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Recent content by Manuel Costa

  1. Manuel Costa

    Calling third deviatoric invariant in VUSDFLD subroutine

    So, I came up with a brick wall when creating a field variable with third deviatoric stress tensor invariant , J3, dependency. The closest approach should be calling this invariant with subroutine SINV (Abaqus subroutine reference guide), but I don't understand why this invariant is not...
  2. Manuel Costa

    how to see the results from vusdfld

    You should always run (as I have experienced) abaqus subroutines through command prompt, with 'abaqus job=jobname.inp user=subroutine.f(or .for) interactive datacheck', if it gives you errors, it should be easily detected, if it shows THE ANALYSIS HAS COMPLETED, and your results are still zero...
  3. Manuel Costa

    VUSDFLD - successful datacheck, error during analysis

    So, I re-wrote the subroutine and apparently fixed it. ONE TIP FOR GUYS WHO ARE TRYING TO GET INTO ABAQUS SUBROUTINES: Don't trust all the examples put into the verification guide and subroutines contained in the files, they are not good for learning purposes. You should start with the basics...
  4. Manuel Costa

    VUSDFLD - successful datacheck, error during analysis

    yes, the input file contains *user defined field and *depvar options written.
  5. Manuel Costa

    VUSDFLD - successful datacheck, error during analysis

    I tried to run it without subroutine, and it seems to be running fine. although, something about that .dat file bothers me. it says: ***WARNING: THE *USER DEFINED FIELD OPTION HAS BEEN USED, BUT THERE ARE NO USER-DEFINED FIELDS ACTIVE IN THE MODEL. USER-DEFINED FIELDS MAY...
  6. Manuel Costa

    VUSDFLD - successful datacheck, error during analysis

    Hello guys! So, I've been facing a wierd error during explicit analysis with a VUSDFLD subroutine. So long I've trying to define my displacement at failure in '*Damage Evolution' as a function of a field variable. As running the datacheck with a subroutine VUSDFLD, the datacheck shows...
  7. Manuel Costa

    Abaqus scripting - Lode Angle

    Hello, guys! I've been trying to write a script to express the Lode angle (Polar deviatoric angle), as defined here: Ductile damage criterion wit lode angle dependance (Abaqus Analysis User's Guide). Shortly I'd like to express the variable defined in the link, ξ (in range of -1<ξ<1) in a...
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