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Using User Subroutine UMAT in abaqus
Iam a new user of abaqus. I have a subroutine written in *.for format. I also have an input file *.inp . Both these programs are in the same folder. When I try to execute the *.inp file using the command
abaqus job=jobname datacheck interactive
I get a message saying "Abaqus/Standard Analysis exited with an error. please see the message file for possible error messages". I looked in the message file and it says ***ERROR: USER SUBROUTINE UMAT IS MISSING.
Then I used the command
abaqus job=jobname user=umat.for
nothing happens and I am out of the command loop.
Can somebody please help me to understand how things work in abaqus?
Lots of thanks in advance.