.0 indicating gravity in opposite Z direction.
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Figure 289:
9. From the XYPlots pull-down, click Curve Editor.
10. In the Curve editor window, click New.
11. For Name, enter gravity.
12. Click proceed.
13. In the Curve editor window, select gravity from the Curve List.
14. Enter X and Y, as shown in the following image:
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Figure 290:
15. Click Update and then click Close to exit the Curve editor window.
16. Back in Gravity load collector, update Ifunc to the curve just created.
Create an Initial Velocity
1. In the Model Browser, right-click and select Create > Load Collector.
2. For Name, enter Initial_velocity and set Card Image to INIVEL_Collector.
3. For Grnod_id, select the same set (Gravity) previously used.
4. For Vz =, enter the value -4429.4469.
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Figure 291:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
Cellphone_drop
CONTROL CARDS
MEMORY
Status
[Checked
CONTROL CARDS
MEMORY
NMOTS
40000 Not needed
CONTROL CARDS
SPMD
Status
[Checked]
CONTROL CARDS
IOFLAG
Status
[Checked]
CONTROL CARDS
ANALY
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
GridVel_Gamma
100.00
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
Tstop
3e-3
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
ON
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
DENS
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
EPSP
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0.0
ENGINE KEYWORDS
ANIM/DT
Tfreq
2e-4
ENGINE KEYWORDS
DT
Status
[Checked]
ENGINE KEYWORDS
DT
Tscale
0.0
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Keyword Type
ENGINE KEYWORDS
Keyword
DT
Parameter
Tmin
Parameter Value
0.0
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter Cellphone and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file cellphone_0000.rad.
3. Click Run.
Expected Results
Review the listing files for this run and verify on the results. See if there are any warnings or errors in
the .out files. Using HyperView, plot the strain and stress contour.
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Figure 292: von Mises Stress Contour (MPa)
Figure 293: Plastic Strain (mm/mm)
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RD-T: 3599: Gasket with HyperMesh
This tutorial demonstrates how to simulate a rubber gasket in sequential loading, given a load
sequence.
• Translation Transverse (10 mm)
• Translation Longitudinal (5 mm)
• Torsion (20 Degrees)
Figure 294:
Model Description
• UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
• Simulation time:
◦
Engine [0 - 1.501] in steps of 0.5 ms for each load case
• The outer circumference area is fixed on all degrees of freedom (VX, VY, VZ) and the center node is
fixed on X direction and the X and Y rotation (VX, WX, Wy)
• The gasket dimensions are: Thickness = 100 mm, External Diameter = 200 mm and Internal
Diameter = 50 mm.
• Hyper-Elastic Material /MAT/LAW42 (Rubber)
[Rho_I] Initial density = 6.0
-6
3
Kg/mm
[nu] Poisson’s ratio = 0.495
[mue1] (
1) = 0.6
[alfa1] (
1) = 2
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(alfa2] (
p.274
2) = -2
Load the Radioss User Profile
1. Launch HyperWorks Desktop.
2. From the Preferences menu, select User Profiles or click the
icon in toolbar.
3. Select Radioss (Block140) and click OK.
Open the Model File
1. Click the Open Model icon
from the radioss.zip file.
to open the gasket.htm file you saved to your working directory
2. Click Open.
The model loads into the modeling window.
Create and Assign the Material and Property to Rubber
1. In the Model Browser, right-click and select Create > Material to create the material.
2. For Name, enter rubber.
3. For Card Image, select M42_OGDEN and click Yes in the confirmation window.
4. Input the values, as shown below:
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Figure 295:
5. In the Model Browser, right-click and select Create > Property to create the property.
6. For Name, enter gasket.
7. For Card Image, select P14_SOLID and click Yes to confirm.
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Figure 296:
8. In the Model Browser, expand the Component folder and select GASKET. Right-click on Assign
and assign the newly created property and material.
