Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A Measurement: The percent change from the area of the native solid to the area of the translated solid. Effects of condition on model-based definition translation: This high-level criterion indicates a significant shape change. C.9.2.3 Different Solid Location (G-SO-DL) Definition: The centroid of a translated solid is different from the centroid of the matching solid in the native model. Measurement: The distance between the centroid of the native solid to the centroid of the translated solid divided by the diagonal distance across the bounding box of the native solid.
Effects of condition on model-based definition translation: This high-level criterion indicates a significant shape change. C.9.2.4 Different Solid Volume (G-SO-DE) Definition: The volume of a translated solid is different from the volume of the matching solid in the native model. Measurement: The percent change from the volume of the native solid to the volume of the translated solid. Effects of condition on model-based definition translation: This high-level criterion indicates a significant shape change. C.9.2.5 Unsewn Solid (G-SO-US) Definition:
A native model solid has no matching solid in the translated model but all of its faces match faces in open shells and/or unsewn faces in the translated model. Measurement: The criterion is false if any solid in the native model satisfies this condition. Effects of condition on model-based definition translation: Many downstream processes require a solid to be defined as a closed volume of manifold faces. For example, mass property calculations and interference analysis. Although the geometric shape of the solid is still defined in the translated model, because it is not a closed volume it has lost significant value for these downstream processes. 141