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Geometry Analysis Options

You can specify various options before starting the analysis. The options available are:
Short Edges Short edges are edges with a very short length.

Short Edge


smalledge.gif

To check for short edges, select Insignificant geometry and Short edges then set the Edge Length. All edges that are shorter than the specified value are short edges.

Small Faces Small faces are faces where:
  • all edges are below a specified length and
  • the area of the face is less than the square of the specified length of an edge

smallface.gif

The two ends of the cylinder are defined as small faces.

To check for small faces, select Insignificant geometry and Small faces then set the maximum edge length in the All Edge Lengths box. Faces with all edges below the specified length are small faces.

Silver Faces Sliver faces are faces with a very high aspect ratio (the ratio of length to width). A face is a sliver face if its area is less than the limiting area W*((P/2)-W), where W is the width specified by the user, and P is the face perimeter.

Silver Face


sliverface.gif

To check for sliver faces, select Insignificant geometry and Sliver faces then set the Face Width. All faces that have an area less than the limiting area are sliver faces.

Knife Edges A sharp edge or knife edge is an edge where the angle between two adjacent faces is acute. When a part with knife edges is meshed in a finite element program, the mesh in the vicinity of the knife edge can be undesirably dense.

Knife Edge


knifeedge.gif

To check for knife edges, select Sharp angles and Knife edges and set the Face Angle. If there are two adjacent faces that intersect at an angle below the specified value, the edge between the two faces is a knife edge.

Knife Vertices A sharp vertex or knife vertex is a vertex where the angle between two adjacent edges is acute. Endpoints of knife edges are often knife vertices.

Knife Vertices


knifevertex.gif

To check for knife vertices, select Sharp angles and Knife vertices and set the Edge Angle. If there are two adjacent edges that intersect at an angle below the specified value, the vertex between the two edges is a knife vertex.

Discontinuous Faces To check for discontinuous faces, select Discontinuous geometry and Faces. All faces in the part where the underlying surface geometry has position or tangent discontinuity are discontinuous faces. Position or tangent discontinuity can be created when a part is imported.
Discontinuous Edges To check for discontinuous edges, select Discontinuous geometry and Edges. All edges in the part where the underlying curve geometry has position or tangent discontinuity are discontinuous edges.


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