m77init.F

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!||====================================================================
!||    m77init   ../starter/source/materials/mat/mat077/m77init.F
!||--- called by ------------------------------------------------------
!||    matini    ../starter/source/materials/mat_share/matini.F
!||--- calls      -----------------------------------------------------
!||    finter    ../starter/source/tools/curve/finter.F
!||====================================================================
      SUBROUTINE m77init(
     1      NEL    , NUPARAM, NUVAR   , NFUNC  , IFUNC  , NPF   ,
     2      TF     , UPARAM , RHO0    , VOLUME , EINT   ,UVAR   ) 
C-----------------------------------------------
C   I M P L I C I T   T Y P E S
C-----------------------------------------------
#include "implicit_f.inc"
C---------+---------+---+---+--------------------------------------------
C VAR     | SIZE    |TYP| RW| DEFINITION
C---------+---------+---+---+--------------------------------------------
C NEL     |  1      | I | R | SIZE OF THE ELEMENT GROUP NEL 
C NUPARAM |  1      | I | R | SIZE OF THE USER PARAMETER ARRAY
C NUVAR   |  1      | I | R | NUMBER OF USER ELEMENT VARIABLES
C---------+---------+---+---+--------------------------------------------
C NFUNC   |  1      | I | R | NUMBER FUNCTION USED FOR THIS USER LAW
C IFUNC   | NFUNC   | I | R | FUNCTION INDEX 
C NPF     |  *      | I | R | FUNCTION ARRAY   
C TF      |  *      | F | R | FUNCTION ARRAY 
C---------+---------+---+---+--------------------------------------------
C UPARAM  | NUPARAM | F | R | USER MATERIAL PARAMETER ARRAY
C RHO0    | NEL     | F | R | INITIAL DENSITY
C VOLUME  | NEL     | F | R | VOLUME
C EINT    | NEL     | F | R | TOTAL INTERNAL ENERGY
C---------+---------+---+---+--------------------------------------------
C UVAR    |NEL*NUVAR| F |R/W| USER ELEMENT VARIABLE ARRAY
C----------------------------------------------------------------
C  I N P U T   A R G U M E N T S
C----------------------------------------------------------------
      INTEGER       NEL, NUPARAM, NUVAR
      my_real
     .      uparam(nuparam), rho0(nel), volume(nel), eint(nel)
C----------------------------------------------------------------
C  O U T P U T   A R G U M E N T S
C----------------------------------------------------------------
C  I N P U T  O U T P U T   A R G U M E N T S
C----------------------------------------------------------------
      my_real
     . uvar(nel,nuvar)
C----------------------------------------------------------------
C  VARIABLES FOR FUNCTION INTERPOLATION 
C----------------------------------------------------------------
      INTEGER NPF(*), NFUNC, IFUNC(NFUNC)
      my_real
     .   finter,tf(*)
      EXTERNAL finter
C----------------------------------------------------------------
C  L O C A L  V A R I B L E S
C----------------------------------------------------------------
      INTEGER         IADBUF, I, J,IFUNCR,IFUNCK
C     REAL
      my_real
     .        e0,rho_air0,alpha,eint0,kk,mu,df
C=======================================================================
      e0 = uparam(2) 
      rho_air0 =  uparam(14 + 2*nfunc)
      alpha   =  uparam(17 + 2*nfunc)
      eint0    =  uparam(20 + 2*nfunc)
      kk       =  uparam(21 + 2*nfunc)
C
C initialisation of Alpha and KK if Ifuncr and Ifunck is defined
C
      ifuncr = ifunc(nfunc)
      ifunck = ifunc(nfunc-1)
      mu = one
      IF(ifuncr > 0) alpha= alpha*finter(ifuncr,mu,npf,tf,df)
      IF(ifunck > 0) kk= kk*finter(ifunck,mu,npf,tf,df)
C      
      DO i=1,nel                    
        DO j=1,nuvar
          uvar(i,j)=zero
        ENDDO
        uvar(i,1) = rho_air0
        uvar(i,2) = eint0
        uvar(i,3) = alpha*volume(i)
        uvar(i,12) = e0
        uvar(i,21) = alpha
        uvar(i,22) = kk
      ENDDO
 
      RETURN
      END