Design responses

A design response selects an output such as weight, stress, or displacement. A design objective can minimize or maximize a response. A design constraint can place bounds on a response.

Pre/Post supports only DRESP1 (first-level) responses. The following response types are supported:

WEIGHT	CFAILURE
VOLUME	FRACCL
EIGN	FRDISP
CEIG	PRES
FREQ	FRFORC
LAMA	FRSPCF
DISP	FRSTRE
STRAIN	FRVELO
ESE	RMSDISP
STRESS	RMSVELO
FORCE	RMSACCL
SPCFORCE	TDISP
CSTRAIN	TVELO
CSTRESS	TACCL

The Stress, Strain, and Force responses require an Item Code that specifies the type of element output and the component. For example, linear stress at the center of a CQUAD4 (element code 33), von Mises component at the Z1 fiber location (bottom side of the element) is represented by item code 9. For a list of item codes, see Item Codes in the Simcenter Nastran Quick Reference Guide.

The design response creates a DRESP1 bulk data entry in Nastran.

Where do I find it?

Application	Pre/Post
Prerequisite	A solution of type SOL 200 Design Optimization
Menu	Insert→Modeling Objects→Type=Design Response Quantities

How do I

Control the design optimization output

Create design constraints and responses

Learn more

Simcenter Nastran Design Optimization

Design optimization workflow

Optimization modeling objects

Design objective

Design variables

Design constraints in design optimization

Design optimization results

Optimization spreadsheet

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Design responses, Simcenter 3D 2021.1 Series

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