Wasim, In case, what you do is close to the phase-field fracture model (which is essentially a gradient damage model, and in this case a one-way coupled one), you might find the following master thesis and the associated code helpful: https://github.com/Jatandeep/Thesis
Best regards, Paras On Mon, Nov 21, 2022 at 2:28 PM Bruno Turcksin <bruno.turck...@gmail.com> wrote: > Wasim, > > It's hard to say without seeing any code. Are you working with one or two > DoFHandler? If you are working with two DoFHandler, are you sure that you > are using the correct one? > > Best, > > Bruno > > On Monday, November 21, 2022 at 5:54:22 AM UTC-5 ce21...@smail.iitm.ac.in > wrote: > >> Hello everyone. >> >> I am trying to solve elasticity and *laplace (damage)* equations in the >> same program. The rhs of laplace equation depends on the elasticity >> solution vector. Both equations have already been solved in step3 and 8. I >> am following the same approach. I am creating my objects (like >> triangulation_elasticity, fe_elasticity,dof_handler_elasticity) for >> elasticity as in step8 and solving the elasticity equation. Everything >> works fine till this point. >> >> >> Then I tried to solve the laplace equation using the elasticity solution. >> I followed step 3 approach and created the corresponding >> objects(triangulation_damage, fe_damage,dof_handler_damage). >> >> However, I am getting the following error: >> >> An error occurred in line <4310> of file >> </home/wasim/dealii-candi/tmp/unpack/deal.II-v9.4.0/source/fe/fe_values.cc> >> in function >> void dealii::FEValues<dim, spacedim>::reinit(const >> dealii::TriaIterator<dealii::DoFCellAccessor<dim, spacedim, lda> >&) [with >> bool level_dof_access = false; int dim = 2; int spacedim = 2] >> The violated condition was: >> static_cast<const FiniteElementData<dim> &>(*this->fe) == >> static_cast<const FiniteElementData<dim> &>(cell->get_fe()) >> Additional information: >> >> >> * The FiniteElement you provided to FEValues and the FiniteElement that >> belongs to the DoFHandler that provided the cell iterator do not match* >> . >> >> Stacktrace: >> ----------- >> #0 /home/wasim/dealii-candi/deal.II-v9.4.0/lib/libdeal_II.g.so.9.4.0: >> void dealii::FEValues<2, >> 2>::reinit<false>(dealii::TriaIterator<dealii::DoFCellAccessor<2, 2, false> >> > const&) >> #1 ./step-200: float >> step200::PhaseField::H_plus<dealii::TriaActiveIterator<dealii::DoFCellAccessor<2, >> 2, false> > >(dealii::Vector<double>, >> dealii::TriaActiveIterator<dealii::DoFCellAccessor<2, 2, false> >, unsigned >> int) >> #2 ./step-200: step200::PhaseField::assemble_system_damage() >> #3 ./step-200: step200::PhaseField::damage_mesh() >> #4 ./step-200: main >> --------------------- >> >> It says that in assemble_damage, the finite element provided to fevalues >> and that of dof_handler are different. >> I don't know what this exactly means as I am only creating a single >> object,* FE_Q<2> fe_damage* for solving my damage equation. >> >> Thanks and regards >> Wasim >> > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see > https://groups.google.com/d/forum/dealii?hl=en > --- > You received this message because you are subscribed to the Google Groups > "deal.II User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to dealii+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/5f30d3ae-264a-4ff0-ba85-27e6959ecc92n%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/5f30d3ae-264a-4ff0-ba85-27e6959ecc92n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAEU6zmQ8Btxu7d4LEnHHDK8CgiOs06H%2BDNEJxai3SZ71115%2BBw%40mail.gmail.com.
