The yield strength and rupture strength used in my FEA tests are taken from real world 4130 welded tube data that I and collected and correlated with me FEA results as part of my cap stone project. This was done by first destructive test small welded assemblies, then correlating that data to the same small assembly in FEA (ANSYS). Several different types, styles, tube sizes, and tube shapes were test and correlated...I then used the findings from these small assemblies to analyze a whole chassis. Because in FSAE, we did not have the time or the funds to build a whole chassis just to smash it. I still have all of my data, and used it when I analyzed the phoenix chassis as well as many other welded assemblies
I think we should get this thread back onto MiniFormulaIndy's new F1000 offering.