Partitioning a body for meshing

[saucke]

I am having trouble partitioning a body for meshing. I have used divide face to divide the face of this part into about 60 different sections and I have a 2D mesh on all of these faces exactly the way I want it. Problem is this is a 3D shape. I cannot just extrude the element faces in the element normal direction due to holes on curved surfaces. I'm a bit lost as to what to do here. The part is not sweeapable and it wouldn't keep my mesh profile if it did sweep through.

This all leaves me with needing a way to easily partition bodies so I can sweep the part. I know about the split body command but for the number of pieces I have it won't really work. Especially since the extrude section rules limit what shapes you can use to split things. I resorted to divide face for the 2D mesh because the original faces could be easily divided in a single step step. I want to know if there's an equivalent command to divide face, but for bodies instead (do it all at once from a single sketch)...

Here's some of my partitioning:

http://pbrd.co/14GhGAK

Using divide face this is a single command, with split body I require 8 separate features (4 extrudes and 4 split bodies).

Thanks,

Jeff

 

[saucke]

Forgot to mention I am on NX 8.5

 

[BlasMolero]

Dear Jeff,
SPLIT BODY command is the key, if you want to mesh the geometry using CHEXA 8-nodes solid elements. If not, then you will have to play with nodes & elements only, sweeping the mesh by hand. Before you try to generate a swept mesh on a body, you may first need to simplify the body by subdividing it into smaller bodies. You can use the Split Body command to divide a complex body into several smaller, simpler bodies.

Please note that HEX meshing command allows you to use "Until Target" type to sweep a mesh from a selected source face to a target face that you specify. You can use multiple (not only one, but many faces as your drawing) connected source faces to a single target face. When the mesh is generated, the NX AdvSim software sweeps the mesh of hexahedral elements from the "source faces" to the target face.

In summary, you need to split your body, and use AUTOMATIC MESH MATING "GLUE-COINCIDENT" CONDITIONS in order to mesh complex geometry using CHEXA 3-D solid elements, is a question of experience ... and ART!!.

Best regards,
Blas.

~~~~~~~~~~~~~~~~~~~~~~
Blas Molero Hidalgo
Ingeniero Industrial
Director

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