uniakt
C UNIAKT SOURCE CHAT 05/01/13 03:58:26 5004 IMPLICIT INTEGER(I-N) IMPLICIT REAL*8(A-H,O-Z) C---------------------------------------------------------------------- C C COMPORTEMENT UNIDIRECTIONNEL ACIER_UNI (2D ou coque) C (D'APRES FIBSTE DU MODELE A FIBRE) C Matrice tangente C C---------------------------------------------------------------------- C Pierre Pegon (ISPRA) Juillet 1994 C Didier Combescure (ISPRA) Septembre 1995 C---------------------------------------------------------------------- C XMAT(1) YOUN C XMAT(2) V1X C XMAT(3) V1Y C EPAI (if any) en deformations planes C---------------------------------------------------------------------- C XVAR( 1) VARF( 1) TANGENT MODULUS C---------------------------------------------------------------------- C XKTAT(4,4) TANGENT STIFFNESS MATRIX C---------------------------------------------------------------------- -INC PPARAM -INC CCOPTIO * DIMENSION XMAT(*),XVAR(*) DIMENSION XKTAT(4,4) * KERRE=0 * YOUN=XMAT(1) V1X=XMAT(2) V1Y=XMAT(3) TANGE = XVAR(1) EPAI = 1.D0 C C C Cas deformations planes C EPAI=XMAT(17) XKTAT(1,1)=EPAI*TANGE*V1X**4 XKTAT(2,2)=EPAI*TANGE*V1Y**4 XKTAT(2,1)=EPAI*TANGE*(V1X*V1Y)**2 XKTAT(1,2)=EPAI*TANGE*(V1X*V1Y)**2 XKTAT(1,3)=EPAI*TANGE*(V1X**3)*V1Y XKTAT(2,3)=EPAI*TANGE*V1X*(V1Y**3) XKTAT(3,1)=EPAI*TANGE*(V1X**3)*V1Y XKTAT(3,2)=EPAI*TANGE*V1X*(V1Y**3) XKTAT(3,3)=EPAI*TANGE*(V1X*V1Y)**2 C C Cas contraintes planes C XKTAT(1,1)=TANGE*V1X**4 XKTAT(2,2)=TANGE*V1Y**4 XKTAT(2,1)=TANGE*(V1X*V1Y)**2 XKTAT(1,2)=TANGE*(V1X*V1Y)**2 XKTAT(1,4)=TANGE*(V1X**3)*V1Y XKTAT(2,4)=TANGE*V1X*(V1Y**3) XKTAT(4,1)=TANGE*(V1X**3)*V1Y XKTAT(4,2)=TANGE*V1X*(V1Y**3) XKTAT(4,4)=TANGE*(V1X*V1Y)**2 C XKTAT(1,1)=TANGE C XKTAT(3,3)=TANGE ENDIF C RETURN END
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