Some Creo Simulate analysis types require loads and constraints. To help you determine which of these modeling entities your analysis plan calls for, the following tables provide an overview of the load and constraint requirements for the various analysis types.

a. If your model includes point-to-ground springs, you do not need to specify a constraint. For a linear static analysis, if you use the Inertia Relief option on the Static Analysis Definition dialog box, you do not need to specify constraints.

b. If you plan a constrained modal analysis, you need to add at least one constraint. However, for unconstrained modal analyses with rigid mode search, you need no constraints.

c. Buckling analysis uses the loads and constraints defined for the static analysis you select as a basis for the buckling analysis.

d. Fatigue analysis uses the results from a static analysis as the basis for calculating loading.

Return to About Structure Constraints.