View Full Version : Help on umat
Hi. I have got an old umat file and I am trying to run it. It seems working fine and I got the result of those field output variables defined in ABAQUS input file. However, I did not get any state dependent variables defined in umat file. Could somebody help me to figure out what's going on here? I am not an expert on ABAQUS and I know this might be a trival problem to you.
You can plot state variables as a field output if you first save them to the odb-file by specifying SDV as an output field variable in the input file (or in CAE).
I have specified E, S, SDV in input file and it is still running without yielding any of the above results.
I specified sdv for field output. But I got a warning message in DAT file:"WARNING: DATABASE OUTPUT IS NOT CURRENTLY AVAILABLE FOR COMPOSITE SOLIDS. " My element type is C3D8, is there any problem with this?
If you are running a simulation that is using a UMAT and you specify a SDV as an output variable, then I would think you should be able to create a contour graph of the state variables. I have not heard of that warning message before. Do you know what the "COMPOSITE SOLIDS" part is referring to?
Solid composite is one kind of element for composite materials. Abaqus dose not support output SDVs defined on element to .odb. The only thing I can do now is try to use postprocessing techniques to either access .fil or combine .fil with .odb. Abqaus tehcnicians have provided me a buntch of codes to write .fil to .odb. However, I still have some problems to compile them. To be exactly, I can compile them but not able to link them. If I have solved issue, I would like to post them up.
Are you saying that "Solid composite" is an element type in ABAQUS, like C3D8R is an element type? I don't quite follow :confused:
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