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本文的主要结论是:1.证明以往钩杆静强度计算时按一点屈服作为设计准则是不恰当的,因为钩杆静强度不受局部峰值应力的影响;2.给出了钩杆在静负荷时的强度条件;3.给出了钩杆试样的疲劳曲线和简便的疲劳强度计算方法;4.验证了目前我国设计的钩杆承载能力是富裕的,实际承载能力应按新的计算方法决定。
The main conclusions of this paper are as follows: 1. It is not appropriate to prove that the yield strength of the hook is a design criterion by using the yield point as the static strength of the hook is not affected by the local peak stress.2. 3. The fatigue curve and simple calculation method of the fatigue strength of the hook rod sample are given; 4. It is verified that the carrying capacity of the hook rod designed in our country is wealthy, and the actual carrying capacity should be calculated according to the new calculation method Decided.