Create face groups in body fitting mesh
Create face groups in body fitting meshPosted by Martin Isack at April 12. 2012
I was trying the new body fitting algorithm today. As it is a pure 3D mesher it doesn’t create 2D elements. But I need 2D elements to create boundary conditions on faces. Is it possible to create 2D elements after mesh generation with body fitting?
You can create 2D elements using "Create boundary elements" function.
thank you for your quick reply. I have these boundary faces now. But how to create groups of them?
My preferred way until now was to create groups in the geometry module and use Create Groups from Geometry in the mesh module. But this doesn’t work anymore when I create boundary faces after meshing.
You can create your groups via Create Group dialog using options "Group on filter" or "Standalone group" with usage of filter. Use "Lying on Geom" criterion. But there is a subtle point with threshold shape. For usage of Create Groups from Geometry, the shape should be a sub-shape of the meshed geometry, but in the case of Body fitting it should NOT be a sub-shape of the meshed geometry (it seems to be a bug).
I attached a dump of study where 2 groups are created: 'bnd Group' is created by MakeBoundaryElements() command and 'group' is created by GroupOnFilter() command.
Thank you very much! I were not able to create the filter because I were not aware of this bug.
(I’m sorry, I just realized, that I started thread in the wrong section of this forum.)