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Distorted Hex8 mesh inside triparametric solid

Distorted Hex8 mesh inside triparametric solid

Distorted Hex8 mesh inside triparametric solid

I am having trouble meshing a geometry that is composed of several solids.  Each solid is triparametric so they are easy to mesh with isomesh.  However, I am having some problems.  First, in some of the solids, the nodes are matching at the edges of abutting solids, but not the surfaces.  Some of the solids have very distorted meshes inside of them, such as in the attached picture.  Does anybody know the solution to this?  Is there any way that I can constrain the mesh lines to constant x or z planes?

RE: Distorted Hex8 mesh inside triparametric solid

I have seen this very occasionally. In this case I rebuild the solid from surfaces and re-mesh. If the problem remains it is because one of the surfaces is a bit wierd in which case I refit the surfaces and try again. Useful commands are:

Edit solid disassemble
Create solid faces
edit surface refit


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