Continuity in the mesh

[izax1]

I have a mesh of 2D Quads. There are several surfaces to be meshed. How can I be sure the meshes between two surfaces are stiched togethet and I know I have continuity in the mesh. Some surfaces it is obvious that there is no continouty. (That is OK when I can see that) my problem is when they are verry close together; How can I be sure they are stiched? Can I be sure they are not continous when the Model Check shows me blue lines where they should not be? I get blue lines even when they look continous! I'm a little confused.

 

[MeshNinja]

What version of NX are you running? NX8.5 shows free edges if you use the "Element Edges" command in the Advanced Simulation toolbar; the default highlights these pink. If you are meshing onto geometry the blue lines could be geometry edges rather than shell edges.

 

[izax1]

MeshNinja. Thanks for your feedback. I run NX8, and I can see the pink lines. I see that I need to partition the faces into smaller meshable areas. I use split faces, but its difficult to see which area I am splitting. NX just asks me for the Edge location. Which edge? I assume the edge is relalted to a face?

 

[MeshNinja]

Split face is a fem command.

I usually break up faces in the *i.part typically using split body or sub-divide face. So split face is not a command I use very often, that said it seems to work okay.

This is how it works: Nx wants to draw a line between two points, both these points must line on existing (face) edges, but not the same edge obviously. Nx will then draw a line between these points thus splitting the face.

 

[izax1]

Thanks MeshNinja

But how do I know if an edge belongs to a face? Split face command only asks for a start and end location on edge. When I try stich edge, NX asks for Source edge and Target geometry??? I have to be sure that my mesh is continous. The basic rule of FEM linear analysis.

 

[MeshNinja]

For stitching edges the target geometry can be either another edge or a face. It sounds to me like you want to automatically stich all edges?