MME3360b
Assignment 01
6.25% of final mark
Each problem is worth 25% of assignment mark
Unless otherwise stated, use SI units:
displacement [mm]
stress [MPa]
1
PROBLEM 1a
Perform convergence analysis of HOLLOW PLATE (chapter 2) by means of global mesh refinement.
Use three meshes: coarse, default and fine. Summarize displacement and von Mises stress results in the table
#DOF
Displ
VMnodal
VMelement
VMnodal VMelement
mesh 1
mesh 1
mesh 3
Graph (Excel) the following as function of the number of degrees of freedom, use log scale on x axis.
• maximum resultant displacement
• maximum von Mises nodal stress (averaged stress)
• maximum von Mises element stress (non averaged stress)
Explain the reasons why displacement and stress increase with the increase of the number of degrees of freedom.
Explain why the difference between the nodal and element stress decreases with mesh refinement.
Explain why the effect of mesh refinement is much greater for von Mises stress that for maximum displacement.
2
PROBLEM 1b
Repeat solution of problem 1a using h-adaptive solution method. Use a coarse mesh (different from
problem 1a) as a starting point. Use settings as shown below. Create graph showing convergence of von
MIses stress, use graph tool in SW Simulation. Summarize results from the final run in the table:
#DOF
Displ
VMnodal
VMelement
VMnodalVMelement
h adaptive
3
PROBLEM 2a
Use model configuration without round fillet.
Perform convergence process of L BRACKET (chapter 3) using local mesh bias (mesh control).
Create the same table and graph (Excel) as in PROBLEM 1a
Explain the reasons for divergent stresses.
PROBLEM 2b
Use model configuration without round fillet.
Perform convergence process of L BRACKET using h adaptive process with default mesh as a starting point.
Create the same table as in PROBLEM 1b. Use graph tool in SW Simulation to prepare the graph.
Explain the reasons for divergent stresses.
PROBLEM 2c
Use model configuration with round fillet.
Perform convergence process of L BRACKET (chapter 3) using h adaptive process with default mesh as a
starting point. Create the same table and graph as in PROBLEM 1b. Use graph tool in SW Simulation to
prepare the graph.
Explain the reasons for convergent stresses.
4
PROBLEM 3
Find the maximum force load that model BRACKET (chapter 13) will take. Cut model in half and define symmetry
boundary conditions.
Material is aluminum 1060 (re-define this material in SW model). Make your conclusions based on converged results,
obtain converged results using your choice of convergence method. Use SI units (MPa). Use the factor of safety 2.
Discuss the safety criterion you use. Save your discussion in the properties of Simulation study.
Max. force load?
Symmetry B.C.
5
PROBLEM 4
Find the maximum pressure magnitude the model CLIP will take (chapter 15). Material is ceramic porcelain (re-define
this material in SW model).
Make your conclusions based on converged results, obtain converged results using your choice of convergence
method. Use English units. Use the factor of safety 2. Discuss the safety criterion you use. Save your discussion in
the properties of Simulation study.
pressure ?
Fixed restraint
to the bottom
6
Electronic deliverables
You will have created the following Simulation studies (study names in blue):
HOLLOW PLATE with the following studies:
Problem 1a
01 coarse, 02 default, 03 fine
Problem 1b
04 h adaptive
L BRACKET with the following studies:
Configuration 01 no fillet
Problem 2a 01 coarse, 02 default, 03 fine
Problem 2b 04 h adaptive
Configuration 02 fillet
Problem 2c 05 h adaptive
BRACKET with study:
study 1
This study should be saved with the maximum load
CLIP with study:
study 1
This study should be saved with the maximum load
All studies must have all plots, h-adaptive studies must also have convergence graphs.
Generate automatic reports in MS Word for each study.
ZIP all models (4 part files) and all report files (11 MS Word files) into youremail.zip and upload to assignment
drop off box on webCT. DO NOT include *.CWR files or you’ll loose marks.
Paper deliverables
Does not need to be in color. Drop off into the course locker 2 near SEB3107
Problem 1:
Tables/Graphs/Written answers to questions
Problem 2:
Tables/Graphs/Written answers to questions
Problem 3, 4
no paper part
7