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简答题已知钢板厚度t=12mm,钢板的抗剪强度τ=450MPa,剪床的剪切角υ=4°,试求剪切此钢板的实际剪切力P(tg4°=0.0699)
  • P=0.5t2τ/tgυ
    =0.5×122×450/tg4°
    =0.5×122×450/0.0699
    =46.3×104N
    P=1.2P
    =1.2×46.3×104N
    =55.6×104N
    剪切此板的实际剪切力P是55.6×104N。
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