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Subject: Superelement/Substructuring
Author: Stephane Pierre Bordas spb276@
Date: 2001-01-30 18:29:00

Hello,

For research purposes, my group is thinking of using ANSYS as a tool to
generate superelement stiffness matrices for structural stress analysis.

At this point, we have an I-DEAS model from which we can export a
universal file. There may also be a way in which we could export our model
to an ANSYS compatible format, but this needs to be checked.

Our goal is to isolate a given region of this model, and make a
superelement out of the remainder of the model, whose behavior we are not
interested in. Then, we would use this superelement in conjunction with
another, more refined mesh for the region of interest and run some crack
propagation studies with the code that was written in our department at
Northwestern University.

We don't know much about Ansys, but it seems to us that it would be the
way to go. How feasible does it seem to you ? How would you go about doing
it ? Has any of you already done it ? Where can I find an example of this
kind of study/the format of the superelement file ?
In particular, is it possible to access the stiffness matrix representing
the superelement ?

Thank you very much for your help,

Stephane

Stephane P. Bordas
Ph.D Student in Theoretical and Applied Mechanics
Northwestern University, Evanston, IL, U.S.A

http://www.tam.nwu.edu/sbordas/

"On ne doit appeler science que l'ensemble des recettes qui marchent, le
reste n'est que literature"

Paul Valery.

Posts possibly associated with message #20654AuthorDateScore
20654Superelement/SubstructuringStephane Pierre Bordas spb276@2001/01/30 
20656Re: Superelement/SubstructuringMartin Liddle2001/01/30 
20664Re: Superelement/SubstructuringKim Ravn-Jensen2001/01/31 
20691Re: Superelement/SubstructuringStephane Pierre Bordas spb276@2001/01/31 
20706Re: Superelement/SubstructuringDan Bohlen2001/01/31 
20739Re: Superelement/SubstructuringGerald Jones2001/02/01 
20960Re: Superelement/SubstructuringK.S. Raghavan2001/02/09 
25447Superelement/Substructuring Analysistap_club@2001/06/29