Adding the mailing list in distribution... On Wed, Feb 20, 2019 at 6:03 PM Renato Poli <rebp...@gmail.com> wrote:
> Thanks. > > Do you see a better way to do? > I can see that Abaqus uses an extra node to tie all dofs together. > I need the DOFs to be identical. > That means eliminating lines in the matrix so that the displacements are > identical to each other. > > Renato > > On Wed, Feb 20, 2019 at 5:53 PM John Peterson <jwpeter...@gmail.com> > wrote: > >> On Wed, Feb 20, 2019 at 2:43 PM Renato Poli <rebp...@gmail.com> wrote: >> >>> Hi all, >>> >>> Just refreshing this one, because I am sort of stuck in inserting a >>> "rigid" >>> BCs. >>> It seems simple, but I cannot make it work. >>> >> >> Hi, >> >> From your error message, it sounds like you are introducing a coupling >> (through the constraint) between two dofs which would otherwise not be >> coupled, and this causes a new nonzero to be inserted into the system >> matrix after preallocation. You may be able to work around this issue by >> augmenting the sparsity pattern using a GhostingFunctor, similar to what is >> done in miscellaneous/miscellaneous_ex9/augment_sparsity_on_interface.h. >> >> -- >> John >> >> _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
