Hello,
I have written a UMAT subroutine but when I run the code it runs and completes successfully. I am using C3D8 elements. The subroutine is working fine, as the job completes successfully. However, when I try to see the results from the ODB file I get the following message error:
“The selected Primary Variable is not available in the current frame for any elements in the current display group.”
Could this be because there is something wrong in my subroutine? I will appreciate your input. Please see the UMAT file attached.
I have tried to select the stress, strain and magnitude and all not available.
I have tried to run the input file with an in-built material model (say, linear elastic) and I did not encounter the same issue. Everything was OK.
It could be a single/double precision issue with the real valued variables. You should include the appropriate 'ABA_PARAM.INC' with your UMAT to avoid this type of problem.
If you define a UMAT subroutine, you can only access to the variables define in the subroutine, that is to the State Variables. That means that if you need to obtain stress or strain values, you have to define them in the UMAT subroutine.
Hi Miss Geramian.
Yes, I solved it. As Dr. Mareau mentioned, I included the appropriate 'ABA_PARAM.INC' with my UMAT. And Everything was O.K.
Hi Mr. Bayat
I dont understand his mention. Can you explain it for me?
Add this "INCLUDE 'ABA_PARAM.INC' " immediately after subroutine.
Make sure the 'ABA_PARAM.INC' file is in the same folder as the UMAT fortran file and try to compile the UMAT to ensure no programming mistake is left.
Hi Dr. Mareau
How can I sure the 'ABA_PARAM.INC' file exist in my computer or not?
I have just wrote "INCLUDE 'ABA_PARAM.INC'" in my subroutin.
The 'ABA_PARAM.INC' file is necessarily included with your ABAQUS installation. In my installation (Abaqus 6.10-1+UNIX), those files are located in the following directory :
"..../ABAQUS/6.10-1/site/"
In this directory, you will find the 'ABA_PARAM.INC' files for different configurations (simple precision=SP, double precision=DP).
what is the appropriate ABA_OARAM.INC........ one is the single precision and the other is double precision...
Add this "INCLUDE 'ABA_PARAM.INC' " immediately after subroutine.
Same error now. Do most advices upwards, but no settle.
Would you like to share your subroutine?
Thank you!
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