In this paper, multidimensional probability model of random fatigue failure was established and the random simulating formula of failure distribution function was deduced.
本文建立随机疲劳失效的多维概率模型。论述推导机械零件疲劳失效分布的随机模拟公式。
Because some products show no failure in the random truncation test period, this paper USES the mean rank order method to calculate the empirical cumulative distribution function.
考虑随机截尾试验中有些试验产品无故障数据出现，提出采用平均秩次法计算经验分布函数。
Exponential distribution: the density function is as follows, (2) in which is the failure -rate of the.
当产品的寿命分布为指数分布时，其密度函数为，(2)其中为指数分布的失效率。
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