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During FRF Analysis , what is the theory or reason behind by assuming damping % ( For example 0.04% to 0.07%) in TABDMP1 card????
Hi Arul,
Do you have any reference for the assumption you are talking about?
No reference sir..
Arul,
I think modal damping depends on the critical damping of the structure and damping coefficient and it may vary from 0.01 to ~0.2
Please refer to any books which deals with modal analysis and modal damping.
Thank you..
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