Create a Component for Rigid Body at Center of the
Gasket
1. In the Model Browser, right-click and select Create > Component.
2. For Name, enter center, switch Card Image to None and click Yes to confirm.
3. Select any color for easy visualization.
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Figure 297:
Create a Rigid Body at Center of Gasket
1. From the 1D page, select the rigids panel.
2. For primary node, switch to calculate node.
3. For nodes 2-n, switch to multiple nodes.
4. Click the nodes and select a node in the inner face.
5. Click nodes and select by face.
HyperMesh will select all nodes on the inner face.
6. Click create.
7. Click return to exit the panel.
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Figure 298:
Create the Boundary Conditions for Gasket Inner
1. From the Utility menu, start the BCs Manager.
2. For Name, enter Inner_BC, set Select type to Boundary Condition and set the GRNOD to
Nodes.
3. Select the master node of rigid body created in Create a Rigid Body at Center of Gasket and click
proceed.
4. Check the Tx translational and Rx, Ry rotational degrees of freedom.
5. Click Create to create the inner fixed boundary condition.
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Figure 299:
Create the Boundary Conditions for Gasket Inner Y
Displacement
1. From the Utility menu, start the BCs Manager.
2. For Name, enter DISP_Y, set Select type to Imposed Displacement and set the GRNOD to
Nodes.
3. Select the master node of rigid body created in Create a Rigid Body at Center of Gasket.
4. Set Direction as Y.
5. Click Create/Select curve to go to the XY curve editor.
6. Click New and enter Name as DISP_Y. Click proceed.
7. Enter the following values for X and Y:
X = {0, 0.5, 1.0}
Y = {0, 10, 10}
8. Click Update and Close the XY curve editor GUI.
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Figure 300:
9. Click Create to create the boundary condition.
Create the Boundary Conditions for Gasket Inner Z
Displacement
1. From the Utility menu, start the BCs Manager.
2. For Name, enter DISP_Z, set Select type to Imposed Displacement and set the GRNOD to
Nodes.
3. Select the master node of rigid body created in Create a Rigid Body at Center of Gasket.
4. Set Direction as Z.
5. Click Create/Select curve to go to the XY curve editor.
6. Click New and enter Name as DISP_Z. Click proceed.
7. Enter the following vales for X and Y:
X = {0, 0.5, 1, 1.5}
Y = {0, 0, 5, 5}
8. Click Update and Close the XY curve editor GUI.
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Figure 301:
9. Click Create to create the boundary condition.
Create the Boundary Conditions for Gasket Inner Z
Rotation
1. From the Utility menu, start the BCs Manager.
2. For Name, enter ROT20DEG_Z, set Select type to Imposed Displacement and set the GRNOD to
Nodes.
3. Select the master node of rigid body created in Create a Rigid Body at Center of Gasket.
4. Set Direction as ZZ.
5. Click Create/Select curve to go to the XY curve editor.
6. Click New and enter Name as ROT20DEG_Z. Click proceed.
7. Enter the following vales for X and Y:
X = {0, 1, 1.5, 2}
Y = {0, 0, 0.349, 0.349}
8. Click Update and Close the XY curve editor GUI.
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Figure 302:
9. Click Create to create the boundary condition.
Create the Boundary Conditions for Outer Gasket
1. From the Utility menu, start the BCs Manager.
2. For Name, enter OUTER_BC, set Select type to Boundary Condition and set the GRNOD to
Nodes.
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3. Click Nodes and select a node on the outer surface.
