I think you mean modal analysis. That is most easily available in ADAMS/Vibration. I doubt you can do stress and strain analysis because the flexible part is represented by an MNF file. I could be wrong, I have done neither. The usual process which is what I used to do is to write the forces out from ADAMS, as time histories, and then apply them to the FEA model in a proper FEA program.
Cheers
Greg Locock
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