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一、不可测机械零件载荷谱间接确定的理论根据工程机械、矿山机械、农业机械、金属切削机床和各种车辆等某些传动零件可以用电测法记录典型工况下的载荷时间历程,然后用概率统计方法直接得到被测另件的载荷谱,但另外一些非外露传动另件却不能直接测量,因而不能直接得到它的载荷谱。本文通过可测零件载荷与不可测零件之间的线性关系,用概率论的有关公式,推导出不可测量零件的载荷谱,并根据这个载荷谱对不可测量零件进行疲劳强度计算。根据概率论证明:设f(x)是定义在随机变量ξ的一切可能值x的集合上的函数。所
First, the unmeasured mechanical parts load spectrum indirectly determine the theory According to engineering machinery, mining machinery, agricultural machinery, metal cutting machine tools and other vehicles and some other transmission components can be measured using electrical measurements under typical load time history, and then Probability and statistics method to get the measured component of the load spectrum directly, but some other non-exposed transmission can not be measured directly, it can not directly get its load spectrum. In this paper, the load spectrum of the unmeasured part is deduced by the linear relationship between the load of the measurable part and the unmeasured part. The fatigue strength of the unmeasured part is calculated based on the load spectrum. According to probability theory, we prove that f (x) is a function defined on a set of all possible values x of a random variable ξ. The