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Geometry Tolerance Settings Dialog Box
When you click Refine Model and then click the arrow next to AutoGEM, click Geometry Tolerance. The Geometry Tolerance Settings dialog box opens.
This dialog box includes the following items:
Minimum edge length—Specify the minimum length for the edges in your model. Creo Simulate retains all the edges whose length exceeds the minimum and merges the end points of any edge whose length is less than the minimum into a single node. The size of the node corresponds to the length of the original edge. You can specify the minimum length of an edge as an absolute or relative value.
Minimum surface dimension—Specify the dimensions of the surfaces in your model. Creo Simulate retains all the surfaces whose dimensions exceed the minimum and merges each of the surfaces whose dimensions are less than the minimum into an edge whose length represents the original surface. If the resulting edge is shorter than the value that appears in the Minimum edge length field, Creo Simulate merges the surface into a vertex instead. You can specify the minimum surface dimension as an absolute or relative value.
Minimum cusp angle—Specify the minimum angle of the cusp formed where two arcs meet or an arc meets an edge or surface. Creo Simulate eliminates any angle less than this value by moving the node at the end of the surfaces or edges to the nearest location that forms an acceptable angle. In effect, Creo Simulate shortens the surfaces or edges. You specify the minimum angle value in degrees. While Creo Simulate accepts negative values in this field, negative values typically result in poor geometry and meshing failures. You can eliminate the negative angles by specifying a value of zero in the Minimum cusp angle field.
Merge tolerance—Specify the distance below which Creo Simulate will merge mated or overlapping surfaces in midsurface assemblies. When determining how to treat mated or overlapping surfaces in a midsurface assembly, Creo Simulate uses this value as a guideline. If the mated or overlapping surface is closer than the specified distance, Creo Simulate merges the surfaces. If the surfaces are further apart, Creo Simulate creates automatic midsurface connections instead. You can specify the merge tolerance as an absolute or relative value.
Default—Return to the default settings for the Geometry Tolerance Settings dialog box.