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Subject: Re: Superelement in ANSYS/Substructuring
Author: Mark Rodamaker
Date: 2001-01-30 18:36:00

Stephanie,
You may be able to figure out how to get at the superelement matrices. As
a novice user, the chance of success is not good. However, superelements
attach to the rest of the structure at specific nodes. It is difficult to
change the node numbering scheme and unreasonable to attempt to change the
mesh density at the interface to the superelelement which is what it appears
you want to do.

Mark Rodamaker
MCR Associates
Sunnyvale,California
voice: 408-736-1636

----- Original Message -----
To:
Sent: Tuesday, January 30, 2001 3:00 PM

> 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

Posts possibly associated with message #20655AuthorDateScore
20651Superelement in ANSYS/Substructuringsbordas@2001/01/30 
20655Re: Superelement in ANSYS/SubstructuringMark Rodamaker2001/01/30 
20659Re: Superelement in ANSYS/SubstructuringK.S. Raghavan2001/01/30-10
20724Re: Superelement in ANSYS/SubstructuringChristopher Wright2001/01/31 
20730Re: Superelement in ANSYS/SubstructuringK.S. Raghavan2001/02/01 
20735Re: Superelement in ANSYS/SubstructuringJason Husband2001/02/01 
20740Re: Superelement in ANSYS/SubstructuringChristopher Wright1991/02/01 
20742Re: Superelement in ANSYS/SubstructuringOsman Buyukisik2001/02/01 
20747Re: Superelement in ANSYS/SubstructuringChristopher Wright1991/02/01 
20768Re: Superelement in ANSYS/SubstructuringK.S. Raghavan2001/02/02 
20783Re: Superelement in ANSYS/SubstructuringChristopher Wright2001/02/02