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Found 2 results

1. ## Difference Between Feature Angle and Vertex Angle

I am creating a triangle shell mesh for tet-meshing. When using Automesh to mesh elements with QI optimize, one can specify a feature angle and a vertex angle. The feature angle is the angle between element normals. What about the vertex angle? The manual says: " Whenever an element vertex exceeds this angle while adhering to features, the element will be split into two elements with correspondingly smaller vertices." The default angle in the field is 30 degrees. Triangles will always have an angle that is greater than 30 degrees. Someone else in the manual it is described as being similar to the feature angle. I can't find an illustration or more detailed explanation of vertex angle. Can someone clarify this for me, please? Thank you. Phil
2. ## Select elements by face

Dear Sirs In my model there are some sharp feature > 90 degree Feature Angle After change Options>Mesh>Feature Angle to 150 (or 180 maximum) degree, I could not select elements "by face" Whether hypermesh performed incorrect calculation for it? right photo indicate normals of elements are correct in such way they form a >90 degree-angle
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