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Subject: Re: APDL Calling UPF from input file
Author: Dave Lindeman
Date: 2008-04-14 14:56:17

According to the documentation for USERVP, the subroutine is activated
by using TB,USER to define the material constants, and setting
KEYOPT(1)=1 for the associated VISCOxxx element type(s) (this does not
appear to be noted within the documentation for the VISCOxxx elements).
The subroutine should only be called for the TB,USER material(s) that
are associated with VISCOxxx elements. The MAT reference number can be
used to sort out how different materials should be handled, if necessary.

Note: I've never used this subroutine, so that's about as much help as
I can be.

Regards,

Dave

-------------------------
Dave Lindeman
Lead Research Specialist
3M Company
3M Center 235-3F-08
St. Paul, MN 55144
651-733-6383


BC Deemer wrote:
> Hello All,
>
>
>
> I am attempting to simulate active muscle response. The complete model
> consists of a flexible pipe (blood vessel) with a layer of elements
> surrounding it (making up the circumferential surface) that will represent
> smooth muscles. The smooth muscles will be covered with elements that will
> represent soft tissue. CFX will be used to simulate blood flow through the
> blood vessel and this will be solved as a FSI model.
>
>
>
> These smooth muscles will contract and relax based on a series of
> differential equations. I have modified the uservp.f program to solve the
> differential equations and apply a strain to the elements that make up the
> smooth muscles.
>
>
>
> My question concerns the input file. There will be two materials 1) the
> smooth muscles that surround the blood vessel and 2) the soft tissue that
> surrounds the blood vessel. I need to know how to let the uservp.f file
> know that it should only specify the strain for the smooth muscle elements
> and use passive material properties (ignore uservp.f) for the soft tissue.
>
>
>
> A second question concerns activating the USERVP routine. The USRCAL
> command does not apply to the USERVP routine so how do I activate the
> routine? (I have successfully compiled, relinked and configured the
> software to use the new Ansys.exe.)
>
>
>
> Thank you for any help,
>
>
>
> -BC Deemer PE, MS
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Posts possibly associated with message #92845AuthorDateScore
92830APDL Calling UPF from input fileBC Deemer 2008/04/13 
92838Re: APDL Calling UPF from input fileDouglas Winfield2008/04/14 
92840Re: APDL Calling UPF from input fileBerthold Höllmann2008/04/14 
92845Re: APDL Calling UPF from input fileDave Lindeman2008/04/14