MDOF lumped mass model

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harvie
Posts: 7
Joined: Thu Nov 26, 2020 5:31 am

MDOF lumped mass model

Post by harvie » Fri Feb 26, 2021 6:45 am

Hello everyone!

Any idea on how I model a lumped mass MDOF system with columns represented as shear and flexure springs?

Also, is it required to do first eigenvalue analysis and gravity analysis to capture the response to a time-history analysis?

mhscott
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Joined: Tue Jul 06, 2004 3:38 pm
Location: Corvallis, Oregon USA
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Re: MDOF lumped mass model

Post by mhscott » Sat Feb 27, 2021 6:08 am

Eigenvalue analysis is not required to do response history analysis.

harvie
Posts: 7
Joined: Thu Nov 26, 2020 5:31 am

Re: MDOF lumped mass model

Post by harvie » Sat Feb 27, 2021 8:47 am

mhscott wrote:
Sat Feb 27, 2021 6:08 am
Eigenvalue analysis is not required to do response history analysis.
Thank you for replying, Sir!

How about gravity analysis, is it mandatory before perfoming THA?

mhscott
Posts: 569
Joined: Tue Jul 06, 2004 3:38 pm
Location: Corvallis, Oregon USA
Contact:

Re: MDOF lumped mass model

Post by mhscott » Sun Feb 28, 2021 6:14 am

No

harvie
Posts: 7
Joined: Thu Nov 26, 2020 5:31 am

Re: MDOF lumped mass model

Post by harvie » Sun Feb 28, 2021 7:32 am

mhscott wrote:
Sun Feb 28, 2021 6:14 am
No
Thank you very much, Sir!

Though I have not yet figured out how I can correctly model a structure using a spring-mass system.
I actually posted another topic here: viewtopic.php?f=2&t=68378
Maybe you can give me insights about it, Thank you in advance!

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