Condensed Degrees of Freedom

Forum for OpenSees users to post questions, comments, etc. on the use of the OpenSees interpreter, OpenSees.exe

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ospinag
Posts: 23
Joined: Fri Jul 30, 2010 7:51 am
Location: University of South Carolina

Condensed Degrees of Freedom

Post by ospinag »

Hello..

I'm trying to run a model with a large number of degrees of freedom (I have 4190 nodes). Is there a way to condense desired degrees of freedom in such a way that I can run a dynamic analysis in a short time? Currently I'm trying to run a dynamic loading situation, where a load takes 3 seconds to run over 256 nodes and when using the neeshub, the analysis takes about 16 hours.

Any help here is appreciated. Thank!
vesna
Posts: 3033
Joined: Tue May 23, 2006 11:23 am
Location: UC Berkeley

Re: Condensed Degrees of Freedom

Post by vesna »

I hope that you use one of the sparse solvers. If your analysis last for such a long time you may consider running it through OpenSees parallel.
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