焊接转向架结构可靠性疲劳寿命预估方法研究  

Research on the Predicting Method of Reliability Fatigue Life on Welding Bogie Construction

作　　者：吕澎民[1] 严隽耄[1] 

机构地区：[1]兰州铁道学院机械系,西南交通大学机辆所

出　　处：《兰州铁道学院学报》1995年第3期80-86,共7页Journal of Lanzhou Railway University

摘　　要：本文以２０９型焊接转向架构架为研究对象，根据概率统计理论以及疲劳损伤原理，建立了结构在随机载荷谱作用下可靠性疲劳寿命的计算方法．利用实测整理的程序载荷谱和焊接接头疲劳试验数据，对该构架进行了实例计算，并将恒幅载荷下的计算结果进行了试验验证．In this paper,the frame of Type 209 bagie is token as study object. On the basis of probability statistical theory and fatigue damage principle, the calculating method of reliability fatigue life on construction is set up under random load spectrum.Using Statistical random load spectrum and fatigue testing data of welding joints,the reliability fatigue life of this frame is calculated,and the calculation results under constant load cycling are tested and verified.

关 键 词：机车 焊接 转向架 可靠性 疲劳 寿命 

分 类 号：U260.331[机械工程—车辆工程]