Hi

You can try using a spectrogram to provide amplitude-time-phase.

https://en.wikipedia.org/wiki/Spectrogram

Have fun

Claes

thank you sir for your reply but I forgot to mention ansys workbench

Hi

As a rule, FE/CAE software is not very good at signal analysis.

Just export your time signal and chew it in any software capable of producing a spectrogram, e.g. Matlab, Gnu Octave, Python etc.

Sincerely

Claes

Thank you so much sir

Hi

you can perform transient analysis by ansys and extract your transient signal.

now you can import your signal in numerical software like matlab and use one of modal parameter extraction methods.