Matching perimeter nodes of two volumes

Discussion about meshing issues.

Matching perimeter nodes of two volumes

Postby Cubit User » Fri Jun 15, 2012 9:14 am

Hello:

I am trying to use Cubit to generate a mesh for a problem very similar to the classic plate with a hole problem. In my problem, however, the hole is actually another solid material that is different from the plate.

I have been trying to do this by first making the plate (create brick.....), then creating the hole (create cylinder....), then subtracting the cylinder from the plate (subtract 2 from 1) to make the hole, and then add another solid cylinder to fill in the hole. However, the problem I run into is that there are now 2 sets of nodes around the perimeter of the hole - those from the plate, and those from the second cylinder. They occupy the same physical positions, but have different node numbers.

My questions are:
1. How can I get the node numbers around the perimeter of the "hole" to be the same?
2. Is there any way I can instead of doing the whole geometry, do an axisymmetric model (i.e. model only the top right 1/4 of the geometry)?

Thanks very much
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Re: Matching perimeter nodes of two volumes

Postby csimsoft Moderator » Fri Jun 15, 2012 9:18 am

Here are a few ideas.

1. To remove the second set of nodes around the perimeter use "merge all" after creating the plate with hole and cylinder. This will ensure that there are no duplicate nodes in your mesh.

2. To mesh part of the geometry, use webcut options to cut the two volumes using Cartesian planes. Then delete all volumes except 1/4 of the original domain.
csimsoft
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