GTSTRUDL
GTSTRUDL
Version 33 Release
and
Future Enhancements
Dr. Kenneth M.(Mac) Will
GTSUG 2013
June 2013
Charlotte, North Carolina
GTSTRUDL
Presentation Outline
• Version 32 shipped in August 2012
• New Features in Version 33
• Future Enhancements
GTSTRUDL
Status of Version 33
• Running QA and completing
documentation. QA will be performed on
the following 32 bit and 64 bit operating
systems: Windows XP, Windows Vista,
Windows 7 and Windows 8.
• Plan to ship in September.
GTSTRUDL
Version 33
GTSTRUDL
Dynamics
• The execution speed and memory
management have been improved for the
GTSELANCZOS eigenvalue solver.
The next slide illustrates the improvements
on a large model.
GTSTRUDL
Eigenvalue Analysis
Large Models
GTSELANCZOS Efficiency Improvements
Y
Z
X
Material = Concrete
Element Type = SBHQ6
Number of Elements = 60,744
Number of Joints = 59,736
Number of DOFs = 354,408
6
GTSTRUDL
Eigenvalue Analysis
Large Model
GTSELANCZOS Efficiency Improvements
GTSELANCZOS, Version 32
Total time to solve for 100 modes = 445 seconds
GTSELANCZOS, Version 33
Total time to solve for 100 modes = 118 seconds
7
GTSTRUDL
Dynamics (cont)
• The maximum allowable number of time
points used for the acceleration time history
integration procedure of the CREATE
RESPONSE SPECTRUM command has
been increased from 1 million to 4 million.
GTSTRUDL
General
• The external file solvers GTSES, GT64M,
GTSELANCZOS and GT64MLANCZOS now
use the folder “GTSresults” for all external files.
“GTSresults” is created, if needed, in the current
GTSTRUDL Working Directory. This results
folder name is fixed and no user control is
provided. This change will reduce the “clutter” in
the Working Directory when the external file
solvers are used.
GTSTRUDL
General (cont)
Note: To be able to restore external file results
saved (using the SAVE command) under
version 32 or earlier and restored under version
33 (using the RESTORE command), before
running GTSTRUDL 33 create a folder named
“GTSresults” and copy all the external files to
the new folder.
GTSTRUDL
General (cont)
• Prerelease features (Chapter 5 of the
Release Guide) will now output a warning
message indicating they are in prerelease
status. This change allows Quality
Assurance customers a simple way to be
aware if they are using prerelease features.
An example is shown on the next slide.
GTSTRUDL
General (cont)
• Command:
DESIGN SLAB USING WOOD AND ARMER AVERAGE JOI 1 11 ELE 1
• Output
****WARNING_CRCCMN - This feature is a Prerelease
feature. User feedback and suggestions are welcome.
GTSTRUDL
General (cont)
• A new ALL option has been added to the
list option of the PHYSICAL MEMBER
COMPLIANCE CHECK command. This
option allows users to check the compliance
of all physical members in a single
command. This feature is documented in
the Section 2.1.2.10.2 of Volume 1.
GTSTRUDL
General (cont)
• The CREATE AUTOMATIC command has two
new features:
– First is the option to create FORM LOADS, which are
independent loads suitable for nonlinear analysis.
– Second is the option to use multiple “SETS” of
EXCLUSIVE loads, which allow you to create loadings
by combining one load (or load group) from each SET.
For example, this gives you the ability to create all
combinations of Live and Wind loads by putting the
different load types in different SETs.
GTSTRUDL
General (cont)
• New syntax for the Create Automatic
command:
(LOAD) COMBINATIONS
CREATE AUTOMATIC 
 (id _ spec)
FORM (LOADS)

ONE (ONLY) (OF) 


 EXCLUSIVE
 (SET s id ) (LOADS) spec 3
 INDIVIDUAL



GTSTRUDL
General (cont)
• Example of the revised Create Automatic
command with multiple EXCLUSIVE
commands in different SETS:
CREATE AUTOMATIC LOAD COMBINATIONS INITIAL 101
CONSTANT ‘DL’ 1.4
EXCLUSIVE ‘LL1' ‘LL2' ‘LL3' ‘LL4' 1.6
$ Assumed SET 1
EXCLUSIVE SET 2 ‘WL1' ‘WL2' 1.7
$ Specified SET 2
END
The above commands will create 8 load combinations as shown on the
next slide.
