✔ 最佳答案
a = Axial Distance = 268 cmb = Tyre Distance = 154 cmw = Weight = Car + 5 Persons + Others= 1385 + 300 + 115= 1800 kg
S = Ultimate Tensile Strength = 4000 kg/cm^2n = Safty Factor = 2M = Bending Moment= 1800 * 268 / 2= 241200 kg.cm
Z = Sectioal Modulus= 154 * t^2 / 6= 25.6667 t^2= M*n / S= 241200*2 / 4000= 120.6
=> t^2 = 120.6 / 25.66667=> t = 2.17 cm * 2.54"/cm= 0.853" * 8分/"= 7分鋼板= Answer
2015-07-04 07:12:08 補充:
修改: t = 2.17 cm / 2.54"/cm = 0.853"
如何施工:
分割成2 塊鋼板 = 270 cm * 80 cm * 2塊
可以順利抬進來
每塊 = 47.52 kg