shell_loc_cor.F

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!||====================================================================
!||    shell_loc_cor     ../engine/source/tools/seatbelts/shell_loc_cor.F
!||--- called by ------------------------------------------------------
!||    update_slipring   ../engine/source/tools/seatbelts/update_slipring.F
!||--- calls      -----------------------------------------------------
!||    clskew3           ../engine/source/elements/sh3n/coquedk/cdkcoor3.F
!||====================================================================
      SUBROUTINE shell_loc_cor(X,IXC,J,XL2,YL2,XL3,YL3,XL4,YL4,IREP,NN1,NN2,N_DIR2)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com04_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER, INTENT(IN) :: IXC(NIXC,NUMELC),J,IREP,NN1,NN2
      my_real, INTENT(IN) ::  x(3,numnod)
      my_real, INTENT(INOUT) ::  xl2,yl2,xl3,yl3,xl4,yl4,n_dir2(2)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      my_real 
     .        rxl,ryl,rzl,sxl,syl,sszl,r11l,r12l,r13l,
     .        r21l,r22l,r23l,r31l,r32l,r33l,xx,yy,zz,offbl,deta1l
C---------------------------------------------------------
C
C---------------------------------------------------------
C     Computation of new reference configuration
C---------------------------------------------------------
C
      rxl=x(1,ixc(3,j))+x(1,ixc(4,j))-x(1,ixc(2,j))-x(1,ixc(5,j))
      sxl=x(1,ixc(4,j))+x(1,ixc(5,j))-x(1,ixc(2,j))-x(1,ixc(3,j))
      ryl=x(2,ixc(3,j))+x(2,ixc(4,j))-x(2,ixc(2,j))-x(2,ixc(5,j))
      syl=x(2,ixc(4,j))+x(2,ixc(5,j))-x(2,ixc(2,j))-x(2,ixc(3,j))
      rzl=x(3,ixc(3,j))+x(3,ixc(4,j))-x(3,ixc(2,j))-x(3,ixc(5,j))
      sszl=x(3,ixc(4,j))+x(3,ixc(5,j))-x(3,ixc(2,j))-x(3,ixc(3,j))
C
      offbl = one
      CALL clskew3(1,1,irep,
     .             rxl, ryl, rzl, 
     .             sxl, syl, sszl, 
     .             r11l,r12l,r13l,r21l,r22l,r23l,r31l,r32l,r33l,deta1l,offbl)
C
      xx=x(1,ixc(3,j))-x(1,ixc(2,j))
      yy=x(2,ixc(3,j))-x(2,ixc(2,j))
      zz=x(3,ixc(3,j))-x(3,ixc(2,j))
      xl2=r11l*xx+r21l*yy+r31l*zz
      yl2=r12l*xx+r22l*yy+r32l*zz
      xx=x(1,ixc(4,j))-x(1,ixc(2,j))
      yy=x(2,ixc(4,j))-x(2,ixc(2,j))
      zz=x(3,ixc(4,j))-x(3,ixc(2,j))
      xl3=r11l*xx+r21l*yy+r31l*zz
      yl3=r12l*xx+r22l*yy+r32l*zz
      xx=x(1,ixc(5,j))-x(1,ixc(2,j))
      yy=x(2,ixc(5,j))-x(2,ixc(2,j))
      zz=x(3,ixc(5,j))-x(3,ixc(2,j))
      xl4=r11l*xx+r21l*yy+r31l*zz
      yl4=r12l*xx+r22l*yy+r32l*zz
C
      IF ((nn1 > 0).AND.(nn2 > 0)) THEN
        xx=x(1,nn2)-x(1,nn1)
        yy=x(2,nn2)-x(2,nn1)
        zz=x(3,nn2)-x(3,nn1)
        n_dir2(1)=r11l*xx+r21l*yy+r31l*zz
        n_dir2(2)=r12l*xx+r22l*yy+r32l*zz
      ENDIF
C
      RETURN
      END