4. Click Nodes on the panel and then select by face to select all nodes on the outer surface.
5. Check all the translational and rotational degrees of freedom.
6. Click Create to create the outer fixed boundary condition.
Figure 303:
Create Output Request and Control Cards
1. Launch the HyperMesh Solver Browser from View > Browsers > HyperMesh > Solver.
2. Right-click in the Solver Browser general area to create the cards, shown below with the given
values for each parameter:
Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
TITLE
Status
[Checked]
CONTROL CARDS
TITLE
TITLE
GASKET
CONTROL CARDS
MEMORY
Status
[Checked]
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Keyword Type
Keyword
Parameter
Parameter Value
CONTROL CARDS
MEMORY
NMOTS
40000 Not needed
CONTROL CARDS
SPMD
Status
[Checked]
CONTROL CARDS
IOFLAG
Status
[Checked]
CONTROL CARDS
ANALY
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
Status
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
ALE_Grid_Velocity
[Checked]
ALE-CFD-SPH
ALE_CFD_SPH_CARD
GridVel_Gamma
100.00
ENGINE KEYWORDS
RUN
Status
[Checked]
ENGINE KEYWORDS
RUN
RunName
GASKET
ENGINE KEYWORDS
RUN
Tstop
1.51
ENGINE KEYWORDS
PARITH
Status
[Checked]
ENGINE KEYWORDS
PARITH
Keyword2
ON
ENGINE KEYWORDS
PRINT
Status
[Checked]
ENGINE KEYWORDS
PRINT
N_Print
-1000
ENGINE KEYWORDS
ANIM/ELEM
Status
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
VONM
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
DENS
[Checked]
ENGINE KEYWORDS
ANIM/ELEM
PRES
[Checked]
ENGINE KEYWORDS
ANIM/VECT
Status
[Checked]
ENGINE KEYWORDS
ANIM/VECT
CONT
[Checked]
ENGINE KEYWORDS
ANIM/DT
Status
[Checked]
ENGINE KEYWORDS
ANIM/DT
Tstart
0
ENGINE KEYWORDS
ANIM/DT
Tfreq
0.05
ENGINE KEYWORDS
DT
Status
[Checked]
ENGINE KEYWORDS
DT
Tscale
0.0
ENGINE KEYWORDS
DT
Tmin
0.0
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Keyword Type
ENGINE KEYWORDS
Keyword
TFILE
Parameter
Time frequency
Parameter Value
1.5e-3
Export the Model
1. Click File > Export or click the Export icon
2. Click the folder icon
.
and navigate to the destination directory where you want to export to.
3. For Name, enter GASKET and click Save.
4. Click the downward-pointing arrows next to Export options to expand the panel.
5. Select Merge starter and engine file to export both the Starter and Engine file in one file.
6. Click Export to export the file.
Run the Model in the Solver
1. Go to Start > Programs > HyperWorks 2019 > Radioss.
2. For Input file, browse to the exercise folder and select the file GASKET_0000.rad.
3. Click Run.
Expected Results
Figure 304: Displacement Contour for the 3 Load Steps (mm)
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Figure 305: von Mises Stress Contour at the End of the Simulation
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Index
R
RD-T 3580: Boat Ditching without Boundary Elements 215
RD-T: 3000 Tensile Test Setup using HyperCrash 9
RD-T: 3030 Buckling of a Tube using Half Tube Mesh 20, 148
RD-T: 3050 Simplified Car Pole Impact in HyperCrash 31
RD-T: 3060 Three Point Bending 45, 240
RD-T: 3150 Seat Model with Dummy using HyperCrash 67
RD-T: 3160 Multi-Domain Analysis Setup using HyperCrash 103
RD-T: 3500 Tensile Test Setup using HyperMesh 113
RD-T: 3510 Cantilever Beam with Bolt Pretension 124
RD-T: 3520 Pre-Processing for Pipes Impact 138
RD-T: 3530 Buckling of a Tube using Half Tube Mesh 20, 148
RD-T: 3540 Front Impact Bumper Model 164
RD-T: 3550 Simplified Car Front Pole Impact 177
RD-T: 3560 Bottle Drop 190
RD-T: 3580 Boat Ditching 203
RD-T: 3580 Boat Ditching with Boundary Elements 203
RD-T: 3590 Fluid Flow through a Rubber Clapper Valve 226
RD-T: 3595 243
RD-T: 3595 Three Point Bending with HyperMesh 45, 240
RD-T: 3597 Cell Phone Drop Test 257
RD-T: 3599 Gasket with HyperMesh 273
287