Parameters of UMAT 1

[Alpha69fr]

Hi all,
I have to use a UMAT subroutine and I'm not really familiar with abaqus, I'm wondering if in the abaqus CAE we can define the parameters of UMAT, what should be these one ?
Thanks all !

 

[xerf]

To use UMAT,

you should define
in CAE -> Property ->Material

Depvar = number of state variables , i.e. NSTATV size of STATEV vector passed to UMAT.

User Material -> material properties which are passed to UMAT via PROPS vector.

 

[Alpha69fr]

Thanks for the reply ! another question is : is there any limitation in the size of the PROPS vector ???

 

[xerf]

I do not know about any limitation. The largest size I saw so far used in a UMAT subroutine is NPROPS=160.

 

[Alpha69fr]

Thanks a lot !!! I have just 39 parameters, so it shouldn't be a problem.