Netgen Generates Mesh only with Only Element size of 2...it fails With other sizes

hooshsim

I have a part that I can only mesh with max. element size of 2 using Netgen. It fails to generate meshes with all other element sizes. I would like to reduce the element size so I can have 2 or 3 elements in the thickness direction.
I appreciate your help - Hooshsim

disla

Could you post the step file?

hooshsim

Here you, disla

disla

Hi Hooshim

This Step is suitable to extrude or even revolve.
Use a good quality algorithm to get a surface mesh.
I suggest a Gmsh custom command.

Mesh.Algorithm = 11;
Mesh.MeshSizeMax = 2;
Mesh.MeshSizeMin = 2;
Mesh.MeshSizeFactor = .5;
Mesh.ElementOrder=2;
Mesh 2;

Once meshed, hallow, clean one of the surfaces and extrude the remaining one with the desired number of elements.

hooshsim

Prefer using Netgen. Any ideas why I can mesh?

disla

You could do that with Netgen too. Just set up the Quad dominant.

The minimum number of elements per curvature and edge can’t be less than 1.

By other hand, your step has different parts. Try merging them before exporting.
It shows some intersecting elements.

hooshsim

Thanks disla. Will give it a try