cutmass.F

Go to the documentation of this file.

Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2025 Altair Engineering Inc.
Copyright>
Copyright>        This program is free software: you can redistribute it and/or modify
Copyright>        it under the terms of the GNU Affero General Public License as published by
Copyright>        the Free Software Foundation, either version 3 of the License, or
Copyright>        (at your option) any later version.
Copyright>
Copyright>        This program is distributed in the hope that it will be useful,
Copyright>        but WITHOUT ANY WARRANTY; without even the implied warranty of
Copyright>        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Copyright>        GNU Affero General Public License for more details.
Copyright>
Copyright>        You should have received a copy of the GNU Affero General Public License
Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>
Copyright>
Copyright>        Commercial Alternative: Altair Radioss Software
Copyright>
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss
Copyright>        software under a commercial license.  Contact Altair to discuss further if the
Copyright>        commercial version may interest you: https://www.altair.com/radioss/.
!||====================================================================
!||    cutmass     ../engine/source/tools/sect/cutmass.F
!||--- called by ------------------------------------------------------
!||    genani      ../engine/source/output/anim/generate/genani.F
!||--- calls      -----------------------------------------------------
!||    write_r_c   ../common_source/tools/input_output/write_routtines.c
!||====================================================================
      SUBROUTINE cutmass(NC,X,AL,NODCUT,NELCUT,VEL,V,IVOIS)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      my_real x(3,*),al(*) ,vel(3,*),v(3,*)
      INTEGER NC(5,*),NODCUT,NELCUT,IVOIS(2,*)
C-----------------------------------------------
      my_real x13,y13,z13,x24,y24,z24,xx,yy,zz,s,un6
      INTEGER I,J,N1,N2,N3,N4
      REAL R4
C-----------------------------------------------
      un6=one_over_6
C
      DO i=1,nodcut
        n1=ivois(1,i)
        n2=ivois(2,i)
        DO j=1,3
          v(j,i)=al(i)*vel(j,n2)+(1.-al(i))*vel(j,n1)
        ENDDO
      ENDDO
C
      DO i=1,nodcut
        al(i)=zero
      ENDDO
      DO i=1,nelcut
        n1=nc(1,i)
        n2=nc(2,i)
        n3=nc(3,i)
        n4=nc(4,i)
        x13=x(1,n3)-x(1,n1)
        y13=x(2,n3)-x(2,n1)
        z13=x(3,n3)-x(3,n1)
        x24=x(1,n4)-x(1,n2)
        y24=x(2,n4)-x(2,n2)
        z24=x(3,n4)-x(3,n2)
        xx=y13*z24-z13*y24
        yy=z13*x24-x13*z24
        zz=x13*y24-y13*x24
        IF(n3==n4)THEN
           s=un6
        ELSE
           s=one_over_8
        ENDIF
C        S=S*SQRT(XX**2+YY**2+ZZ**2)
        al(n1)=al(n1)+s*(v(1,n1)*xx+v(2,n1)*yy+v(3,n1)*zz)
        al(n2)=al(n2)+s*(v(1,n2)*xx+v(2,n2)*yy+v(3,n2)*zz)
        al(n3)=al(n3)+s*(v(1,n3)*xx+v(2,n3)*yy+v(3,n3)*zz)
        IF(n3/=n4)al(n4)=al(n4)+s*(v(1,n4)*xx+v(2,n4)*yy+v(3,n4)*zz)
      ENDDO
      DO i=1,nodcut
         r4 = al(i)
         CALL write_r_c(r4,1)
      ENDDO
C-----------------------------------------------
      RETURN
      END