Editing the Mesh of a Rule Based Surface Mesh Part

This task shows you how to edit the mesh of a rule based surface mesh part using the Mesh Edition toolbar in the Rule Based Surface Mesher editor.

The Rule Based Meshing (RBM) product must be installed.

• Open the Sample06.CATAnalysis document from the samples directory.
• You must enter the Rule Based Surface Mesh editor. See Using the Rule Based Surface Mesh Editor.

1. To edit the topology, click Edit Topology .

   To learn more, see Editing the Topology.

2. To edit the mesh, click Edit Mesh .

   To learn more, see Editing the Mesh.

3. To impose nodes, choose one of the following methods:

   Distribute Nodes on Edges using the Edge Distribution command. Distribute Nodes around a Hole using the Mesh around Hole command. Propagate an Existing Distribution using the Distribution Propagation command. When you remove the mesh, those 1D specifications are lost.

4. To remesh domains with a mesh method different from the one defined in the rule file, select one of the commands available under Frontal Quadrangle Method .

   To learn more about the mesh methods you can use to remesh domains, see Remeshing Domains. When you remove the mesh, those 2D specifications are lost.

5. To lock meshed domains or unlock locked domains, click Lock Domain , and select in sequence the meshed domains you want to lock or the locked domains you want to unlock.

   Locked domains are transparent and cannot be remeshed. Locked domains are not impacted by modifications applied to their neighboring domains.

6. To stop locking or unlocking domains, click Lock Domain again.

7. To remove the generated mesh on domains, click Remove Mesh on Domain , and select the domains in sequence. The mesh must have been generated.

8. To stop removing mesh on domains, click Remove Mesh on Domain again.

9. To split quadrangle elements to improve the mesh quality, click Split Quadrangles .

   The Split Quadrangles dialog box appears. You can switch to the quality visualization mode for a better visualization. See Visualizing a Rule Based Surface Mesh Part. In the Element quality list, select one of the following: Bad to split only the quadrangle elements with a bad mesh quality. Bad and poor to split quadrangle elements with a bad or poor mesh quality. Poor to split only the quadrangle elements with a poor mesh quality. All to split all the quadrangle elements. Click OK. A quadrangle element is split only if the two resulting elements have a better mesh quality.