OptiStruct can output a key performance indicator (KPI). It is a fast way to understand the maximum stress, strain, plastic strain, and displacement for subcases using a text file. This is useful for a quick summary of the results of a linear or nonlinear static analysis.
Prerequisite: Set up a linear or nonlinear static analysis for OptiStruct.
The card OUTPUT, KPI will be added to the .fem deck:
OUTPUT, KPI
$DISPLACEMENTS
$SUBCASE ID = 1
PID GID MAG GID X GID Y GID Z
2 86509 1.42556E+02 85952 -5.56632E+00 81295 -4.11947E+01 86506 -1.41372E+02
3 97892 1.37000E+02 94860 -2.02766E+00 97896 -3.43035E+01 97913 -1.32917E+02
$ELEMENT STRESSES
$SUBCASE ID = 1
PID EID VON XX/XX_1 YY/XX_2 ZZ/YY_1 XY/YY_2 YZ/XY_1 XZ/XY_2
2 283248 1.58787E+03 1.52330E+03 -1.65572E+03 7.92633E+02 -4.85530E+02 5.09915E+02 -1.22884E+02
3 294264 7.89146E+02 1.83666E+02 -4.08931E+02 4.40135E+02 -7.87480E+02 5.34369E+01 2.29076E+02
$ELEMENT STRAINS
$SUBCASE ID = 1
PID EID VON XX/XX_1 YY/XX_2 ZZ/YY_1 XY/YY_2 YZ/XY_1 XZ/XY_2
2 283248 5.16981E-03 6.12147E-03 -7.19075E-03 1.59830E-03 5.32597E-05 6.31323E-03 -1.52142E-03
3 294264 2.50579E-03 2.45837E-04 -8.22320E-04 1.83350E-03 -3.16572E-03 6.61600E-04 2.83618E-03
In this KPI file, the results are written out by property for subcase 1. In a nonlinear analysis with material nonlinearity, plastic strain data would be added as well. For shell and solid elements, stress and strain will be output.
Next Steps:
For further reference, you can review OUTPUT options in the OptiStruct Reference Guide.