GTSTRUDL
General (cont)
GTSTRUDL
General (cont)
• The AREA LOAD command has been
enhanced with two new features for
ELEVATION. The EXCEPT option will
now accept multiple regions, allowing the
specification of all the “holes” (stairwells,
atria, etc.) in a floor in a single
ELEVATION command.
GTSTRUDL
General (cont)
• A new option IGNORE MEMBERS has
been added to allow the specification of
members to not include in the AREA
LOAD calculations. Previously these
unloaded members, such as braces, needed
to be INACTIVE before issuing the AREA
LOAD command.
Examples are shown on the next slides.
GTSTRUDL
General (cont)
ELEVATION 36.75 EXCEPT LIMITS JOINTS 345 789 LIMITS MEMBERS 45 78 124 158 VALUE TWO WAY 100.0
Two “holes” are not loaded, the first bounded
by joints 345 and 789 and the second
outlined by members 45, 78, 124 and 158.
GTSTRUDL
General (cont)
ELEVATION 36.75 IGNORE MEMBERS ‘B1' TO ‘B12' VALUE TWO WAY 100.0
The areas and loadings are determined
without considering bracing members ‘B1'
to ‘B12'. These members will not be loaded
and their ACTIVE/INACTIVE status is not
affected.
GTSTRUDL
General (cont)
• RESTORE will now internally re-issue a
“LARGE PROBLEM SIZE n” command if
such a command had been given when the
SAVE command was executed. This only
applies to Version 33 and later.
.gts files created under earlier versions can
be restored but no automatic LARGE
PROBLEM SIZE command will be
generated.
GTSTRUDL
General (cont)
• If the LARGE PROBLEM SIZE command
is generated, an INFO message is printed:
****INFO_XXREST - LARGE PROBLEM SIZE 5 restored.
GTSTRUDL
GTSTRUDL Output Window
• New dialog for Automatic Load
Combinations and Automatic Form Loads
– Supports all features of revised Create
Automatic Load Combination and Form Load
command
– Revised Dialog is shown on next slide
GTSTRUDL
Form Loads and Load
Combinations
Multiple SET’s of
Exclusive Loads
GTSTRUDL
GTSTRUDL Output Window (cont)
• The Console and Scope Environment
buttons have been removed from the Button
Bar. The Scope Environment is no longer a
supported feature and the Console button is
no longer needed to return from the Scope
Environment window. The GTMenu button
will remain on the Button Bar as shown on
the next slide.
GTSTRUDL
GTSTRUDL Output Window (cont)
• Removal of the Console and Scope
Environment from the Button Bar:
Before Version 33:
Version 33:
Note: You may still access the Scope Environment with
the Plot Device Scope command
GTSTRUDL
GTSTRUDL Output Window (cont)
• The Area Load dialog has a new option in
the Loading menu: Print Preview and Edit.
This option sends the Area Load display to
the Scope Editor where you can edit and
print the elevation display.
The Print Preview and Edit option in the
pulldown menu is shown on the next slide
GTSTRUDL
GTSTRUDL Output Window (cont)
GTSTRUDL
GTSTRUDL Output Window (cont)
• A new Warning Message indicator has been
added to the Button Bar as shown below:
W
New Warning Message
Indicator (in yellow when
activated)
GTSTRUDL
GTSTRUDL Output Window (cont)
• By clicking on the highlighted W, a list of
the Warning Messages will pop-up. You
can jump to the occurrence of the message
in the output by clicking on a specific
message.
– An example of the pop-up list of warning
messages is shown on the next slide
GTSTRUDL
GTSTRUDL Output Window (cont)
GTSTRUDL
GTMenu
• Display Model will now display the cross
section for members that have properties
created using the Member Property Channel
and Polygon cross-section specs. The
Polygon cross sections will be drawn as
pipes.
GTSTRUDL
GTMenu (cont)
• The time to display wire frame models
which contain a large number of finite
elements has been greatly reduced.
• The time for Redraw Solid has been greatly
reduced for large models.
• The time to Exit GTMenu and save the
changes has been reduced for models which
contain a large number of solid elements.
GTSTRUDL
GTMenu (cont)
• As a result of the improvements to the wire
frame display of models which contain a
large number of finite elements, the time for
Print Preview in the Scope Editor has been
significantly decreased due to the reduced
number of lines which are now being
drawn. An example of the Scope Editor
before and after these changes is shown on
the next two slides.
