Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A C.7.7.5. Solid vo i d (G-SO-VO). Description: Internal or external void in a solid model. The logical value of the criterion is true if no internal cavity exists. Effects of condition on CAD data quality: Design and drafting: External voids are generally errors and may cause unexpected results in future model changes. Internal voids may be desired if parts are intended to be hollow. Data exchange: Some solid modeling systems can’t except internal or external voids. Finite element analysis: May produce unwanted mesh elements. Numerically controlled manufacturing: Tool-path generation algorithms may gouge the work piece.
Recommended correction: Delete solid voids unless required by the design. C.7.7.6 Narrow Solid Space (G-SO-TE) Definition: A narrow space outside a solid, between two features with relatively parallel faces. Measurement: Maximum distance between the faces which form the sides of the narrow space. 122