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Subject: INISTATE and user material
Author: Daniel Aubram
Date: 2008-05-06 11:57:16

Dear all,

Ansys manual says that an initial stress state for PLANE182 elements can
be established in the first load step when issuing INISTATE command or
upf subroutine USTRESS.

INISTATE works fine for standard linear elastic material. However, I
want to perform an analysis with a user defined material by using upf
subroutine USERMAT, but now INISTATE does not put an initial
stress. The stress array in USERMAT is left blank.

I only changed the material characteristics input considering the user
material but not the keyoption keyopt,1,10,0 (No user subroutine to
provide initial stresses (default)) or anything else. Are there additional
commands or options that have to be considered?

I found nothing in the ANSYS manual referring to this topic. Looks
like INISTATE together with TB,USER is intended to work...

Thank You!

Regards,
Daniel

--
---------------------------------------
Dipl.-Ing. Daniel Aubram
TU Berlin
FG Grundbau und Bodenmechanik - Degebo
Sekr. TIB1-B7
Gustav-Meyer-Allee 25
D-13355 Berlin

www.grundbau.tu-berlin.de
E-MAIL daniel.aubram_at_tu-berlin.de
TEL +49-30-314-72349
FAX +49-30-314-72343
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Posts possibly associated with message #93165AuthorDateScore
93165INISTATE and user materialDaniel Aubram 2008/05/06 
93166INISTATE and user materialDaniel Aubram 2008/05/06 
93178Re: INISTATE and user materialDave Lindeman2008/05/06 
93179Re: INISTATE and user materialGuoyu Lin2008/05/06 
93180Re: INISTATE and user materialGuoyu Lin2008/05/06 
93200Re: INISTATE and user materialDaniel Aubram 2008/05/07 
93201Re: INISTATE and user materialDaniel Aubram 2008/05/07