GTSTRUDL
Version 32
285,032
elements (lines
& symbols)
GTSTRUDL
Version 33
188,013
elements (lines
& symbols)
34% reduction
GTSTRUDL
GTMenu (cont)
• The global axes in the display area are now
displayed as 3D arrows as shown below:
GTSTRUDL
GTMenu (cont)
• The location for the display of the global
axes may be changed to the origin of the
global coordinate system using the revised
Set Display Options dialog as shown on the
next slide.
GTSTRUDL
New Global Axis
Location option
GTSTRUDL
Global
Coordinate
System at
Origin
GTSTRUDL
GTMenu (cont)
• If a window is created without the global
origin in the window, the Global Axes will
still be displayed in the window.
GTSTRUDL
GTMenu (cont)
• A new feature has been implemented to
facilitate the location of a joint, member or
element on large models or on models with
members and elements closely spaced. You
may activate this feature either from the
Annotate Model button on the Button Bar or
by entering LJ, LE or LM when the Display
Area is active.
GTSTRUDL
GTMenu (cont)
• This new feature will draw concentric
octogons of decreasing size around the joint,
member or element with the label on the
joint, member or element finally shown.
The revised Annotate Model Dialog is
shown on the next slide.
GTSTRUDL
New Locate
option on
Annotate Model
dialog
GTSTRUDL
Nonlinear
• Nonlinear dynamic analysis has been enhanced to
detect when a solution is diverging and to issue a
warning message.
GTSTRUDL
Offshore
• The SAVE command now saves the data computed
by the COMPUTE FATIGUE LJF command. This
enhancement enables the COMPUTE FATIGUE
LJF command and a subsequent PEFORM
FATIGUE ANALYSIS command to be executed in
consecutive jobs separated by SAVE and RESTORE
commands, the first job executing the COMPUTE
FATIGUE LJF command and ending with a SAVE
command and the second job beginning with a
RESTORE command and executing the PERFORM
FATIGUE ANALYSIS command.
GTSTRUDL
Offshore (cont)
• A new option has been added to the PRINT
FATIGUE command as follows:
PRINT FATIGUE NUMBER OF WAVES
The PRINT FATIGUE NUMBER OF WAVES
command prints a tabular report of the number of
waves of the various distinct wave height-period pairs
in each of the specified wave directions. The format
of the new report is shown on the next slide.
GTSTRUDL
GTSTRUDL
Offshore (cont)
• A new DAMAGE option has been added to the
LIST FATIGUE command as follows:
GTSTRUDL
Offshore (cont)
• This command produces a report of the fatigue
damage in a table ordered on wave height/period
and direction. The report is produced for the
critical point (point with the highest damage) at
the end of each brace connected to each specified
joint. This report also includes the center of
damage with respect to wave height/period for
each direction. An example of the format of the
new report is shown on the next slide.
GTSTRUDL
GTSTRUDL
Offshore (cont)
• The following fatigue analysis commands
have been enhanced to support the use of
the GTSES solver when activated by the
ACTIVE SOLVER GTSES command:
ASSEMBLE FOR FATIGUE
SOLVE FOR FATIGUE
COMPUTE FATIGUE LJF
PERFORM FATIGUE ANALYSIS
GTSTRUDL
Offshore (cont)
• A new GTSELOS feature has been implemented
whereby additional tables express the drag
parameters CD and CM as function(s) of one or
more of the existing pipe member diameter, water
depth, Reynolds number parameters, plus the
additional parameters roughness and KeuleganCarpenters Number.
GTSTRUDL
Steel Design
• The AISC 14th Edition design code has been
implemented as a released feature. Both
LRFD (load and resistance factor design)
and the ASD (allowable strength design)
methods of the AISC Fourteenth Edition
are implemented.
GTSTRUDL
Steel Design (cont)
• This new code, AISC14, may be used to
select or check any of the following shapes:
Design for bi-axial bending and axial forces:
I shapes
Channel
Single Angles Tees
Double Angles Solid Round Bars
Solid Rectangular and Square Bars
GTSTRUDL
Steel Design (cont)
AISC14 code design for bi-axial bending,
axial, and torsional forces:
Round HSS (Pipes)
Rectangular and Square HSS (Structural
Tubes)
The documentation for the AISC14 code may be found by
selecting Help and then Reference Documentation,
Reference Manuals, Steel Design, and AISC14 in the
GTSTRUDL Output Window.
