abaqus子程序usdfld getvrm的值一直是零？

SDEG的云图是有值的 但是getvrm得到的一直是零 麻烦各位大佬帮忙看看有什么问题 SUBROUTINE USDFLD(FIELD,STATEV,PNEWDT,DIRECT,T,CELENT, 1 TIME,DTIME,CMNAME,ORNAME,NFIELD,NSTATV,NOEL,NPT,LAYER, 2 KSPT,KSTEP,KINC,NDI,NSHR,COORD,JMAC,JMATYP,MATLAYO, 3 LACCFLA) C INCLUDE 'ABA_PARAM.INC' C CHARACTER*80 CMNAME,ORNAME CHARACTER*3 FLGRAY(15) DIMENSION FIELD(NFIELD),STATEV(NSTATV),DIRECT(3,3), 1 T(3,3),TIME(2) DIMENSION ARRAY(15),JARRAY(15),JMAC(*),JMATYP(*), 1 COORD(*) C real alfa,K0,D,DAMAGED_K,K PARAMETER(TOLER=1.0E-6) alfa=4.0 K0=1.0E-6 C Absolute value of current strain: CALL GETVRM('SDEG',ARRAY,JARRAY,FLGRAY,JRCD,JMAC,JMATYP, 1 MATLAYO,LACCFLA) D=ARRAY(1) IF (D.LE.TOLER) THEN D=0 END IF DAMAGED_K=EXP(alfa*D) K=K0*DAMAGED_K C field variable FIELD(1)=D C state variable STATEV(1)=D STATEV(2)=K C If error, write comment to .DAT file: IF(JRCD.NE.0)THEN WRITE(6,*) 'REQUEST ERROR IN USDFLD FOR ELEMENT NUMBER ', 1 NOEL,'INTEGRATION POINT NUMBER ',NPT ENDIF C RETURN END