CPYRA Element Checks and Default Bound Values

CPYRA 1st-order (5-noded) Element Checks

The following qualities of the CPYRA 1st-order element are checked:

·        Aspect Ratio

The aspect ratio of a CPYRA 1st-order element is defined as the maximum of the aspect ratios of its four triangular faces and the quadrilateral base face. Each triangular face is treated as a CTRIA3 element and the quadrilateral face as a CQUAD4 element.

·        Face Skew Angle

The face skew angle of a CPYRA 1st-order element is defined as the maximum of the skew angles of its four triangular faces and the quadrilateral base face. Each triangular face is treated as a CTRIA3 element and the quadrilateral face as a CQUAD4 element.

·        Vertex Angle

The same vertex angle check is performed for all of the faces, and each is treated as a triangular (CTRIA3) or quadrilateral (CQUAD4) element. The minimum and maximum values reported for the element.

·        Face Warpage

The face skew angle of a CPYRA 1st-order element is defined as the warpage of its quadrilateral base face, which is treated as a CQUAD4 element.

CPYRA 2nd-order (13-noded) Element Checks

The following qualities of the CPYRA 2nd-order element are checked:

·        Aspect Ratio

This quality is calculated using only the corner nodes. Its definition is the same as that used for the CPYRA 1st-order element.

·        Face Skew Angle

This quality is calculated using only the corner nodes. Its definition is the same as that used for the CPYRA 1st-order element.

·        Vertex Angle

This quality is calculated using only the corner nodes. Its definition is the same as that used for the CPYRA 1st-order element.

·        Face Warpage

This quality is calculated using only the corner nodes. Its definition is the same as that used for the CPYRA 1st-order element.

·        Hoe Normal Offset

The hoe normal offset is the maximum of its edges normal offset values. See the definition of hoe normal offset of 3-node edge.

·        Hoe Tangent Offset

The hoe tangent offset is the maximum of its edges tangent offset values. See the definition of hoe tangent offset of 3-node edge.

CPYRA Default Bounds

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Element Quality Check