GTSTRUDL
Steel Design (cont)
• New and modified Parameters for the
AISC14 code:
CODE AISC14 ALL
If using METHOD ASD, the following parameter
may be used to specify an ASD reduction factor
for the second order analysis results which
should be analyzed for 1.6 times the ASD
loadings:
ASDRF 1.6 ALL
GTSTRUDL
Steel Design (cont)
• Other parameters that are specific to AISC14:
CombEqs – parameter to indicate which flexure
and axial force combined equation from Section
H1 or H2 is to be used.
SECNDARY – parameter is applicable to the
stiffened element of I shapes which are used as
diagonal braces
GTSTRUDL
Steel Design (cont)
• The ANSI/AISC N690-12, specification for
safety-related steel structures for nuclear facilities
has been added. This code is based on the AISC
steel construction manual, Fourteenth Edition
specification with a few modifications. Both
LRFD (load and resistance factor design) and the
ASD (allowable strength design) methods of the
AISC Fourteenth Edition are applicable.
GTSTRUDL
Steel Design (cont)
• Applicable cross-sections for N690-12 are
I shapes, Channel, Single Angles, Tees,
Double Angles, Round HSS (Pipes),
Rectangular and Square HSS (Structural
Tubes), Solid Round Bars, Solid
Rectangular and Square Bars.
GTSTRUDL
Steel Design (cont)
• New parameters for N690-12:
StemTees – parameter for the unstiffened element
of the stem of tee shaped compression
members.
ColSMF – parameter to limit the width to
thickness ratio of flanges of built-up box
sections of columns in SMF systems.
GTSTRUDL
Steel Design (cont)
• The transmission tower provisions,
slenderness ratio and computation of the
number of bolts, are now implemented in
AISC14 code. When a value of YES has
been specified for parameter TowerCK,
transmission tower provisions are checked
in addition to the provisions of the AISC14
code. Applicable cross-sections are single
and double angles.
GTSTRUDL
Steel Design (cont)
• Elastic shear resistance of the EC3-2005 has
been modified to use the first moment of
area. The local shear stress, τED, in the
Equation 6.20 of the EN 1993-1-1:2005(E)
is now computed using the first moment of
area (e.g. S). The thickness, t, in the
Equation 6.20 also has been modified to use
the total thickness of the cross-section to
resist the shear force.
GTSTRUDL
Steel Design (cont)
• A new steel grade, A1011G33, has been
added to the AISI89 code for the
UNISTRUT cross-sections. This is the
ASTM steel grade A1011 with a yield stress
of 33 ksi.
GTSTRUDL
Steel Tables
• New Imperial and Metric tables from the
AISC 14th edition have been added to
GTSTRUDL.
• The tables for rectangular and circular
concrete sections has been moved to a
release status. The table names are
CONCIR and CONRECT.
GTSTRUDL
Base Plate Wizard
• The Loading page has been changed, with a new
layout and functionality. The load data display is
no longer editable. Load data entry, editing and
deletions is now done through dedicated dialogs
available from buttons on the Loading page. A
display units control has been added to allow you
to see the loading data in units other than the
default of inches and pounds or millimeters and
Newtons. The modified Loading page is shown
on the next slide.
GTSTRUDL
Base Plate Wizard (cont)
New Edit and
Delete buttons
New ability
to change
units
GTSTRUDL
Base Plate Wizard (cont)
• A ‘Run Analysis’ option has been added to the
File menu. After loadings have been added to the
Base Plate or a .gtbp file with loadings and either
anchors or constraints has been read, this menu
selection will automatically create an input file
including analysis and process the file. If File Write GTSTRUDL input has been used, those
dialog settings (file name, result types, .gts file)
are retained and used by Run Analysis. The
revised File menu is shown on the next slide.
GTSTRUDL
Base Plate Wizard (cont)
GTSTRUDL
Base Plate Wizard (cont)
• Two new pipe and hollow shape tables have
been added to the GTStrudl\33\BasePlate
folder: PIPES9.txt and RdHSS13.txt. These
tables correspond to the GTSTRUDL
standard tables of the same name. The
profiles can be accessed by using the Options
- Attachment file menu pick or by
concatenating one or both files to your current
default attachment file.
GTSTRUDL
Base Plate Wizard (cont)
• A new results type has been added:
Constraint Reactions.
