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Subject: Re: Superelement in ANSYS/Substructuring
Author: K.S. Raghavan
Date: 2001-01-30 22:41:00

Hello ,

To me it appears that Stephane's problem is solved by resorting to
sub modelling rather than the use of Superelements.

Cheers .. raghavan (BHEl , Hyderabd , INDIA)

Mark Rodamaker wrote:

> 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 -----
> From:
> To:
> Sent: Tuesday, January 30, 2001 3:00 PM
> Subject: [xansys] Superelement in ANSYS/Substructuring

> > 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 #20659AuthorDateScore
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