modal participation factor 2

[bhineka]

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

 

[electricpete]

I am not familiar with that exact term. There is a good discussion of modal analysis at:

http://www.sdrl.uc.edu/ucme662/ucme662.html

 

[GregLocock]

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

 

[anands78]

http://www.engnetbase.com/default.asp

search for modal participation factor.

 

[hacksaw]

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