Constraint Reactions are only applicable to
constraints with restrained boundary
conditions. Constraint Reactions are
available through the Results - Constraint
reactions menu pick, or as part of the
Results Summary.
GTSTRUDL
Base Plate Wizard (cont)
Constraint Reactions consist of the force reactions
FX, FY and FZ for each joint in the constraint,
plus the SRSS (Square Root Sum of the Squares)
of the three shear values. You can request the
reaction moments MX, MY and MZ if desired.
Constraint Reactions are equivalent to the
GTSTRUDL command :
“LIST REACTIONS JOINTS GROUP ‘CON1'”
(for constraint #1).
GTSTRUDL
Base Plate Wizard (cont)
• A new results type has been added: Attachment
Displacement.
Attachment Displacement is the displacement of
the control or load point of an attachment due to
the applied loads. It is equivalent to the
GTSTRUDL command:
LIST DISPLACEMENTS JOINT ‘C1’
(for attachment #1). Attachment Displacement is
only available through the Results Summary.
GTSTRUDL
Base Plate Wizard (cont)
• The Constraint Reactions results dialog has
been added under the Results pulldown
menu:
GTSTRUDL
Base Plate Wizard (cont)
• The Constraint Reactions Results table is
shown on the next slide. Use the “Forces +
Moments” button to include MX, MY and
MZ in the table.
The “Select loads” button allows you to
select which loads are included in the table.
By default, all loads are included.
GTSTRUDL
GTSTRUDL
Base Plate Wizard (cont)
• The Results Summary dialog and output
have been changed. Changes include:
– Individual load maximums for bearing surface
pressure, plate displacement and plate stress.
– Selectable plate stress types.
– Attachment centroid displacements and
rotations.
– Constraint reactions.
• The revised dialog is shown on the next
slide.
GTSTRUDL
GTSTRUDL
QA
• Since the last Users Group meeting, we
have been audited a record number of times:
The following audits were conducted:
NIAC (Nuclear Industry Assessment
Committee) (Burns and McDonnell lead)
Nuclear Systems Audits (Internal)
Bechtel National
Shaw Nuclear
Sargent and Lundy
GTSTRUDL
QA (cont)
• Simpson, Gumpertz and Heger
• IHI Corporation (Japan)
• NUPIC (Nuclear Procurement Issues
Committee)
• ENERCON
• Automated Engineering Services
GTSTRUDL
Future Enhancements
GTSTRUDL
Base Plate
• X or Y rotation of attachments to model
attachments which are not parallel to Z such
as angled brace legs for pipe supports.
• Arbitrary load points (X,Y,Z) for
attachments.
• Decimal place control in results output.
• Optional LIST SUM FORCES results for
Constraints to allow easy cut line
calculations.
GTSTRUDL
Base Plate (cont)
• Batch processing of .gtbp files.
• Optional output of load names causing the
largest interaction value for anchors in
Results Summary.
• Have options to exclude stress
concentrations at end points of attachments
and constraints in stress output report.
Preliminary dialogs are shown on the next
slides.
GTSTRUDL
Base Plate (cont)
• To exclude joints at the end points of the
lines that are used to model within the BPW
from Stress listings and summary, use the
Advanced Plate Stresses menu
GTSTRUDL
Base Plate (cont)
• First, select one or
more modeling entities
to exclude joints from.
Note that “Distance” is
a radius from line
endpoints. The result
is shown on the next
slide.
GTSTRUDL
GTSTRUDL
Dynamic Analysis
• Implement GTSES/GT64M versions of
linear direct integration (physical) transient
analysis.
• Computation of minimum seismic load
according to latest IBC provisions.
• Implement the Lindley-Yow response
spectrum rigid-periodic mode combination
method as a companion to the presently
available Gupta method.
GTSTRUDL
Dynamic Analysis (cont)
• Response spectrum analysis will keep a
record of eigenvalue analysis results on a
load-by-load basis. This will be particularly
useful when the results of different
eigenvalue analyses are used for different
response spectrum load analyses in the same
job, and mode combinations such as CQC,
which is a function of damping ratio and
frequency, are used.
GTSTRUDL
Dynamic Analysis (cont)
• Improve the efficiency of the
GT64MLANCZOS eigenvalue solver for
very large jobs that require very high
numbers of modes (e.g. 300,000 DOFs and
10,000 modes).
