I'd like to include an isolated node in a mesh, i.e. a node which doesn't belong to any element. This is useful for enabling rotation boundary conditions in structural analysis, e.g. by connecting rigid constraints from the mesh to an isolated node using DofConstraintRows.
If I try to do this in the simplest way, e.g. by adding a node to a mesh, I see that the isolated node gets deleted on the call to renumber_nodes_and_elem. This is not surprising since we need to delete orphaned nodes during mesh coarsening. But perhaps I could add a way to indicate "ophaned nodes that should not be deleted"? Another option would be that I could connect the isolated node to the rest of the mesh via a 1D element, and then ignore that 1D element during matrix assembly. This would work, I'm sure, but it doesn't strike me as the most elegant approach so I'd prefer to use a true isolated node, if that's possible. Thanks, David ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
