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Internal forces in ABAQUS

Internal forces in ABAQUS

Internal forces in ABAQUS

I would like to ask a question about internal forces in section: in ABAQUS, the output results of internal forces in section of beam elements (SF1,SF2,SF3,SM1,SM2,SM3) are obtained based on the local coordinate system. Are these 6 components based on the local coordinate system that was not deformed before the calculation? Or are the six components based on the computed local coordinate system after deformation? If it is based on the result after deformation, how can it be converted into the local coordinates before deformation? Or convert it to a global coordinate system. I found it impossible to implement this conversion directly in ABAQUS CAE. I tried to implement this process, but the results don't seem to be ideal.

RE: Internal forces in ABAQUS

My reply would be the same as here: https://www.eng-tips.com/viewthread.cfm?qid=515169 - if it's not mentioned in the documentation then it's best to just test it on a simple example with large deformation (with Nlgeom on, of course).

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