# Mesh hard points on faces

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 March 13, 2005, 22:46 Mesh hard points on faces #1 Ashton Peters Guest   Posts: n/a I am trying to create a 3D model (let's say it's a cylinder), meshed with simple tets (i.e. triangles on the faces). I want to be able to specify that there will be a nodal point at a specific location on the surface of the cylinder. Is there a way to somehow 'merge' a vertex into a face so that Gambit will put a node at a specific, user-defined location? I know I can move the nodes on a face after it has been meshed, but if I have several (possibly hundreds of) points on the face that I want to be aligned with nodes it would be far too tedious to move them all individually. This would seem to me to be a basic functionality of meshing software, but I can't seem to find how to do it in Gambit. Thanks for any help you can offer. Ashton Peters Centre for Bioeingineering University of Canterbury Christchurch, NZ

 March 14, 2005, 05:27 Re: Mesh hard points on faces #2 Luca Guest   Posts: n/a if you split your boundary where you want a node to be created, then when you mesh you'll ha a node rigth there...Luca

 March 14, 2005, 16:30 Re: Mesh hard points on faces #3 Ashton Peters Guest   Posts: n/a Thanks for the reply. I don't quite understand what you mean though. I don't want a node at a specific location along an edge, I want a node at a specific location somewhere on a face (i.e. not along any existing edge). If this is possible by "splitting the boundary", please let me know how. Ashton

 March 15, 2005, 04:06 Re: Mesh hard points on faces #4 Luca Guest   Posts: n/a So you can split the surface into smaller surfaces. Luca

 March 15, 2005, 16:43 Re: Mesh hard points on faces #5 Ashton Peters Guest   Posts: n/a Ok, I think I know what you are meaning now. However, this raises another problem. If I split the surface into smaller surfaces, sure, I can get a node at a specified internal vertex. The problem is then I also have additional edges within the area that the mesh will line up with. I don't want the mesh to align itself with internal edges within an area, rather I just want to specify a single point within the area. I am beginning to think this can't be done with Gambit... Ashton

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