Mesh - Manual - Summary PropertyManager

The Summary PropertyManager lists mesh parameters that measure the quality of the mesh.

To access the Mesh - Manual - Summary PropertyManger:

  1. Create a solid or shell mesh with the Manual method.

  2. The Summary PropertyManager appears after you create the surface mesh.

A good quality mesh is very important for the accuracy of the results. Mesh errors are highlighted in red. You must fix all surface mesh errors using the mesh repair tools in the Edit Mesh PropertyManager, before you can proceed with the analysis.

Summary

Waterproof Identifies missing elements (or holes) in the mesh.

Yes

The mesh is waterproof with no holes.

No

Geometric entities are omitted from the mesh.

Use Mesh Triangles > Fill Hole or Mesh Triangles > Auto Fill Holes to reconstruct missing elements.
Number of Mesh Group Identifies the number of distinct meshed domains in a model.

For example, if you identified a geometric body as cavity and you add a runner, the number of mesh groups is two. You can have two mesh groups for a single part when the part has two distinct bodies which are not merged.

Use Mesh Analysis > Group to delete unwanted geometry from the mesh.
Element Intersections Identifies where elements are overlapping. A solid mesh cannot be created when intersection elements exist.
  • Use the Mesh Analysis > Topology tool to view and delete the intersecting elements.
  • Use Mesh Triangles > Fill Hole or Mesh Triangles > Auto Fill Holes to reconstruct the intersecting elements.
Non-manifold Identifies elements that share a boundary with more than two elements.
You can delete these elements with the Mesh Analysis > Topology tool.
Non-manifold. Three triangles share a common edge (red). Manifold. Two triangles share a common edge (red).
Bad Elements Shows the percentage of distorted elements with poor aspect ratios over the total number of mesh elements.

Elements with an aspect ratio between 8 and 20 are characterized as Bad Elements.

These elements should be fixed, especially when the percentage number exceeds 15.
Very Bad Elements Shows the percentage of very bad elements over the total number of mesh elements.

Elements with an aspect ratio above 20 are characterized as Very Bad Elements.

Max Aspect Ratio Shows the maximum aspect ratio in a model.

The aspect ratio of an element is defined as the ratio of the longest edge to the shortest edge of a triangle. By definition, the aspect ratio of a perfect triangle element is 1.0. A higher aspect ratio indicates poorer element quality.

Use the Mesh Analysis > Quality tool to view contour plots of elements based on their aspect ratio.
Unmatched Elements Identifies elements at the boundaries of touching or intersecting geometric entities that do not share common nodes. These errors are common with insert molding or over-molding, where two domains meet.

In a compatible mesh, touching entities are meshed with a pattern that conforms to a node-to-node correspondence between the mesh of each entity; otherwise, the mesh is considered incompatible with unmatched elements.