Creo Topology Optimization > Optimization Setup > Design Constraints > To Create a Strain Design Constraint
  
To Create a Strain Design Constraint
1. Click Home > Design Constraint. The Design Constraint dialog box opens.
2. In the Name box, type a name for the design constraint.
3. To change the color used for the design constraint, click , and select a color in the Color Editor dialog box.
4. To define the physical feature to use as a constraint, in the Response type box, select Strain (STRAIN).
5. To define the type of strain, in the Response component box, select an option.
6. To define the portion of the model to which the design constraint applies, click the Constraint target collector, and then select surfaces, volumes, or components.
7. To exclude regions from the design constraint, click the Excluded regions collector, and select volumes, points, edges, or surfaces to exclude.
8. To select analyses that correspond to the design constraint, in the Analysis box, click the arrow, and select the check boxes of the analyses to include in the design constraint.
9. Under Constraint Bounds, type a value for Lower Bound and Upper Bound.
10. Select an option for Bound Type:
Actual—Use the actual value as the constraint bounds.
Scale of initial—Use a percentage of the initial response value as the constraint bounds.
11. Click OK.