Use the Topography panel to define design domains for topography optimization.
Subpanels and Inputs
The Topography panel contains the following subpanels and command buttons:
For information on topography design variables, see DTPG in the OptiStruct online help.
Panel Inputs
Input
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Action
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desvar
|
Enter a name for the design variable.
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props
|
Select one or more properties of the selected type.
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Panel Inputs
Input
|
Action
|
desvar
|
Enter a name for the design variable.
|
props
|
Select one or more properties of the selected type.
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Panel Inputs
Input
|
Action
|
desvar
|
Name for the design variable.
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minimum width
|
The width of the bead at its apex.
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draw angle
|
The angle of the bead’s sloped sides.
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draw height
|
The height of the bead compared to its parent surface.
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buffer zone
|
When off, an unperturbed node in the non-design region can be directly adjacent to a node in the design region which is at full bead height. This can lead to mesh quality problems.
When buffer zone is active, a draw angle will exist between unperturbed nodes in the non-design region and nodes in the design region.
|
draw direction
|
The default draw direction is normal to elements, but you can define a particular draw direction by clicking the toggle and specifying a direction or a vector normal to a plane.
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boundary skip
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This parameter tells OptiStruct to leave certain nodes out of the design domain, to prevent perturbation of nodes where loads or constraints are applied.
| • | None: all nodes attached to elements whose PIDs are specified will be a part of the shape variables. |
| • | spc: any nodes which have SPC or SPC1 declarations are omitted from the design domain. |
| • | Load: any nodes which have FORCE, FORCE1, MOMENT, MOMENT1, or SPCD declarations are omitted from the design domain. |
| • | load and spc: nodes with either ‘spc’ or ‘load’ declarations are omitted from the design domain. This field is only valid if TYPE is PSHELL or PCOMP. |
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Panel Inputs
Input
|
Action
|
desvar
|
Name for the design variable.
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upper bound
|
The upper limit for bead growth will be the Upper Bound value times the bead height.
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lower bound
|
The lower limit for bead growth will be the Lower Bound value times the bead height.
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default initial beadfraction
|
Initial position of the bead.
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Panel Inputs
Input
|
Action
|
desvar
|
Name for the design variable
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master / slave / none
|
Determine whether you are establishing a master coordinate system, a slave design variable, or neither.
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system /coordinates
|
Choose to manually enter the values for the coordinate system, or to graphically select the system.
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global system / local system
|
Reference coordinate system
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anchor
|
Select the anchor node.
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The following action buttons appear throughout the subpanels:
Button
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Action
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create
|
Create the design variable.
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reject
|
Reverts the most recent changes.
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review
|
Review the load in the graphic area.
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update
|
Update the load with the most recent changes.
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return
|
Exits the panel.
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See Also:
Pattern Grouping Options
