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VAMAN SHENOY

Clarification on Frequency Response Analysis in OptiStruct

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Ahoy!

 

I was going through the tutorial for FRA in Optistruct using the tutorial file wherein it said I need to free DoF 6 for SPCS. 

 

i would like to know why this particular DoF (Z-Rotational) is chosen to be freed and if there is any relation/ effect if I free or constrain any other DoF for SPC. 

 

Thank You!

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Hi Vaman,

 

I think there will be change in result, never tried but you can request displacement, acceleration for the nodes around and in Z direction to spot the difference. 

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