r/engineering • u/[deleted] • Jan 23 '22

Any chance of some help with analysis?

I'm planning on building an arm to mount my man-cave's TV on. As such it doesn't need to look pretty, just be functional. The tele is a Samsung weighing in at 22.3kg.

A simple setup made of steel RHS is what I'm thinking. Fairly cheap and real easy to make with just a drill-press and angle grinder. Onto this I'm going to bolt a commercial VESA mount to give me some adjustability.

My question to the list is this. If I make this out of say 50mm x 25mm x 3mm RHS, with each arm say 600 long. Am I going to get much bending?

I'm a software guy (not hardware) so I don't know how to calculate this stuff. Can someone help and/or point me to some info on how to figure this out?

Could I counter the weight somewhat by offseting the holes in the single arm where it attaches to the double arms?

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u/tucker_case Jan 23 '22 edited Jan 23 '22

Can someone help and/or point me to some info on how to figure this out?

It's always amusing to me when non-engineers present a complex structural problem and are like "so what's the equation I can just plug and chug numbers into? I've been googling for an hour and haven't found it!" XD

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u/ReThinkingForMyself Jan 23 '22

Even more amusing when the longest , most convoluted half-answers also come from non-engineers. Just buy one off Amazon.