m115_perturb.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/.
!||====================================================================
!||    m115_perturb   ../starter/source/materials/mat/mat115/m115_perturb.F
!||--- called by ------------------------------------------------------
!||    s4init3        ../starter/source/elements/solid/solide4/s4init3.F
!||    sinit3         ../starter/source/elements/solid/solide/sinit3.F
!||====================================================================
      SUBROUTINE m115_perturb(PM       ,MAT      ,RHO      ,PERTURB  ,RNOISE   )
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      "com04_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 PERTURB(NPERTURB),MAT(*)
      my_real  
     .   rho(2*llt),rnoise(nperturb,*),pm(npropm,*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I,J
      my_real
     .        rho0
C-----------------------------------------------
      ! Loop over elements
      DO i = lft,llt
        ! Initial constant density
        rho0   = pm(1,mat(i))
        rho(i) = rho0
        ! If /PERTURB/SOLID/PART card is set
        IF (nperturb /= 0) THEN
          DO j=1,nperturb
            IF (perturb(j) == 3 .AND. rnoise(j,numelc+numeltg+i+nft) /= zero) THEN
              rho(i)  = rho(i) * rnoise(j,numelc+numeltg+i+nft)
            ENDIF
          ENDDO
        ENDIF
        ! Copy of initial density on the second length of RHO
        rho(i+llt) = rho(i)
      ENDDO
C-----------------------------------------------
      END SUBROUTINE m115_perturb