Ok so if it's an internal stowage compartment door, look at ac 25-17.
Specifically section 104.
It provides guidance as to where dual latching is appropriate.
Is the door large enough that it would be prudent to have 2 latches for redundancy?
If you only have 1 latch to play with, then I think the best you could do is determine the centre of pressure for the applied loads then place the latch on the edge adjacent to that.
Dca. For ref, in Mccombs supplement to bruhn Appendix A, there is generalised guidance for estimating a rivet's tensile allowable for a specific sheet gage (secondary tensile load applications only) as 20% of the joint shear allowable.
Mccombs material was sourced mostly from Chance Vought...
For conventional airframe fasteners - once you understand the requirements of your specific- a reasonable starting point is the pictorial guides in faa ac43-13b, use this to develop a shortlist of potential fastener specs for your specific application. Since some of the the material in ac43 13...
When effecting your modification on the OEMs FE mesh, did you actually change the topology (add delete elements)? Or did you only change element properties?
Was the OEMs model an internal loads model? Was it intended for a modal solution?
Do-160 is not a 'requirement' but can be best described as an faa-recognised means of demonstrating the suitability of systems & equipment to function properly (if required) or not create a hazard when subject to the intended operating environment. The requirement driving this is 2x.1309a (or...
Sw: in the context of part 25 composite primary structures, aren't ohc design values used for static strength in order to envelope the effect of bvid, and therefore the static strength check supports the overall 'no detrimental growth' dt philosophy?
Presumably with the "low level of shear", all the panel load components are fairly low and so the panel remains stable to ultimate load? Otherwise you might want to consider what happens to your doubler when the panel buckles, or reinforce the panel such that it doesn't.
Have a read of this.
Might provide a bit more friendly guidance than the d6 doc.
https://gama.aero/documents/gama-publication-13-acceptable-practices-document-cabin-interior-monument-structural-substantiation-method-version-1-0/
Rb: yes, each subassy requires its own reserved range of node/element/prop numbers.
Model config control is a significant task even to this day, though assembling a modular model is substantially faster now.