GTSTRUDL
Dynamic Analysis (cont)
• The LIST DYNAMIC PARTICIPATION
FACTORS command will be enhanced to
also list the frequencies of each mode.
GTSTRUDL
Finite Elements
• Implement local element coordinate system
results processing (text reports and
graphical display of stress contours) for
selected planar elements, in particular the
SBHQ and SBHT family of plate elements
and the SBMITC element. This is
particularly convenient and useful for
structures formed by surfaces of revolution.
GTSTRUDL
Finite Elements (cont)
• Implement new 3 node plane stress, plate
bending and plate triangular elements. The
plane stress element will have 3 DOF (two
translational DOF and a drilling DOF). The
plate bending element will model
moderately thick plates. These two new
elements will be combined to form a new
plate element.
GTSTRUDL
General
• Add sorting and limits to LIST CODE CHECK RESULTS
• PRINT JOINT CONNECTIVITY and form a Group of the
members and elements incident on joints in a list.
• PRINT INCIDENT JOINTS MEMBERS/ELEMENTS
command to print the joints incident to a list and create a
GROUP.
• When second and subsequent JOINT LOADS are applied
to a joint in a loading condition, the WARNING will
change to INFO.
GTSTRUDL
General (cont)
• LOCATE FLOATING JOINTS ( (AND) -REMOVE )
Only joints that are not attached to any member, finite element,
nonlinear spring or rigid body will be considered as possible “floating”
joints. If a joint is used as a BETA REFERENCE JOINT it will not be
considered “floating”.
• LOCATE DUPLICATE ELEMENTS ( (AND) REMOVE (ADD
LOADS) ).
Similar to LOCATE DUPLICATE MEMBERS.
• LOCATE INTERSECTING MEMBERS list TOL v
Detect members within a tolerance (TOL) of each other to locate
“crossing” members that may look correct graphically but should
actually have a common joint at their intersection.
• Add finite elements to LOCATE INTERFERENCE JOINTS.
GTSTRUDL
General (cont)
• Add the ability to write or change support status as part of
the CALCULATE SOIL SPRINGS command. Currently,
user must have already specified joints as supports and
joint releases.
• The AASHTO HL-93 truck will be added to the Moving
Load Generator.
• A new option will be added to the PRINT MEMBER
PROPERTIES command to print all cross-sectional
property information.
GTSTRUDL
General (cont)
• A general-purpose zero-length, linear spring
element is planned for implementation by
the specification of a symmetric stiffness
matrix in terms of Kaa, Kba, and Kbb,
similar to the method used to specify
superelement stiffness matrices.
GTSTRUDL
General (cont)
• AREA LOAD enhancements
Check for interference joints and intersecting members in
plane before attempting to locate bounded areas.
Improve error reporting:
List of 0.0 length members
Start joint for "illegal configuration" to help with
determining configuration problem.
Add IGNORE NONORTHOGONAL MEMBERS option.
Ignore members not within specified angle of global axis
so bracing doesn’t need to be inactivated.
GTSTRUDL
General (cont)
• Develop 64 bit version of GTSTRUDL.
GTSTRUDL
GTMenu
• Add Undo to remove duplicate joints dialog
to avoid corrupting model due to using a
tolerance which was too large.
• Graphically specify Area Loads in
GTMenu.
GTSTRUDL
GTMenu (cont)
• Addition of the following items to the input
file created by GTMenu:
– Dynamic Loadings
– Eigen Parameters
– Dynamic Modal Damping Data
– Nonlinear Solution Parameters
– Cable Network Data
– Nonlinear and Dynamic Analysis solution
commands
GTSTRUDL
GTMenu (cont)
• Add the ability to apply filters to the model
to display only entities corresponding to the
active filter.
• Automatically create Views such as for
every floor and every vertical plane of
building. Also, develop commands that will
do this.
GTSTRUDL
GTMenu (cont)
• Develop Joint, Member and Element
Datasheets for Inquire and Editing
– Preliminary development is shown on the next
few slides.
GTSTRUDL
GTMenu (cont)
• You will be able to
optionally use the
datasheets for a right
click Inquire function.
The option will be set
using the pulldown
below:
GTSTRUDL
GTMenu (cont)
• Sample datasheet
using right click
Inquire on joints
GTSTRUDL
GTMenu (cont)
• Revised Edit Joint
Data dialog showing
Datasheet Options.
