15 December 2018
- Last edited 15 December 2018
Let me describe what I think you have done, so you can correct me if I am wrong. You have:
- a cast metal cylinder physical sample to test fatigue
- done a CT scan of that volume of metal
- reconstructed the surface of a void inside the metal cylinder
- exported an iges file of the surface of the void
- created solid geometry of the metal cylinder in SpaceClaim
- imported the iges file of the void into SpaceClaim
- converted the surface model of the void into a solid body
- used the Combine tool in SpaceClaim to remove the void body from the cylinder body
Now you want to do a mesh refinement study. You need to:
- Create a Coordinate System, use Global Coordinates to get the Origin approx. at the center of your void
- Add a Sizing mesh control to the body of the metal cylinder with the void
- Change the Sizing Type to Sphere of Influence
- Select the Coordinate System made above
- Type an Element Size
- Type a Sphere Radius
Which part is not working for you?
I would add that in SpaceClaim, you can merge some of the facets on the void surface that are not near the "edges" of the void and are on the larger side "face" of the void. This will help reduce the element count in the model.
For a mesh refinement study, the mesh size in the sphere of influence should start at the size of the facets of the void because your initial mesh starts at that size. You only get meaningful results when the element size is smaller than the facet size.