Quote:
Originally Posted by Nate Laverdure
How do you compensate for the big loss of strength in the HAZs of the 6061? How do you recommend other welded-chassis teams do it? Just blow up the thicknesses and section heights? I assume you don't do any detailed FEA or any post-weld heat treatment.
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Don't quote me on this, but I think the mechanical fasteners and gussets that help to fixture the weldments also make up for some of the strength lost to the welding process.
I haven't played with a model of a welded FRC robot in a long time, but as along as the welds aren't in a really high stress area, I can't see them failing under most FRC conditions unless the wall thickness is really thin, or you're beating the heck out of whatever it is. (See 67's 2012 bridge arm for more insight)