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modal participation factor
2

modal participation factor

modal participation factor

(OP)
Any body can explain :
1. what is modal participation factor
2. how is it used
3. how to calculate it
4. good/simple book that detailed modal participation factor.

Thnaks in advance.

eka

RE: modal participation factor

Which doesn't mention it, sadly.

This pretty much answers your questions:

http://femci.gsfc.nasa.gov/presentations/UAI990304.pdf

It was the 5th hit on google. I strongly suggest you learn to use a search engine before asking here. Some of us are very grumpy bears.

Cheers

Greg Locock

RE: modal participation factor

the modal participation measures the coupling between the exciting force and the given mode shape.

for example, if you have a uniformly distributed excitation force and you want a quantifiable measure of the coupling to each of you modes then modal participation is proportional to the integral of (force) x (mode shape). normalization insures that the maximum value is unity.

Thompson or Weaver are good starting points

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