复杂载荷分布参数的确定及疲劳强度可靠度计算方法  

Determination of complicated load distribution parameters and calculation method of fatigue strength reliabtlity

作　　者：谢里阳[1] 徐灏[1] 王德俊[1] 

机构地区：[1]东北工学院

出　　处：《机械设计》1992年第2期15-18,共4页Journal of Machine Design

摘　　要：材料强度分布和载荷分布是可靠性设计中的两个基本问题。强度分布可以由材料试验得出,而载荷分布则须由对载荷谱进行统计分析后确定。疲劳强度可靠性设计与静强度可靠性设计不同,如果采用与静强度可靠性设计类似的方法处理疲劳载荷谱,得出的载荷分布参数则有可能是错误的。本文在数理统计分析基础上提出一种用于疲劳强度可靠性设计计算的确定复杂载荷分布参数的方法以及相应的疲劳强度可靠度计算方法。Strength distribution and load distribution on materials of structures are two basic problems of reliability desion. Strength distribution can be detormined by material experiment,while load distribution must be obtained through statistical analysis to the complex load history. The reliability design for batigue strength and that for static strength is guite defferent. If one treats fatigue load distribution problem using the similar method as that used in static strength reliability problem. the load distribution parameters obtained in such a way are usually incorrect. Based on mathematical statistics, the present paper proposes a method of determining complex load destribution parameter and the corresponding reliability calculation method which can be applied to structure fatigue strength reliability design and calculation

关 键 词：载荷 分布参数 疲劳强度 可靠度 

分 类 号：TH123[机械工程—机械设计及理论]