I've got what is basically a hammock frame design, made from tubing, that I'm trying to make as light as possible, while meeting a necessary strength safety factor.
I've hired a few different mechanical engineers to tell me if the design is feasible and, if so, what the best combination of aluminum/steel and diameter/wall thickness would be optimal.
Before hiring anyone, I went through a few iterations of a physical prototype and have been able to see some of the problems when a load is applied.
The problem is that some of those problems aren't showing up on the FEAs, and, additionally, there seems to be a lack of familiarity with the different aluminums and steels (comparative strengths, weldability, etc.).
Is this more of a job for a structural engineer, or am I just not hiring good enough mechanical engineers?