Create a design constraint for a design sensitivity analysis

The following procedure creates a design constraint and adds it to an existing solution or subcase. To create a design constraint without adding it to a solution or subcase, use the Modeling Objects command.

If you do not create a design constraint for the solution, you must create one for each subcase in the solution.

1. In the Simulation Navigator, under an active design sensitivity analysis (DSA) solution or subcase, right-click the Design Constraint node and choose New Design Constraint.

2. In the Name box, type a unique name for the design constraint, or use the default name.

3. In the Label box, type a unique integer for the modeling object, or use the provided one.The dialog box automatically displays the next available modeling object number. However, you might want to change this if you use a particular series of numbers to identify certain types of modeling objects.

4. (Optional) In the Description box, type a description of the design constraint.You can also click Description to open the Description dialog box. This lets you see more of the text that you type, as well as cut, copy, or paste text.

5. If you are creating a solution-level design constraint, from the Definition Method list, select Standard or Advanced.If you select Standard, any weight response is assumed to be in the Z-direction, indicating that there is no directional mass. If you select Advanced, you can specify the direction of the mass.

6. In the Response Label box, type a unique design response identifier, or use the provided one.This label must begin with an alphabetic character and cannot exceed eight characters.

7. From the Response Type list, select which aspect of the model to analyze for sensitivity.The options that appear in this list vary, depending on whether you are creating the design constraint for a solution or a subcase, and the subcase type.Depending on the selected response, other options might appear on the dialog box. For example, if the design constraint is for normal modes, you are prompted to specify the mode number. For more information about design constraint options, see the following topics:Design Constraint - Global dialog boxDesign Constraint - Normal Modes dialog boxDesign Constraint - Modal Frequency dialog boxNote: If you select elements in the graphics window, be sure to select only elements of the appropriate type. For example, if Element Dimension is set to 1D and Element Type is set to CBEAM, you can select any 1D element, even if it is not a CBEAM element.If you select elements that are not the appropriate type, the solver might use unintended responses from other elements for which the response item code is still valid.The options in the Limits group do not apply to DSA.

8. Click OK.

Create a design constraint for a design sensitivity analysis, Simcenter 3D 2021.1 Series

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