Similar dialogs will be
available for the Edit
Member Data and Edit
Element Data dialogs.
GTSTRUDL
GTMenu (cont)
• Sample Portion of Member Datasheet
GTSTRUDL
Nonlinear Analysis
• The nonlinear member end connection and
plastic hinge models will be supported by
nonlinear dynamic analysis.
• Add nonlinear viscous damper element for
nonlinear dynamic analysis.
GTSTRUDL
Nonlinear Analysis (cont)
• Efficiency improvements are planned for
the GTSES sparse equation solver used by
nonlinear static analysis, similar to those
implemented in Version 32 for the GTSES
linear static analysis solver.
• A GT64M sparse equation solver is planned
for nonlinear static analysis.
GTSTRUDL
Nonlinear Analysis (cont)
• Higher order improvements are planned for
the nonlinear geometric versions of the
plane and space frame member.
• The implementation of a nonlinear
geometry model is planned for at least one
solid finite element, probably the IPSL and
IPSLIM elements.
GTSTRUDL
Nonlinear Analysis (cont)
• Extend geometric nonlinear analysis to
include the new SBMITC element and the
new triangular plate element.
GTSTRUDL
Offshore
• Implement procedures that enable
GTSTRUDL to perform the required
dynamic analyses of GTSELOS wave load
data and to use the dynamic wave force
results in fatigue analyses.
GTSTRUDL
Offshore (cont)
• GTStrudl fatigue analysis is presently
restricted to the use of a single S-N curve
that applies to all members undergoing a
given fatigue analysis. An improvement to
this procedure is planned whereby multiple
S-N curves can be defined as functions of
pipe member wall thickness, a reference
thickness, a thickness exponent, and a stress
range and assigned individually to
members for the fatigue analysis.
GTSTRUDL
Offshore (cont)
• An Influence Matrix approach to perform
hotspot fatigue analysis of connection
details other than simple tubular joints is
planned.
• Increase precision of wave load
computations in GTSELOS.
GTSTRUDL
Reinforced Concrete
• The ACI 318-11 code will be implemented
for beam and column design.
• The DESIGN SLAB command will be
brought to release status.
GTSTRUDL
Steel Design (cont)
• Move offshore code, 19902-07, to release
status. 19902-07 code is based on the
International Standard ISO 19902:2007(E),
First Edition, Petroleum and natural gas
industries.
GTSTRUDL
Steel Design (cont)
• Add new parameter called ‘DesLoads’
which can be used to specify design loads.
• Add an option to create a group containing
the critical loads at the end of a CHECK or
SELECT command.
GTSTRUDL
Steel Design (cont)
• Add a new option to the CHECK and
SELECT commands to print the load names
and section location used for the code
check.
• Displacement Constraint Design Procedure
will be available to select members to
satisfy joint displacement constraints. The
new GTSES external file solver will be
added as an option.
GTSTRUDL
Steel Design (cont)
• Steel design based on the Seismic
provisions of the AISC 14th Edition.
• Add a new option to the SELECT command
to design the FAILED members.
SELECT ALL FAILED MEMBERS
• Also add a new option to the CHECK
command to design the FAILED members.
GTSTRUDL
Steel Design (cont)
• Modify the FOR MAXIMUM ENVELOPE
VALUES option of the SELECT and
CHECK command when the cross-section
is an unsymmetrical cross-section.
GTSTRUDL
Steel Design (cont)
• Add a FOR MAXIMUM DIAGRAM VALUES
option to the SELECT and CHECK command.
This option creates a single maximum force value
for each individual load case. When this option is
used, each artificial load case will have force and
moment values which are the maximum values of
individual forces and moments no matter where
the maximum is located along the member’s
length.
GTSTRUDL
Interfaces to Other Programs
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ATLAS by 3DR Engineering Ltd. in Europe
AutoCAD – interface via DXF converter
Intergraph’s Frameworks
Intergraph’s SmartPlant 3D – CIS/2
Structural Desktop by Structural Desktop, Inc
Tekla Structures
Other CAD programs which support DXF or
CIS/2
GTSTRUDL
Your assistance is needed to help us improve
GTSTRUDL in your Committee meetings :
• Please provide us with a prioritized list of the
features that you would like to see. Please be
specific especially when requesting new
commands, model wizard additions, design
codes (which codes and which cross sections)
or datasheet requests.
Sample commands, sketches of wizards, output, and
graphical displays help us tremendously.