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L9-1 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Introduction to ANSYSMechanical
Customer Training Material
Lecture 9
CAD & Parameters
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Introduction to ANSYS Mechanical
L9-2 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training MaterialChapter Overview
• In this chapter, interoperability with CAD software as well as
parameters will be discussed.
A. CAD Interoperability
B. Defining Parameters in Workbench
C. Using the Parameter Workspace
D. Updating CAD Parameters
E. Workshop 9-1
• The capabilities described in this section are generally applicable to
all ANSYS licenses. However, some CAD functionality are specific
to certain CAD software, so these will be designated accordingly.
– Not all CAD software have the same features, so there are somedifferences in CAD-related functionality which is supported in
Mechanical.
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Introduction to ANSYS Mechanical
L9-3 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training MaterialA. CAD Interoperability
• Numerous Geometry Interfaces are available for commercial CAD
systems:
– For the latest information on CAD geometry interfaces and supported
platforms see the ANSYS Workbench Mechanical documentation.
• Geometry Interface licenses can be run in reader mode for all licenses.
• Geometry Interfaces can be run in plug-in mode for the CAD software listed
under “Associative”.
• DesignModeler is the Workbench geometry application and supports all the
functions and capabilities listed for commercial CAD systems.
• Please note, not al l impo rt capabi l i t ies descr ibed here are avai lable with al l
CAD systems. Features depend on CAD capabi l i t ies and the sup po rt
provided through the CAD vendor’s API.
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Introduction to ANSYS Mechanical
L9-4 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material… CAD Interoperability
• There are various items that can be
imported from supported CAD systems:
– Geometry, Spot welds, Parameters,
Material properties, etc.
• To access these import preferences use
the Geometry properties in the Project
schematic.
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Introduction to ANSYS Mechanical
L9-5 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material
• Import solid, surface, or line bodies:
– Assemblies with mixed solids and surfaces areOK.
– Select desired geometry type to filter import.
– Cannot import a part with mixed solids andsurfaces.
• Use Associativity:
– Allows updating CAD geometry in Mechanicalwithout redefining material properties, loads,supports, etc..
• Smart CAD Update:
– only modified components of a CAD assembly are
updated.
• Local Coordinate systems:
– Allows local CS from CAD models to import withgeometry. See current documentation for CADsystem support.
… Geometry Import
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Introduction to ANSYS Mechanical
L9-6 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material… Named Selections Import
• If “groups” are defined in the CAD
package they can be imported as NamedSelections:
– “Groups” containing the specified prefix
in their name are imported in the Named
Selection branch (default is “NS”).
– To import all groups leave the namedselection key field blank.
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Introduction to ANSYS Mechanical
L9-8 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material… Parameter Import
• Parametric CAD dimensions can be
imported into Mechanical:
– When checked, CAD parameter names
containing the parameter key will be
imported into Mechanical.
– To import all parameters leave the
parameter key field blank. – CAD parameters will appear in the Details
view for the part.
– Note: CAD parameters are “read only” atthis point.
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Introduction to ANSYS Mechanical
L9-9 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training MaterialB. Defining Parameters in Workbench
• Input and output parameters are defined in
Mechanical by toggling the parameter flag on/off.
• Click in the square and a blue “P” will appear,
indicating that this quantity can now be manipulated
as a parameter.
• Material properties are parameterized in the
engineering data application.
Example of output parameters
Example of input parameters
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Introduction to ANSYS Mechanical
L9-10 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training MaterialC. Using the Parameter Workspace
• Workbench Mechanical uses the Parameter Workspace to manage
parametric data from analysis and geometry sources.• Derived parameters and constants can be created and managed as
well.
Double click or “RMB > Edit” the
“Parameter Set” to access
parameters.
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Introduction to ANSYS Mechanical
L9-11 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Using the Parameter Workspace
• Parameter information is presented in a series of tables.
– Outline: lists all input, output or derived parameters.
– Property: lists information regarding the parameter highlighted in the
outline.
