dt138aw.F

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!||====================================================================
!||    dt38law   ../starter/source/materials/time_step/dt138aw.F
!||--- called by ------------------------------------------------------
!||    dtmain    ../starter/source/materials/time_step/dtmain.F
!||--- calls      -----------------------------------------------------
!||    dtel      ../starter/source/materials/time_step/dtel.f
!||    dtsph     ../starter/source/materials/time_step/dtsph.F
!||====================================================================
      SUBROUTINE dt38law(PM,GEO,PID, MAT, DELTAX, AIRE, VOL, DTX)
C
C     CALCUL DES DT ELEM. DES LOIS 38
C
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.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   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "param_c.inc"
#include      "vect01_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      my_real
     .   pm(npropm,*),geo(npropg,*), deltax(*), aire(*), vol(*), dtx(*)
      INTEGER PID(*),MAT(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, MX
C     REAL
      my_real
     .   rho0(mvsiz), g(mvsiz), c1(mvsiz), ssp(mvsiz),nu,e,
     .   vis(mvsiz)
C=======================================================================
      DO i=lft,llt
      mx      =mat(i)
      rho0(i) =pm( 1,mx)
      g(i)    =pm(22,mx)
      nu      =pm(21,mx)
      e       =pm(20,mx)
      c1(i)   =e/(three*(one-two*nu))
      END DO
      
C-----------------------------
C     CALCUL DE VITESSE DU SON
C-----------------------------
      DO i=lft,llt
         ssp(i)=sqrt((four_over_3*g(i)+c1(i))/rho0(i))
      END DO
      
C----------------------------------
C     CALCUL DES DT ELEMENTAIRES
C----------------------------------
      vis(:) = zero
      IF(jsph==0)THEN
         CALL dtel(ssp,pm,geo,pid,mat, rho0, vis, deltax, aire, vol, dtx)
      ELSE
         CALL dtsph(ssp,pm,geo,pid,mat, rho0, vis, deltax, vol, dtx)
      ENDIF
C-----------
      RETURN
      END