abaqus子程序dflux在调用程序时出现越界访问错误
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我是用abaqus子程序dlux施加在圆柱外表面热流密度表达式关于cos余弦函数，以下是子程序的代码，提示
ABAQUS/standard rank 0 encountered a SEGMENTATION FAULT
ERROR CATEGORY: ELEMENT LOOP是什么原因，应该怎么改
SUBROUTINE DFLUX(FLUX, SOL, KSTEP, KINC, TIME, NOEL, NPT, COORDS,
1 JLTYP, TEMP, FIELD, NFIELD, XSTATE, NSTATE,
2 PROP, NPROP, CELENT, DFGRD0, DFGRD1, NODFGRD,
3 CHARLEN)
C
INCLUDE 'ABA_PARAM.INC'
C
C Local parameters
DIMENSION FLUX(NFIELD, NPT), TEMP(NPT), COORDS(NPT, 3),
1 FIELD(NFIELD, NPT), XSTATE(NSTATE, NPT), PROP(NPROP)
C
C Define constants and variables
PARAMETER (PI = 3.141592653589793D0, DEGRAD = PI / 180.0D0)
REAL*8 RADIUS
DATA RADIUS /2.75D0/ ! Example radius, should be set appropriately
C
C Calculate theta angle for each node on the cylinder surface
DO I = 1, NPT
RHO = SQRT(COORDS(I, 1)**2 + COORDS(I, 2)**2) ! Distance from z-axis
IF (ABS(RHO - RADIUS) .LT. 2.75D-6) THEN ! Check if on cylinder surface
THETA = ATAN2(COORDS(I, 2), COORDS(I, 1)) ! Calculate theta in radians
IF (THETA .LT. 0.0D0) THEN
THETA = THETA + 2.0D0 * PI ! Normalize to [0, 2*pi]
ENDIF
FLUX(1, I) = 457.0D0 * COS(THETA) ! Calculate flux
ELSE
! Optionally handle nodes not on the cylinder surface
FLUX(1, I) = 0.0D0 ! Or some other default value
ENDIF
END DO
C
RETURN
END
小海-有限元 
