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Vibration Analysis

Question asked by Ken Brown on Jul 20, 2010
Latest reply on Jul 28, 2010 by Michael Feeney

I am trying to do a vibration analysis on a sheet metal structure and I can't figure it out.  I am only somewhat familiar with vibration analysis in general and this my first time running one in Solidworks so bear with me if I say something that doesn't make sense.

 

I have an acceleration vs frequency curve that I was able to enter.  I understand that I have to run a mode analysis first and then run the stress analysis.  There are to things that are not making sense to me.

 

1.  It seems that when it calculates the stress, it gives me results for the stress for each frequency/mode.  Don't I really need the stress created by the vibrations at all the frequencies at the same time?

 

2.  The real life test we will eventually run will have the structure being shaken for 30 seconds.  Is there anyway to factor time shaken into the analysis?

 

I appreciate any insight anyone can offer. 

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