scroto.F

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!||====================================================================
!||    scroto     ../engine/source/elements/thickshell/solidec/scroto.F
!||--- called by ------------------------------------------------------
!||    scordef3   ../engine/source/elements/thickshell/solidec/scordef3.F
!||====================================================================
      SUBROUTINE scroto(NEL,SIG,SIGN,DIR)
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 :: NEL
C
      my_real
     .   sig(mvsiz,6), sign(mvsiz,6), dir(mvsiz,2)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
C
      my_real
     .   x2,y2,xy,xys2
C-----------------------------------------------
      DO i=1,nel
         x2=dir(i,1)*dir(i,1)
         y2=dir(i,2)*dir(i,2)
         xy=dir(i,1)*dir(i,2)
         xys2=two*xy*sig(i,4)
         sign(i,1) = x2*sig(i,1)+y2*sig(i,2)-xys2
         sign(i,2) = y2*sig(i,1)+x2*sig(i,2)+xys2
         sign(i,3) = sig(i,3)
         sign(i,4) =(sig(i,1)-sig(i,2))*xy+(x2-y2)*sig(i,4)
         sign(i,5) = dir(i,2)*sig(i,6)+dir(i,1)*sig(i,5)
         sign(i,6) = dir(i,1)*sig(i,6)-dir(i,2)*sig(i,5)
      ENDDO
C-----------
      RETURN
      END