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Engineering
Mechanical Engineering
Moment of inertia question for two plates welded together
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[QUOTE="Lnewqban, post: 6861667, member: 673625"] The weld is calculated based on its cross-area times length besides yield stress. If we are still discussing two plates of Aluminum, both being 2" tall, and 1/2" thick, please consider how small this cross-section, which resists bending is. Any welding or drilling will weaken the main 2" tall and 1/2" thick aluminum plate to some degree. Unless the side plate is running most of the span, the single plate cross-sections located immediately next to the second plate will be exposed to more or less the same bending moment and lateral buckling. Please, research [B]wing aluminum spar[/B] for examples of efficient small beams in restricted spaces. Example: [URL]https://www.google.com/search?q=aluminum+wing+spar&tbm=isch&ved=2ahUKEwih3MvA-cL9AhWuzskDHfNzDbkQ2-cCegQIABAA&oq=aluminum+wing+spar&gs_lcp=CgNpbWcQAzIFCAAQgAQ6BggAEAUQHjoGCAAQCBAeOgQIABAeOgcIABCABBAYUNEQWJAnYJ8taABwAHgAgAGMAYgB6QaSAQM3LjOYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=75MDZOGoJa6dp84P8-e1yAs&bih=684&biw=1007[/URL] Please, see also: [URL]https://en.wikipedia.org/wiki/Spar_%28aeronautics%29[/URL] [/QUOTE]
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Moment of inertia question for two plates welded together
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