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本文是对《车钩拉仲破坏强度的确定》一文的继续讨论,对如何利用数理统计正确制定标准提出了自己的看法,笔者对《车钩拉伸破坏强度的确定》一文中关于车钩纵向力的确定和概率系数η的求得以及几个其他问题提出了不同的见解,认为当用概率乘法定理以回归方程推断纵向力时,其精确度是较差的。因此建议开展列车的纵向动力学试验,以掌握车钧的实际受力频谱。
This article is a continuation of the article entitled “Determining the Launching Interturn Damage Strength of a Coupler” and puts forward my own opinion on how to use the mathematical statistics to formulate the correct standards. The author’s article on the determination of the longitudinal force of a coupler in the article “Determining the Tensile Breakdown Strength of a Coupler” And the probability coefficient η and several other issues put forward different opinions, that the probability multiplication theorem regression equation to infer the longitudinal force, the accuracy is poor. Therefore, it is suggested to carry out the longitudinal dynamics test of the train to grasp the actual force spectrum of Chejun.