Department of Defense MIL-STD-31000A — MIL-STD-31000A Technical Data Packages Standard — DoD Manual PDF

Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A Effects of condition on CAD data quality: Design and drafting: Fillets, rounds, surface offsets, projections, and cross sections may fail. Data exchange: Face-trimming errors may occur. Finite element analysis: Excessive small elements may be generated. Numerically controlled manufacturing: Tool paths may fail. Excessively small tools are required to mill surfaces. Recommended correction: Replace the defective surface with one of appropriate curvature radius. C.7.3. Edge criteria. C.7.3.1. Tiny edge (G-ED-TI). Definition: Length of an edge curve or line segment falls below acceptable minimum.

Effects of condition on CAD data quality: Design and drafting: Solid entities, offset entities, fillets, rounds, and cross sections may fail. Use of the tiny edge in a sweep may produce a narrow patch or surface. Data exchange: Topological information may be lost due to differences in tolerances between systems. Solid entities may fail. Only untrimmed entities may be translated. Finite element analysis: Excessive small elements may be generated. Numerically controlled manufacturing: Tool paths may fail. Recommended correction: Delete the tiny edge curve and extend or trim adjacent curves to close the edge loop. 102