cndt_ply.F

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!||====================================================================
!||    cndt_ply   ../engine/source/properties/composite_options/stack/cndt_ply.F
!||--- called by ------------------------------------------------------
!||    cbaforc3   ../engine/source/elements/shell/coqueba/cbaforc3.F
!||====================================================================
      SUBROUTINE cndt_ply(JFT     ,JLT   ,NPT,OFF  ,ALDT    ,AREA ,THK,
     1                    THK_IPLY,A1    ,A1_IPLY,STI ,OFFI,VISCMX)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
#include      "comlock.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 JFT, JLT,NPT
      my_real
     .   off(*),sti(mvsiz,*),
     .   aldt(*), a1(mvsiz,*), thk(mvsiz,*),
     .   area(*),a1_iply(mvsiz,*),thk_iply(mvsiz,*),
     .   offi(mvsiz,*),viscmx(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER INDXOF(MVSIZ),
     .        i, j, jinf,jsup
C     REAL
      my_real
     .    divm ,fac,vol
C-----------------------------------------------
       DO i=jft,jlt
         divm=aldt(i)*viscmx(i)
         divm= max(divm*divm, em20)
         DO j=1,npt
           vol = area(i)*thk(i,j)
           sti(i,j) = half*vol * a1(i,j)* off(i) / divm
         ENDDO
       ENDDO
C       
       DO i=jft,jlt
         divm=max(aldt(i)*aldt(i),em20)
         DO j=1,npt - 1 
           jinf = j
           jsup = j + 1
C    sti = vol*E/lc*lc
C    lc = (vol)**0.3333
C    here we take lc = hi 
C  la rigidit  est surestim , dans le cas ou hi<lc 
cc           FAC = OFF(I)*ONE_OVER_8*AREA(I)/THK_IPLY(I,J)
cc           FAC = OFFI(I,J)*AREA(I)/THK_IPLY(I,J)
           IF(off(i)/=zero)THEN
             fac = area(i)*four
             sti(i,jinf) = sti(i,jinf) + fac * a1_iply(i,j)  
             sti(i,jsup) = sti(i,jsup) + fac * a1_iply(i,j) 
           END IF
         ENDDO
       ENDDO       
C
      RETURN
      END