Dear all,
I am writing the Abaqus' output such as stress and strain in a text file. I need to use these as training data. However, the results are repeated and given different set of data because of the differences in the number of iteration.
In the text file I can have the number of elements, increment number and variables but I need the number of iteration as well?
Does Abaqus in Umat output give me just the last iteration?
The attached texts show the data is repeated twice for on iteration and triple for two iterations? (Number of element = 15)
Could you please advise me ?
Best regards
The output is repeated because the UMAT is called on each attempt in an increment, due to the Newton iteration Abaqus uses to solve the calculation from dt to dt+1.
For controlling output, the subroutine UEXTERNALDB may be a better choice.
Thanks Baeker for your comment,
Please,it can be seen from the attached text files that the data is repeated for one iteration (twice) and for two iteration( triple), although there is no difference in the repeated data ?
Also, the output of Abaqus produced in the last iteration only or at each one ?
Could you explain why that happens?
Best regards
Look at the msg-file or the sta-file to see how many attempts are made per increment.
Somewhere in the manual there is an explanation of when the UMAT is called, this should then tell you exactly what happens here.
In any case, for output, an UEXTERNALDB is probably the routine of choice.
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