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Author: cessna
Time: 08/15/07 11:46 PST
This is a reply to message no. 19014 by tracylam
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Current Topic:
Resonance

TRACYLAM:  Were you at the resonant frequency or near it?  How long did you excite it?  Air and structural damping both have the effect of limiting dispalcement, extending the time to failure, and dissipating energy.   I am assuming you used a sine excitation.  What was the "Q"?   A very high "Q" will cause failure in a short time.  If the "Q" is very low the time to failure can be long. 

Regards

Dave

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