rmas12.F

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C
!||====================================================================
!||    rmas12        ../starter/source/elements/spring/rmas12.F
!||--- called by ------------------------------------------------------
!||    rinit3        ../starter/source/elements/spring/rinit3.F
!||--- uses       -----------------------------------------------------
!||====================================================================
      SUBROUTINE rmas12(IXR,GEO,PARTSAV,X  ,V  ,IPART,XL ,MSR    ,INR,MSRT)
      use element_mod , only : nixr
C----------------------------------------------
C     initialization of nodal masses
C----------------------------------------------
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "com01_c.inc"
#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-----------------------------------------------
      INTEGER :: IXR(NIXR,*),IPART(*)
      my_real :: geo(npropg,*),x(3,*),v(3,*),partsav(20,*), xl(*),msr(3,*),inr(3,*),msrt(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, IP,I1,I2,I3
      my_real :: xx,yy,zz,xy,yz,zx
      my_real :: ems, xi,ems2, xi2
C---------------------------------------------------------------------
      IF(irest_mselt/=0)THEN
       DO i=lft,llt
         msrt(i)=geo(1,ixr(1,i+nft))*xl(i)
       ENDDO
      END IF
C----------------------------------------------
C     MASSE ELEMENT /2
C----------------------------------------------
C----------------------------------------------
C     initialization of nodal masses
C----------------------------------------------
 
       DO i=lft,llt
        i1 = ixr(2,i+nft)
        i2 = ixr(3,i+nft)
        i3 = ixr(4,i+nft)
C
        ems = half * geo(1,ixr(1,i+nft))*xl(i)
        ems2= half * ems
 
        xi  = half * geo(9,ixr(1,i+nft))
        xi2 = half * xi*xl(i)
        msr(1,i) = ems2
        msr(2,i) = ems
        msr(3,i) = ems2
        inr(1,i)  = xi2
        inr(2,i)  = xi
        inr(3,i)  = xi2
C
C
        ip=ipart(i)
        partsav(1,ip)=partsav(1,ip) + two*ems
        partsav(2,ip)=partsav(2,ip)
     .              + ems2*(x(1,i1)+x(1,i3)) + ems*x(1,i2)
        partsav(3,ip)=partsav(3,ip)
     .              + ems2*(x(2,i1)+x(2,i3)) + ems*x(2,i2)
        partsav(4,ip)=partsav(4,ip)
     .              + ems2*(x(3,i1)+x(3,i3)) + ems*x(3,i2)
        xx = half*(x(1,i1)*x(1,i1)+x(1,i3)*x(1,i3)) + x(1,i2)*x(1,i2)
        xy = half*(x(1,i1)*x(2,i1)+x(2,i3)*x(2,i3)) + x(1,i2)*x(2,i2)
        yy = half*(x(2,i1)*x(2,i1)+x(3,i3)*x(3,i3)) + x(2,i2)*x(2,i2)
        yz = half*(x(2,i1)*x(3,i1)+x(1,i3)*x(1,i3)) + x(2,i2)*x(3,i2)
        zz = half*(x(3,i1)*x(3,i1)+x(2,i3)*x(2,i3)) + x(3,i2)*x(3,i2)
        zx = half*(x(3,i1)*x(1,i1)+x(3,i3)*x(3,i3)) + x(3,i2)*x(1,i2)
        partsav(5,ip) =partsav(5,ip) + two*xi + ems * (yy+zz)
        partsav(6,ip) =partsav(6,ip) + two*xi + ems * (zz+xx)
        partsav(7,ip) =partsav(7,ip) + two*xi + ems * (xx+yy)
        partsav(8,ip) =partsav(8,ip)  - ems * xy
        partsav(9,ip) =partsav(9,ip)  - ems * yz
        partsav(10,ip)=partsav(10,ip) - ems * zx
C
        partsav(11,ip)=partsav(11,ip) 
     .              + ems2*(v(1,i1)+v(1,i3)) + ems*v(1,i2)
        partsav(12,ip)=partsav(12,ip) 
     .              + ems2*(v(2,i1)+v(2,i3)) + ems*v(2,i2)
        partsav(13,ip)=partsav(13,ip) 
     .              + ems2*(v(3,i1)+v(3,i3)) + ems*v(3,i2)
        partsav(14,ip)=partsav(14,ip) + half * ems2 *
     .     (v(1,i1)*v(1,i1)+v(2,i1)*v(2,i1)+v(3,i1)*v(3,i1)
     .     +v(1,i3)*v(1,i3)+v(2,i3)*v(2,i3)+v(3,i3)*v(3,i3))
     .                                + half * ems *
     .     (v(1,i2)*v(1,i2)+v(2,i2)*v(2,i2)+v(3,i2)*v(3,i2))
       ENDDO
C
      RETURN
      END