The present study supposes a single unit and investigates cumulative damage and catastrophic failure models for the unit, in situations where the interarrival times between the shocks, and the magnitudes of the shocks, involve two different stochastic processes. In order to consider two essentially different stochastic processes, integer gamma and Weibull distributions are treated as distributions with two parameters and extensions of exponential distributions. With respect to the cumulative damage models, under the assumption that the interarrival times between shocks follow exponential distributions, the case in which the magnitudes of the shocks follow integer gamma distributions is analyzed. With respect to the catastrophic failure models, the respective cases in which the interarrival times between shocks follow integer gamma and Weibull distributions are discussed. Finally, the study provides some characteristic values for reliability in such models.
翻译:本研究设想了一个单一单元,并调查该单元的累积损害和灾难性故障模型,在冲击与冲击强度之间交错到来的时间涉及两种不同的随机过程的情况下,为了考虑两个基本上不同的随机过程,将整数伽马和韦布尔分布作为具有两个参数的分布和指数分布扩展的指数分布的分布处理。关于累积损害模型,假设两次冲击之间的交错时间在指数分布之后,对冲击在整数伽马分布之后的强度进行分析。关于灾难性失败模型,将讨论冲击与韦布尔分布之间的交错时间在整数伽马分布之后的各自情况。最后,研究为这种模型的可靠性提供了某些特征值。