rotos4.F

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!||====================================================================
!||    rotos4          ../engine/source/materials/mat_share/rotos4.F
!||--- called by ------------------------------------------------------
!||    usermat_shell   ../engine/source/materials/mat_share/usermat_shell.F
!||====================================================================
      SUBROUTINE rotos4(JFT,JLT,SIGXX,SIGYY,SIGXY,SIGYX,DIR,NEL)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER,INTENT(IN) :: JFT, JLT,NEL
      my_real,INTENT(INOUT) :: sigxx(nel),sigyy(nel),sigxy(nel),sigyx(nel)
      my_real,INTENT(IN) :: dir(nel,2)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
      my_real s1, s2, s3, s4,s5
C-----------------------------------------------
C   S o u r c e   L i n e s 
C-----------------------------------------------
      DO i=jft,jlt
         s1 =    dir(i,1)*dir(i,1)*sigxx(i) + dir(i,2)*dir(i,2)*sigyy(i) + dir(i,1)*dir(i,2)*(sigxy(i)+sigyx(i))
         s2 =    dir(i,2)*dir(i,2)*sigxx(i) + dir(i,1)*dir(i,1)*sigyy(i) - dir(i,2)*dir(i,1)*(sigxy(i)+sigyx(i))
         s5 =   -dir(i,1)*dir(i,2)*sigxx(i) + dir(i,2)*dir(i,1)*sigyy(i)
         s3 = s5+dir(i,1)*dir(i,1)*sigxy(i) - dir(i,2)*dir(i,2)*sigyx(i)
         s4 = s5+dir(i,1)*dir(i,1)*sigyx(i) - dir(i,2)*dir(i,2)*sigxy(i)
         sigxx(i)=s1
         sigyy(i)=s2
         sigxy(i)=s3
         sigyx(i)=s4
      ENDDO
c-----------
      RETURN
      END