C DOUOTA    SOURCE    CHAT      05/01/12    22:54:33     5004
      SUBROUTINE DOUOTA(VELA,MATE,IFOU,MAPL, SIG,VAR, LHOOK,DDHOOK,IRET)
C
C=======================================================================
C
C  MATRICE DE HOOKE TANGENTE DES ELEMENTS JOINTS
C
C  ENTREES
C     VELA() = materiau dans un tableau de travail
C     MATE   = Nom du materiau
C     IFOU   = num{ro d'harmonique de  fourier: IFOUR de CCOPTIO
C     MAPL   = numero du materiau plastique
C     LHOOK  = taille de la matrice de hooke
C     SIG()  = etat de contrainte
C     VAR()  = variables internes
C
C  SORTIES
C     DDHOOK(LHOOK,LHOOK) = matrice de hooke
C     IRET = 1 si option existante 0 SINON
C
C  Pierre Pegon (ISPRA) OCTOBER 93
C=======================================================================
C
      IMPLICIT INTEGER(I-N)
      IMPLICIT REAL*8(A-H,O-Z)
      CHARACTER*8 MATE
C
      DIMENSION VELA(*),DDHOOK(LHOOK,*),SIG(*),VAR(*)
C
      IRET=1
      CALL ZERO(DDHOOK,LHOOK,LHOOK)
C
C     MATERIAU ISOTROPE (SEULEMENT)
C
      IF(MATE.EQ.'ISOTROPE') THEN
C
C     MODELE DE JOINT DILATANT EN CONTRAINTE OU DEF. PLANE
C
        IF(MAPL.EQ.35.AND.
     &    (IFOU.EQ.-3.OR.IFOU.EQ.-2.OR.IFOU.EQ.-1)) THEN
C
          DDHOOK(1,1)=VAR(7)
          DDHOOK(1,2)=VAR(8)
          DDHOOK(2,1)=VAR(9)
          DDHOOK(2,2)=VAR(10)
C
C     MODELE DE JOINT_SOFT
C
        ELSEIF(MAPL.EQ.56.AND.
     &     (IFOU.EQ.-3.OR.IFOU.EQ.-2.OR.IFOU.EQ.-1)) THEN
C
          DDHOOK(1,1)=VAR(3)
          DDHOOK(1,2)=VAR(4)
          DDHOOK(2,1)=0.D0
          DDHOOK(2,2)=VAR(5)
C
C     MODELE D'ANCRAGE_ELIGEHAUSEN
C
        ELSEIF(MAPL.EQ.91.AND.
     &     (IFOU.EQ.-3.OR.IFOU.EQ.-2.OR.IFOU.EQ.-1)) THEN
C
          DDHOOK(1,1)=VAR(4)
          DDHOOK(1,2)=0.D0
          DDHOOK(2,1)=0.D0
          DDHOOK(2,2)=VAR(5)
C
C     OPTION NON DEFINIE
C
        ELSE
          IRET=0
        ENDIF
C
C     OPTION NON DEFINIE
C
      ELSE
        IRET=0
      ENDIF
C
      RETURN
      END