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How is this possible in ABAQUS?
I am trying to run UHYPER in ABAQUS 6.9EF1. I have the following questions:
1) How can I get the nodes
ID associated with element# NOEL in UHYPER subroutine?
2) How can I get the
coordinates of the displaced nodes associated with element# NOEL in UHYPER
subroutine in the middle of the simulation? I tried to use GETVRN but it seems it does not work in
UHYPER.
3) How can I get the deformation gradient tensor using
GETVRM for element# NOEL in UHYPER? I have also tried using USDFLD and
GETVRM but it returns zero for everything.
4) If I have a strain
energy potential which is related to pseudoinvariant and invariant of
right Cauchy Green Strain tensor, how does ABAQUS treat this using
UHYPER? Because all the derivatives in UHYPER is with respect to the
invariant of deviatoric strain tensor.
I would really appreciate it if someone could help me. I have a deadline for submitting my results in my paper to a journal 
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- Ahmad Falahatpisheh's blog
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Comments
have you solved the problem?
hello, friend. have you solved the problem? i am facing the similar question. and for the first problem, to get the nodes ID associated with element# NOEL, i tried this way. put the node information associated with your interested elements in a exteral file, read it in an array and filter the array. though it seems a liitle clumsy, it works.
and i have some problems to get your help, when i use the subroutine GETVRN, there's a dummy array JGVBLOCK i have to define. how can i get the value?
many thanks.