电子科技大学学报Issue(2)：306-310,5.DOI:10.3969/j.issn.1001-0548.2013.02.024
周期性疲劳载荷作用下的应力-强度干涉模型
Stress-Strength Interference Model under Circular Fatigue Loads
摘要
Abstract
The conventional stress-strength interference (SSI) model is a basic model for reliability analysis of mechanical components. In this model, the component reliability is defined as the probability of the strength random variable larger than the stress random variable. But for a component under circular fatigue loads conditions, its reliability can not be calculated directly by using the SSI model. To evaluate the structural reliability under circular fatigue loads, an expression of residual strength under circular fatigue loads is derived firstly in the assumption that the initial strength is a random variable which follows any distribution. Then, a stress-strength interference model under circular fatigue loads is proposed by employing the universal generating function to calculate the probability characteristics of a function constituted by residual strength and fatigue loads. Finally, the fatigue experimental data of 45# steel is used to testify and analyze the proposed model. The results indicate that the proposed model can be used to evaluate the structural reliability under circular fatigue loads.关键词
疲劳载荷/可靠度/剩余强度/通用生成函数Key words
fatigue load/reliability/residual strength/universal generating function分类
通用工业技术引用本文复制引用
安宗文,郑堃,黄建龙..周期性疲劳载荷作用下的应力-强度干涉模型[J].电子科技大学学报,2013,(2):306-310,5.基金项目
国家自然科学基金(51265025) （51265025）
