Dear all
I am working on a problem where I have used UMAT for defining Jacobian, I need to find the coordinates and volume of Integration points in the model. If I am not wrong, using GETVRM in USDFLD we can get properties of Integration points.
Can we use both UMAT and USDFLD in single subroutine??
I got struck in defining dependencies (since I don't require any field variables for my case, as I have already defined material properties and state variables in UMAT).
Error:
error #6591: An automatic object is invalid in a main program. [FIELD]
DIMENSION FIELD(NFIELD),STATEV(NSTATV),DIRECT(3,3),
----------------^
error #6591: An automatic object is invalid in a main program. [STATEV]
DIMENSION FIELD(NFIELD),STATEV(NSTATV),DIRECT(3,3),
Thanks
K Shiva Reddy
Hello
Usually, to tell abaqus to use UMAT, you should define material in General. However, if you want it to use USDFLD, you should add a field in the material definition.
To use the different subroutines in the same mesh doesn't look like possible for me
One of the option you can, you can create a condition on the coordinate and define a Jaccobian that varies with these coordinate
Usually UMAT is more general than USDFLD
Dear Amin
I have gone through that discussion thread already. Still I am unable to rectify my error.
Best wishes
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