摘要
结构可靠性的参数估计是机械可靠性的主要问题之一。强度和应力分别为疲劳寿命变量和正态变量的结构模式是一种较常见的模式。研究这一模式结构可靠性的参数估计问题,给出了疲劳强度和正态应力的两个分布中一个分布参数已知另一个分布参数未知时,结构可靠性的点估计和近似区间估计方法,并用Monte Carlo方法对近似区间估计的可靠性进行了模拟研究。
The estimation of structural reliability is one of the main problems about mechanical reliability. The structural model, in which strength follows the Bimbaum-Saunders distribution and stress is a normal variable, is quite common. The research presented in this paper is point estimation and interval estimation of structural reliability in such model, when either the parameters of stress or those of strength are unknown. The proposed interval estimation method is evaluated by Monte-Carlo simulation.
出处
《强度与环境》
2012年第5期50-54,共5页
Structure & Environment Engineering
关键词
结构可靠性
强度
应力
疲劳寿命分布
正态分布
参数估计
structural reliability
strength
stress
Bimbaum-Saunders distribution
normal distribution
parameter estimation
