![]() ![]() ![]() Higher yield steels are uncooperative at best! With 3/8" at that diameter low carbon steel I think I would do the same as what you are doing. ![]() Remember the inside surface is being compressed and the outside surface is being stretched, so your material type plays a big role in the success of a given calculation. The thicker the material, the more difficult it is to get the exact size. I don't have any of my old fab notes here, but I used to have a formula for everything every type of material, thickness, and forming method. For example, I used to calculate sheet metal (under 1/8") using a completely different formula and never taking the NA into consideration (the number is just too small to make a difference, especially for plain old sheet steels). Material thickness counts for a lot, though. There are probably as many different methods for calculating BA as I have fingers and toes! I always use the neutral axis (theoretical centerline of the material thickness), because that's how I learned. ![]()
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