Table of Design Points: allows multipleparameter configurations to be
prepared before solving
Outline
Table of DP
Properties
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Introduction to ANSYS Mechanical
L9-12 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Using the Parameter Workspace
• Example using design points: A CAD
dimension has been promoted to a WB
input parameter.
• The stress in a particular region of the model is
promoted as an output parameter.
• The mass of the geometry has also been
promoted to a parametric output.
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Introduction to ANSYS Mechanical
L9-13 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Using the Parameter Workspace
Example . . .
• Opening the parameter
workspace, the parameters can beseen in the outline.
• In the table of design points 3
new values are added to the
current CAD parameter value.
• From the top menu “Update
All Design Points” is
selected.
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Introduction to ANSYS Mechanical
L9-14 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Using the Parameter Workspace
Example . . .
• The progress of the updates is
reflected in the table.
• With updates complete variouscharts can be created to investigatethe data.
Stress vs Fillet
Radius
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Introduction to ANSYS Mechanical
L9-15 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material… Using the Parameter Workspace
• Additional processing in the parameter workspace:
• Parameter Parallel Chart shows configuration of all parameters per DP
Vertical (Y) lines
represent parameters
(P1, P2, etc.).
Horizontal, colored lines
represent design points.
DP3
DP0
DP2
DP1
Each XY intersection provides a snapshot of all
parameters for a particular DP
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L9-16 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material… Using the Parameter Workspace
• By highlighting parameters, different chart configurations can be selected.
With P1 highlighted notice the chart options
are with respect to this parameter.
After selecting (double click) the desired
chart, the outline can be configured for
display.
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Introduction to ANSYS Mechanical
L9-17 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Using the Parameter Workspace
• As charts are created they are stored in
the outline window and can be retrieved
by highlighting them.
• Using a RMB in various areas of the
chart users can “Edit Properties . . .” tocontrol colors, styles, symbols,
interpolation type, etc.
• Legend, line display, background, etc..
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Introduction to ANSYS Mechanical
L9-18 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training MaterialD. Updating CAD Parameters (From CAD)
• Update From CAD (Project Schematic):
–
After modifying the CAD geometry you will need to RMB and “UpdateFrom CAD”. This will update the Mechanical geometry to match the CAD
system.
– Doing an “Update”, causes new geometry to be remeshed in Mechanical.
• Note, you can simply “Generate” the mesh in Mechanical as well.
• To allow bi-directional parametric
exchange the CAD parameters must be
promoted.
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Introduction to ANSYS Mechanical
L9-19 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Updating CAD Parameters (From Workbench)
• With CAD parameters promoted, they can be managed in the Parameter
Set section of Workbench.
• Values modified, description added, expression entered, etc..
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Introduction to ANSYS Mechanical
L9-20 ANSYS, Inc. Proprietary
© 2010 ANSYS, Inc. All rights reserved.Release 13.0
November 2010
Customer Training Material. . . Updating CAD Parameters (From Workbench)
• If CAD Parameter Changes are made in WB:
• Refresh Project: causes CAD and Mechanical geometry
to update but does not re-mesh the FE model.
• Update Project: CAD and Mechanical models update
and the FE model is re-meshed.
• Notes on geometry updates:
– The magnitude of loads remain constant:
• Thus if pressure was applied on a surface and the surface area changes, the
pressure value remains the same but the total force applied will change.
– The orientation of loads will not change:
• If a load direction is specified using existing geometry, the direction of the
load wi l l not change if the geometry changes.
I d i ANSYS M h i l
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L9 21 ANSYS, Inc. Proprietary Release 13.0
Customer Training Material
• Workshop 9.1 – Parameter Management
• Goal:Use the Workbench Parameter Workspace to setup multiple scenarios to
explore structural responses in the bracket shown. Material thickness
will be varied in the gusset with the bracket thickness held constant
then the process will be reversed.
E. Workshop 9.1 – Parameter Management
http://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.ppthttp://localhost/var/www/apps/conversion/tmp/Workshops/WB-Mech_120_WS_09.1.pptRecommended