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!
! CalculiX - A 3-dimensional finite element program
! Copyright (C) 1998-2015 Guido Dhondt
!
! This program is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public License as
! published by the Free Software Foundation(version 2);
!
!
! This program is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with this program; if not, write to the Free Software
! Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
!
subroutine resultsforc(nk,f,fn,nactdof,ipompc,nodempc,
& coefmpc,labmpc,nmpc,mi,fmpc,calcul_fn,calcul_f)
!
! calculating the equation system internal force vector
! (one entry for each active degree of freedom)
!
implicit none
!
character*20 labmpc(*)
!
integer mi(*),nactdof(0:mi(2),*),ipompc(*),nodempc(3,*),nk,i,j,
& nmpc,ist,ndir,node,index,calcul_fn,calcul_f
!
real*8 f(*),fn(0:mi(2),*),coefmpc(*),fmpc(*),forcempc
!
! subtracting the mpc force (for each linear mpc there is one
! force; the actual force in a node belonging to the mpc is
! obtained by multiplying this force with the nodal coefficient.
! The force has to be subtracted from f, since it does not
! appear on the rhs of the equation system
!
if(calcul_fn.eq.1)then
do i=1,nmpc
ist=ipompc(i)
node=nodempc(1,ist)
ndir=nodempc(2,ist)
if(ndir.gt.3) cycle
forcempc=fn(ndir,node)/coefmpc(ist)
fmpc(i)=forcempc
fn(ndir,node)=0.d0
index=nodempc(3,ist)
if(index.eq.0) cycle
do
node=nodempc(1,index)
ndir=nodempc(2,index)
fn(ndir,node)=fn(ndir,node)-coefmpc(index)*forcempc
index=nodempc(3,index)
if(index.eq.0) exit
enddo
enddo
endif
!
! calculating the system force vector
!
if(calcul_f.eq.1) then
do i=1,nk
do j=0,mi(2)
if(nactdof(j,i).gt.0) then
f(nactdof(j,i))=fn(j,i)
endif
enddo
enddo
endif
!
! adding the mpc force again to fn
!
if(calcul_fn.eq.1)then
do i=1,nmpc
ist=ipompc(i)
node=nodempc(1,ist)
ndir=nodempc(2,ist)
if(ndir.gt.3) cycle
forcempc=fmpc(i)
fn(ndir,node)=forcempc*coefmpc(ist)
index=nodempc(3,ist)
!
! nodes not belonging to the structure have to be
! taken out
!
if(labmpc(i)(1:7).eq.'MEANROT') then
if(nodempc(3,nodempc(3,index)).eq.0) cycle
elseif(labmpc(i)(1:10).eq.'PRETENSION') then
if(nodempc(3,index).eq.0) cycle
elseif(labmpc(i)(1:5).eq.'RIGID') then
if(nodempc(3,nodempc(3,nodempc(3,nodempc(3,nodempc(3,inde
&x))))).eq.0) cycle
else
if(index.eq.0) cycle
endif
do
node=nodempc(1,index)
ndir=nodempc(2,index)
fn(ndir,node)=fn(ndir,node)+coefmpc(index)*forcempc
index=nodempc(3,index)
if(labmpc(i)(1:7).eq.'MEANROT') then
if(nodempc(3,nodempc(3,index)).eq.0) exit
elseif(labmpc(i)(1:10).eq.'PRETENSION') then
if(nodempc(3,index).eq.0) exit
elseif(labmpc(i)(1:5).eq.'RIGID') then
if(nodempc(3,nodempc(3,nodempc(3,nodempc(3,nodempc(3,i
&ndex))))).eq.0) exit
else
if(index.eq.0) exit
endif
enddo
enddo
endif
!
return
end
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