Originally posted by guitar at 2005-11-6 10:36 PM:
30x60 2mm 材質 sus304
不鏽鋼的硬度 應該比圓鐵管 或是 方鐵管來的好很多
喔! 原來吉他搖臂是不鏽鋼喔! 孤陋寡聞,拍謝拍謝!
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SUS 304:Yield Stress = 276MPa
Moment of inertia respect to X = 159498 mm^4
Moment of inertia respect to Y = 52978 mm^4
[Yield stress(MPa)] = [Max moment(N-mm)] x [Max distance from neautral
line(mm)] / [Moment of inertia(mm^4)]
=> 276MPa = M x 30 / 159498
=> Mx = 1467382(N-mm) = 1467(N-m) = 150(kg-m)
=> 276MPa = M x 15 / 52978
=> My = 974795(N-mm) = 975(N-m) = 100(kg-m)
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