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Random Vibration results analysis - how to?

Random Vibration results analysis - how to?

Random Vibration results analysis - how to?

(OP)
Hi

I've run a model of an antenna fairing thru the frequency response and submitted it to the random PSD analysis. I get graphs of certain variables - accelerations, stresses and so forth.

How do I interpert these results? how can I say they are "good"/"bad"/have a certain margin of safety?

I know it's a tall order, but my associate who does the dynamic analysis is abroad, and I have no one else :)

TIA

Jake.

RE: Random Vibration results analysis - how to?

1.  Compare the resulting stress levels to the yield and ultimate stress levels.

2.  Perform a fatigue calculation using Miner's rule.

3.  Compare the acceleration levels with any test levels that the antenna has previously been subjected to and successfully passed.

Tom Irvine
www.vibrationdata.com

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