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Bolt beam Preload NL SOL 106 export Autodesk Nastran

 Hi everybody,

 

I have a problem with bolt preload export in autodesk Nastran.

In a linear elastic analysis I don't have any problem to export this value but, when I export the same model in a non linear analysis (NON LINEAR MATERIAL MODEL ELASTIC-PLASTIC WITHOUT HARDENING) the bolt preload key are blank.

I also try to paste these card from linear analysis but I this load is not considered.

 

How can I solve this problem?

 

Best regards

Stefano