挖掘机转向器的疲劳破坏概率研究  

Research on Fatigue Damage Probability of an Excavator's Steering Gear

作　　者：刘冬敏[1] 孙振营[1] 姜升 刘宏宇[3] 刘瑞礼[3] 

机构地区：[1]中州大学 [2]郑州市公共交通总公司 [3]河南煤业化工集团有限责任公司

出　　处：《工程机械》2014年第6期44-48,8,共5页Construction Machinery and Equipment

基　　金：河南省重大科技攻关项目(82201343102);河南省郑州市科技攻关项目(083STRF40345-5)

摘　　要：论述无规律应力和无限寿命时,疲劳计算的载荷特性值的处理方案和方法。用破坏概率法研究挖掘机转向器疲劳强度理论和计算方法,绘出概率计算时必用的两组极限载荷系数曲线图,供工程技术人员实际设计时查用。How is a steering gear fatigue damaged.The text describes how to calculate specific load value of fatigue in terms of irregular stress and unlimited life and how to deal with it.Therefore,a damage possibility process was used to study theories and calculation on fatigue strength of an excavator's steering gear to have plotted 2 groups of curves concerning limit load coefficient of possibility computation,which can be used as a reference for engineering technicians and designers in practice.

关 键 词：循环载荷 疲劳强度 破坏概率 应力幅值分布函数 

分 类 号：TU621[建筑科学—建筑技术科学]