sktvonm4.F

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!||====================================================================
!||    sktvonm4   ../engine/source/elements/solid/solide8z/sktvonm4.F
!||--- called by ------------------------------------------------------
!||    sktcons2   ../engine/source/elements/solid/solide8z/sktcons2.F
!||====================================================================
      SUBROUTINE sktvonm4(LFT ,LLT ,DD  ,SIG  ,DD1 ,
     .                    GT  ,R   )
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
#include      "mvsiz_p.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER LFT,LLT
C     REAL
      my_real
     .   dd(3,3,*),sig(6,*),dd1(3,3,*),gt(3,3,*),r(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
C---------deviatoric normalized stress: sig
      INTEGER I,J,K
C     REAL
      my_real
     .   ss(3,mvsiz),st(3,mvsiz)
C----------  verifier-------------------------------------
C----------HT(i)>0 
      DO i=lft,llt
c .....(R(I) is the alpha parameter of the radial return .. 
       IF (r(i)/=one) THEN
c ..... SS(), ST() contain deviatoric stresses ..
        ss(1,i)=sig(1,i)
        ss(2,i)=sig(2,i)
        ss(3,i)=sig(3,i)
        st(1,i)=sig(4,i)
        st(2,i)=sig(5,i)
        st(3,i)=sig(6,i)
c        print *,'DS,ST='
c        print *,SS(1,I),SS(2,I),SS(3,I)
c        print *,ST(1,I),ST(2,I),ST(3,I)
       ENDIF 
      ENDDO
C-----------GT->u-------- 
      DO i=lft,llt
c .....(R(I) is the alpha parameter of the radial return ..
c         print *,'[Ce]='
c         print *,DD(1,1,I),DD(1,2,I),GT(1,1,I)
       IF (r(i)/=one) THEN
        DO j=1,3
        DO k=j,3
         dd(j,k,i)=dd(j,k,i)-ss(j,i)*ss(k,i)
         gt(j,k,i)=gt(j,k,i)-st(j,i)*st(k,i)
         dd(k,j,i)=dd(j,k,i)
         gt(k,j,i)=gt(j,k,i)
        ENDDO
C         IF (DD(J,J,I)<EM10.OR.GT(J,J,I)<EM10) THEN
C          print *,'GT(J,J,I)=',GT(J,J,I)
          dd(j,j,i)=max(em10,dd(j,j,i))
          gt(j,j,i)=max(em10,gt(j,j,i))
C         ENDIF
        ENDDO
        DO j=1,3
        DO k=1,3
         dd1(j,k,i)=-ss(j,i)*st(k,i)
        ENDDO
        ENDDO
c         print *,'[Ct]='
c         print *,DD(1,1,I),DD(1,2,I),GT(1,1,I)
c         print *,DD1(1,1,I),DD1(2,1,I)
        ENDIF 
      ENDDO
C
      RETURN
      END