Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A C.7.7.3. Multi-volume solid (G-SO-MU). Description: A model contains multiple solid bodies that do not intersect. Effects of condition on CAD data quality: Design and drafting: Multi-body solid models are increasingly employed by CAD software. If used intentionally, they are not indicative of errors. Not all CAD software supports multi-volume solids. Data exchange: If the target system does not support multi-volume solids, geometry may be lost. Finite element analysis: No effect on FEA unless the system does not support multi-body solids. Numerically controlled manufacturing:
No effect on NC unless the system does not support multi- volume solids. Recommended correction: Eliminate files that contain multiple volumes before translating to systems that don’t support multi-body parts. C.7.7.4. Tiny solid (G-SO-TI). Definition: The overall extent of the solid is the below permissible minimum. Effects of condition on CAD data quality: Design or drafting: May be indicative of part interference or design errors. Data exchange: Data may be lost during translation. Finite element analysis: Unwanted mesh elements may be produced. Numerically controlled manufacturing: Tiny solids can’t be manufactured. Recommended correction: Remove the tiny solid.
Rebuild adjacent bodies if necessary. 121