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***ERROR: USER SUBROUTINE UMAT IS MISSING (Abaqus)

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  • ***ERROR: USER SUBROUTINE UMAT IS MISSING (Abaqus)

    I calibrated a poly u mod hybrid model and attempted to validate the model using the "run a series of FE simulations" that MCalibration has built into its interface. When I click “evaluate”, the simulations fail because the UMAT’s don’t appear to be generated. The following error appears from the abaqus .msg files:

    ***ERROR: USER SUBROUTINE UMAT IS MISSING

    Has anyone come across this issue before?

  • #2
    Is it possible that the software was not installed correctly?

    Can you make sure that your abaqus_v6.env file contains a line with the text "usub_lib_dir"?

    -Jorgen
    Jorgen Bergstrom, Ph.D. PolymerFEM Administrator

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