Is this possible ?

[caemagic]

HEy guys ,

Let's I have an SDOF system , and I would like to know thw dynamic stiffness of this system , is the FRF enough ? , how to compute dynamic stiffness from FRF ? Thank you

caemagic

 

[GregLocock]

Your FRF is probably in units of m s-2 N-1. Stiffness is units of N/mm. So you need to integrate it twice in the frequency domain and invert it.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[amanuensis]

The dynamic stiffness of a SDOF is just ... K regardless the frequency (K is the spring value of the SDOF)

 

[GregLocock]

No it isn't. See my post. Now, that may be a terminology issue.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?