摘要
以PW200铁路客车转向架为研究对象,在获得包括长寿命范围在内的结构概率疲劳S-N曲线的基础上,对转向架的关键部位进行了疲劳可靠性分析。应用已有的PW200转向架线路实测应力谱,结合Miner准则,得到了各部位在任意给定可靠度和置信度下的使用寿命。同时,也获得了95%置信度和不同设计寿命下各部位的可靠度。确定了转向架的薄弱部位,提出了改进意见。
Probabilistic fatigue S-N curves, which can cover long fatigue life regime, were proposed for the PW200 bogie of railway passenger car. Then the fatigue reliability analysis was carried out with the bogie. By applying the Miner rule, the fatigue operating life of different critical sections of the bogie in arbitrary survival probability and confidence was obtained with stress spectrums that were gained on site. The survival probability in 95% confidence and different design fatigue life are also achieved. The weak sections of the bogie are determined and some suggestions are proposed for the improvement.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2005年第13期1193-1197,共5页
China Mechanical Engineering
基金
全国优秀博士学位论文作者专项资金资助项目(200234)
国家自然科学基金资助项目(50375130
50323003)
教育部优秀青年教师资助计划资助项目(2101)
牵引动力国家重点实验室开放基金资助项目(0103)
