Hello Krishna: I had this issue before. It just means that when you select mesh entities (vertex) to form a surface, you have to pay attention to the order of which entity goes first, second,... it would be clear if you look at the geometry txt file. Best regards Jane
On Tue, Mar 9, 2021 at 3:21 PM krishan...@gmail.com < krishanu.se...@gmail.com> wrote: > Hello Paras, > > Thanks for your response. I have been using the GUI of Gmsh to generate > the mesh. Do you have any suggestions about what to do in Gmsh to avoid the > negative volume issue? > > Do meshes generated with Abaqus, are able to avoid the above-mentioned > issue of negative volume? > > Thanks in advance. > > Krishanu > > On Tuesday, 9 March 2021 at 13:14:27 UTC-5 Paras Kumar wrote: > >> I use the .inp format of Abaqus, since my code relies on material-IDs >> which (in my limited experience) are easy to handle with .inp format. I >> generate meshes using both GMSH (here as you mentioned, one needs to be >> careful to add curves/surface parts in the correct order to avoid negative >> volumes) and Abaqus CAE (works fine for relatively simple geometries) to >> generate such meshes. Not aware of other quad/hex generating open source >> codes. The dealii::GridGenerator namespace also offers possibilities to >> generate meshes for certain primitive shapes and combinations thereof. >> >> Best, >> Paras >> >> On Tue, Mar 9, 2021 at 6:33 PM krishan...@gmail.com <krishan...@gmail.com> >> wrote: >> >>> >>> I am wondering what meshing software produces output files that would >>> work best with deal.ii. I have tried Gmsh, but it seems when this mesh >>> (generated by Gmsh) is imported in deal.ii, it is facing the issue of >>> negative volume fraction of a cell (could be because of the order of nodes >>> written in Gmsh?). Any suggestion about any other meshing software that >>> could be used which would avoid this issue? >>> >>> Thanks >>> >> >>> -- >>> 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+un...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/dealii/33e38481-07dd-487f-ba04-91ab2d456e5dn%40googlegroups.com >>> <https://groups.google.com/d/msgid/dealii/33e38481-07dd-487f-ba04-91ab2d456e5dn%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/f4809e7f-c770-43da-ac1d-3ec4268a97e0n%40googlegroups.com > <https://groups.google.com/d/msgid/dealii/f4809e7f-c770-43da-ac1d-3ec4268a97e0n%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/CAAAchuXOYnBX4YztJLNWLcqn5qf5Zfqt7xK1XOh2pWzW9aiqMg%40mail.gmail.com.
