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Freq. resp analysis

Hi,

I want to do a frequency response analysis of my component and I would like to see in output the stress in a set of nodes I created.

To do that i've gone in control cards panel, I selected GLOBAL_OUTPUT_REQUEST, but I don't know which field I have to select to have stresses in output, in fact there's CSTRESS, GPSTRESS and STRESS and I don't know which one I have to choose. After that what I have to do with the fields thata appear (FORMAT, FORM...)?

Can someone help me?

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Nachiket Kadu_22143

Hi @mabefa

You need to use GPSTRESS to calculate nodal stress results. For ouput you may use OPTI under glogal O/P requests. Make sure to write O/P files for H3D and Opti under Output tab of Global O/P requests. For output format in detail, i request you go through tutorial for frequency response analysis under tutorials.

mabefa

So I have to set H3D in FORMAT panel in GLOBAL_OUTPUT_REQUEST for GPSTRESS, and then I have to go in OUTPUT panel and select OPTI in KEYWORD panel.

Is it right?

Rahul Rajan_21763

You can refer below online tutorial from OptiStruct.

OS-T: 1300 Direct Frequency Response Analysis of a Flat Plate

You can also download recently released free ebook on OptiStruct Dynamic Analysis using below link.

https://altairuniversity.com/free-ebook-learn-dynamic-analysis-with-altair-optistruct/