UMAT System error 2

[knitankit]

Hi,

I am getting an error at the very first step and the analysis gets terminated.

***ERROR: System error 2 in std_OperatorWorkSpaceManager::DeAllocate: An
underwrite was detected for element operator work space ID= 13,
offset=-1, value=0.000000e+00.

Can you please help me in debugging this error?

Thanks and regards

[Hcham]

i hade this some things like that ,
chane the section make it solid homogenous and create a set whitch refer to the geometrie
and asign the section using set
i dnt know wat model 2d or 3d or?
but i hade this error in 2d and i solved it like a above.i which its helpfull

[knitankit]

HI,
I had a different reason for this error. It was totally numerical. I had an exponential term which was decaying to zero (FORTRAN limitation) and leading to a math error.

I really appreciate you response.

Thanks and regards,
Ankit