m1tot_stab18.F

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!||====================================================================
!||    m1tot_stab18   ../engine/source/elements/solid/solide8e/m1tot_stab18.F
!||--- called by ------------------------------------------------------
!||    m1lawtot       ../engine/source/materials/mat/mat001/m1lawtot.F
!||====================================================================
      SUBROUTINE m1tot_stab18(SIG,SIGL,G2,G,OFFG,ISMSTR,NEL )
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   C o m m o n   B l o c k s
C-----------------------------------------------
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER, INTENT(IN) :: NEL,ISMSTR
C
      my_real, INTENT(IN) :: g2
      my_real, DIMENSION(NEL,6), INTENT(INOUT) :: sig,sigl
      my_real, DIMENSION(NEL), INTENT(IN)  :: offg
      my_real, DIMENSION(MVSIZ), INTENT(INOUT)  :: g
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, J,ipr
      my_real
     .   ff,facg,facc,frho,p,facmax,facd,dp,sig2(6),fac
C-----------------------------------------------
        DO i=1,nel
         ff = -onep6*min(sig(i,1),sig(i,2),sig(i,3))
         IF (offg(i)>one.OR.ff <=g2) cycle
         facg = max(one,sqrt(ff/g2)) + zep15*ff/g2
         facd = max(one,zep85*facg)
         sig(i,4)=facg*sig(i,4)
         sig(i,5)=facg*sig(i,5)
         sig(i,6)=facg*sig(i,6)
         p = -third*(sig(i,1)+sig(i,2)+sig(i,3))
         sig(i,1)=facd*(sig(i,1)+p)-p
         sig(i,2)=facd*(sig(i,2)+p)-p
         sig(i,3)=facd*(sig(i,3)+p)-p
         g(i) = facg*g(i)
        END DO
        IF (ismstr==12) THEN
          facmax = four + half
          DO i=1,nel
           IF (offg(i)<=one) cycle
           ff = -min(sig(i,1),sig(i,2),sig(i,3))
           IF (ff <=g2 ) cycle
           fac = onep25*max(one,ff/g2)
           facg = min(facmax,fac-one)
           sig2(1) = sig(i,1)-sigl(i,1)
           sig2(2) = sig(i,2)-sigl(i,2)
           sig2(3) = sig(i,3)-sigl(i,3)
           sig2(4) = sig(i,4)-sigl(i,4)
           sig2(5) = sig(i,5)-sigl(i,5)
           sig2(6) = sig(i,6)-sigl(i,6)
           sig(i,4)=sig(i,4)+facg*sig2(4)
           sig(i,5)=sig(i,5)+facg*sig2(5)
           sig(i,6)=sig(i,6)+facg*sig2(6)
           p = -third*(sig2(1)+sig2(2)+sig2(3))
           facd = min(onep2,facg)
           sig(i,1)=sig(i,1)+facd*(sig2(1)+p)
           sig(i,2)=sig(i,2)+facd*(sig2(2)+p)
           sig(i,3)=sig(i,3)+facd*(sig2(3)+p)
           g(i) = (facg+one)*g(i)
          END DO
        END IF !(ISMSTR==12) THEN
C      
      RETURN
      END