随机载荷作用下动态应力-强度干涉模型  

Time-dependent Stress-strength Interference Model under Stochastic Stress

作　　者：沈建成[1] 王振兴[1] 权帅峰[1] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《新技术新工艺》2009年第7期62-64,共3页New Technology & New Process

摘　　要：研究了随机应力作用下强度随时间退化时,随时间变化的应力-强度干涉模型。用泊松过程描述应力的作用过程,运用概率微分方程,建立了不考虑强度退化和考虑强度退化时的动态应力-强度干涉模型。在考虑强度退化时,分别将强度退化视为随机变量和随机过程。In this paper, a stress-strength interference model that taking stochastic stress and strength degradation into consider is studied. Then the process of stochastic stress acting is described by the Poisson process, and the time-dependent reliability models of component at the conditions of strength does not degenerate and strength degenerate are built based on the probability equation. The degradation process is treated as a stochastic variable and a stochastic process when considering the strength degradation.

关 键 词：应力-强度干涉模型 泊松过程 强度退化 随机过程 

分 类 号：TB114.3[理学—概率论与数理统计]