Modal Mass Participation ratio

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Samra
Posts: 24
Joined: Thu Oct 01, 2015 8:18 pm
Location: neduet

Modal Mass Participation ratio

Post by Samra » Fri Dec 15, 2017 3:59 am

Dear fmk,
is it possible to get modal mass participation ratios after an eigen analysis?
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selimgunay
Posts: 913
Joined: Mon Sep 09, 2013 8:50 pm
Location: University of California, Berkeley

Re: Modal Mass Participation ratio

Post by selimgunay » Fri Dec 15, 2017 11:54 am

You need to record the mode shapes and print the mass matrix. Then you can compute the modal mass participation ratio and any other quantity by post-processing. please let me know if you have any questions about the details.
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Farid
Posts: 23
Joined: Thu May 05, 2005 11:10 am
Location: University of California, Los Angeles

Re: Modal Mass Participation ratio

Post by Farid » Fri Jun 03, 2022 8:39 am

Hi Selim

I have extracted mass matrix and mode shapes. How can I find the equation number corresponding to nodes' DOFs of mode shapes? Please advise.
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jeenamax
Posts: 1
Joined: Fri Jun 03, 2022 9:41 am

Re: Modal Mass Participation ratio

Post by jeenamax » Fri Jun 03, 2022 9:43 am

You need to record the mode shapes and print the mass matrix.
https://hmp3.in/
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