Create the Analysis Cases

Create the global and submodel analysis cases.

Analysis cases combine the geometry model and the simulation model. In addition, an analysis case allows you to define scenario information, such as initial conditions, forces, and restraints.

In this example, you create a global analysis case and a submodel analysis case. You define the scenario information that pertains to each analysis case type later in the example.

This task shows you how to:

Create the Global FEM Analysis Case

  1. From the Compass, click Mechanical Scenario Creation.
  2. Select Structural as the simulation type, and click OK.
    The app creates a simulation.
  3. From the Setup section of the action bar, click Simulation Properties .
  4. Enter EXAMPLE-Driveshaft-Subassembly as the Title, and click OK.

    Renaming your simulation allows you to identify it easily when you search for it.

  5. Right-click the 3D area, and select Assistant from the context menu.

    The Assistant guides you through creating and running your simulation. It lists commonly used commands and indicates whether your simulation meets the minimum requirements to run. All commands listed in the Assistant are also available in the action bar.

  6. From the tree, right-click Structural Analysis Case.1, rename it Global Analysis, and click OK.
  7. From the Setup section of the action bar, click Finite Element Model .
  8. Select Global FEM, and click OK.
  9. From the Procedures section of the action bar, click Static Step .

    Procedures define the type of analysis to run. A static step indicates that no motion is expected; all forces and restraints on the model cancel, resulting in internal stress only.

  10. Use the following settings to define the step:

    • A step time of 1s
    • A maximum of 10,000 increments
    • Automatic time incrementation
    • An initial time increment of 1e-007s
    • A minimum time increment of 1e-010s
    • A maximum time increment of 1s

  11. Select Damping for the Stabilization type, and include a Damping factor of 2e-004.
  12. From the Advanced section, select Geometric nonlinearity.
  13. Click OK.

Create the Submodel FEM Analysis Case

  1. From the Setup section of the action bar, click the arrow to the right of Create Analysis Case, and select Submodel Analysis Case .

    The submodel analysis case is a child of the global analysis case you created earlier. As a result, there are no changes required to the submodel case because the settings are identical.

  2. Rename the analysis case Submodel Analysis, and click OK.
  3. From the Setup section of the action bar, click Finite Element Model .
  4. Select Submodel FEM, and click OK.
  5. As you did for the global analysis case, create a static step for the submodel analysis case.