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Design Objective - Normal Modes dialog box

Modeling Object
Name Sets a unique name for the design objective.
Label Sets a unique integer for the modeling object.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.
Properties
Description Sets a description for the design objective.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.This description appears only on this dialog box.
Response Definition Response LabelSets the design response identifier to write to the .f06 file when you solve the solution.This label must begin with an alphabetic character.Response TypeSpecifies the response that you want to minimize or maximize.This list displays only responses that are appropriate for a normal modes subcase.Normal Modes Mode NumberSets the number of the normal mode whose response you want to minimize or maximize.Approximation CodeSpecifies whether to use direct or inverse linearization.
Optimization Method Specifies the goal of the design objective.MAXMaximizes the selected response.MINMinimizes the selected response.
Card Name Displays the names of the Simcenter Nastran bulk entries that will be generated when you solve the solution: DESOBJ and DRESP1.
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Create the design objective for topology optimization

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Design Objective - Normal Modes dialog box, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1497548 · retrieved 2026-07-17