Hi everyone,

I just constructed a VUMAT which including 3 state dependent variables ( nstatev =3 ), let say these three state dependent variables each have a initial value of 10, 20 and 30, may I know how to assign these initial values into the simulation or VUMAT?

So far I follow the manual to assign the initial value via input file with material properties command as below (the line started with "*Initial Conditions" is line 361):

** MATERIALS
**
*Material, name="USER MATERIAL"
*Density
6114.,
**
*User Material, constants=1
432.,
*Depvar
3,
*Initial Conditions, Type=Solution
10, 20, 30
**

However, when I run the simulation I get the error below in DAT file:

PROCESSING PART, INSTANCE, AND ASSEMBLY INFORMATION

*******************************************************

***ERROR: in keyword *INITIALCONDITIONS, file "inisv.inp", line 361: Unknown part instance name 0

***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO INTERPRET SOME DATA. SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION

END PROCESSING PART, INSTANCE, AND ASSEMBLY INFORMATION

***********************************************************

Can anybody tell me what is the problem with my setting and how to actually assign intial values to state variables in an VUMAT?