USDFLD for multiple materials

[sanz88]

Hello all,
I am a beginner when it comes to writing Abaqus subroutine.But looking the Abaqus manual I have written USDFLD subroutine for one material and its working fine.
My question is if we have multiple material models how can I implement in USDFLD subroutine? I have read manual where it is written
IF (CMNAME(1:4) .EQ. 'MAT1') THEN
CALL UMAT_MAT1(argument_list)
ELSE IF(CMNAME(1:4) .EQ. 'MAT2') THEN
CALL UMAT_MAT2(argument_list)
END IF
But I am implementing same in my USDFLD ,its not running.
So please anyone could help regarding this matter.
than you.

 

[zahedi66]

you can check the error log, what is written there?
did you name both of your materials in inp file MAT1 and MAT2?