I'm looking to construct a something with hollow steel tubing (e.g. 10ga 2"x3" rectangular tubing) suspended horizontally welded to an outer frame on both sides.
I've already calculated the deflection given the loads it'll experience.
However, I know there'll be a point as I increase the load where the sidewalls will buckle/crinkle, and this point could be lower than the load where the metal bends too much.
How do I calculate this load?
I've done lots of searches, but nearly everything I can find regarding buckling loads is for metal oriented as a column and compressed, and that's not the case for this metal.