UMAT子程序的架构如下：fortran SUBROUTINE UMAT (STRESS,STATEV,DDSDDE,SSE,SPD,SCD,RPL,1 DDSDDT,DRPLDE,DRPLDT,STRAN,DSTRAN,TIME,DTIME,TEMP,DTEMP ,2 PREDEF,DPRED,CMNAME,NDI,NSHR,NTENS,NSTATV,PROPS,NPROPS ,3 COORDS,DROT,PNEWDT,CELENT,DFGRD0,DFGRD1,NOEL,NPT,LAYER ,4 KSPT,K...