Define Static Offset and Stress Stiffening

These steps describe how to define the attributes of the Static Offset and Stress Stiffening subcases and how to add loads.

Note:

Static offset is applied only within Transient and Quasi-Static events.

Also, before you can solve static subcases, the model must be constrained so there are no rigid body modes.

Define subcase attributes

1. In the Simulation Navigator, right-click Subcase – Static Offset or Subcase – Stress Stiffening and choose Edit.

2. In the Solution Step dialog box, in the Description box, type a description for this solution step.

3. If you are adding a Stress Stiffening subcase, click OK to finish defining the subcase attributes. If you are adding a Static Offset subcase, continue to the next step.

4. Next to Output Requests, click Create Modeling Object .

5. In the Structural Output Requests dialog box, add the appropriate result types for your subcase. For more information, see Defining the Simcenter Nastran solution.

6. You can add nodal temperature properties from a previous thermal solution as a preload boundary condition. Under Pre-Load Type, select the type of thermal solution to use. For example, select Nastran Temperatures if your temperatures were solved in a Nastran solution.

7. If you chose a Pre-Load Type in the previous step, enter the path to your preload results file in the Pre-Load Results File box. This file should contain the nodal temperatures calculated in your previous thermal solution (for example, for Nastran, this will be an OP2 results file). The solver will use these temperatures with this solution step.

8. Click OK to dismiss all dialog boxes.

Add loads to the subcase

1. In the Simulation Navigator, right-click the Loads node under the subcase you are defining and choose New Load and then choose the type of load to add to the subcase (for example, a Force, Moment, Bearing, and so on).

2. Define the load. For example, for information about defining a force load, see Force load.

Note:

After you solve the solution and create an event, a Static Offset node appears under the event node to represent the static offset results. If desired, you can deactivate the static offset load in your response evaluations by clearing the check box or by right-clicking this node and choosing Deactivate.

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Define Static Offset and Stress Stiffening, Simcenter 3D 2021.1 Series

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