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Prestress elements in a nonlinear analysis?

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sam2445

sam2445

Mechanical
Oct 15, 2019
1
Hello,

I was wondering how I can induce a state of stress i.e. prestress in my elements in a nonlinear analysis (MSc Nastran v.2018). the idea is to start my run with an initial value of axial stress already present in the elements and with zero displacement.

I am looking into the ISTRESS card in sol400, but still dont know how to utilize it. if anyone has a deeper understanding of this or of another way, please share

thanks
 
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you can apply prestress as temperature load case ...
temperature decrease has the same effect as prestress
 
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