Size Panel

Use the Size panel to define design variables and properties for size optimization.

Location: Analysis page > Optimization panel
Note: Only available in the OptiStruct solver interface.

Desvar Subpanel

Option Action
desvar = Specify a name for the new design variable, or click the button to select an existing design variable to update.
initial value = Specify the initial value for the design variable.
lower bound = Specify the upper boundary for the design variable.
upper bound = Specify the lower boundary for the design variable.
move limit default / move limit = Choose how the movement limit is determined. If you select move limit =, you must specify a limit value.
no ddval / ddval = Choose whether or not to use a discrete design value.

If you choose ddval =, click the button to select an existing ddvals.

Generic Relationship Subpanel

Option Action
name = Specify a name for the new relationship, or click the button to select an existing relationship to update.
C0 = Specify the constant value in the relationship.
by entity /global ply This option affects whether the options directly adjacent to it is a switch or a numeric box.


Figure 1.
The selectable entity types are elements, properties, materials, and plies. When switched to global ply, you instead simply specify the ply number. A new switch for thickness/orientation displays below.
thickness / orientation Thickness of the ply/orientation of the ply.
designvars Select the related design variables.

Function Relationship Subpanel

Option Action
name = Specify a name for the new relationship, or click the button to select an existing relationship to update.
C0 = Specify the constant value in the relationship.
by entity /global ply (switch) This option affects whether the options directly adjacent to it is a switch or a numeric box.
Figure 2.
The selectable entity types are elements, properties, materials, and plies. When switched to global ply, you instead simply specify the ply number. A new switch for thickness/orientation displays below.
thickness / orientation Thickness of the ply/orientation of the ply.
dequation = Select the design equation definition.

Command buttons

Button Action
create Create the new design variable or relationship.
update Update the existing design variable or relationship to use the current input settings.
review Click this button to select an existing defined design variables or relationships and display its values in the input fields.
edit
Note: Available in the Function Relationship subpanel.
return Exit the panel.