Good analysis practice must be used and all assumptions and modeling approximations are subject to approval during the SRC process. This includes but is not limited to mechanical properties, mesh size and mesh quality.
AF5.2 A Nastran analysis deck must be submitted electronically with the SRCF and supporting documentation. Nastran does not have to be used for the analysis, but is the required format for the organizer's to review the analysis input decks.
AF5.3 Tubes with wall thickness less than 0.047 inches (or an approved alternative as per rulesT3.5, T3.6, or T3.7) cannot be included in the analysis.
AF5.4 Holes in tubes may be neglected from the overall frame/monocoque model global results. However for each load case, the force and moments at both sides of the tubes need to be applied to a shell or solid model of the tube with the hole or cutout geometry modeled. The tube around the holes and cutouts may not show failure.