中国机械工程2025，Vol.36Issue(10)：2232-2240,9.DOI:10.3969/j.issn.1004-132X.2025.10.009
磁悬浮列车首次穿越失效可靠性研究
Research on First-passage failure and Reliability Analysis of Maglev Trains
摘要
Abstract
In order to obtain the first-passage failure characteristics of maglev trains,a dynamics model was established for electromagnetic suspension trains under the action of parametric excitation and external excitation,the first-passage reliability function was established under the framework of Hamilton's theory,and the backward Kolmogorov equation was solved numerically by using a new type of Crank-Nicolson difference method to investigate the effects of the initial energy,stochastic external excitation,sto-chastic parametric excitation,low stochastic excitation and train speed on the first-passage of maglev trains.The results show that the increase of initial energy will make the first-passage time earlier.The in-crease of stochastic external excitation and stochastic parametric excitation will make the average first-passage time decrease,where the influences of stochastic external excitation on the average first-passage time are larger than that of stochastic parametric excitation,and the first-passage hardly occurs under the ac-tion of low stochastic excitation.As the train speed increases,the average first-passage time decreases and the maximum probability of first-passage failure increases.关键词
磁悬浮列车/随机激励/首次穿越/可靠性Key words
maglev train/random excitation/first-passage failure/reliability分类
交通工程引用本文复制引用
刘伟渭,李阔,余玺,唐爽权..磁悬浮列车首次穿越失效可靠性研究[J].中国机械工程,2025,36(10):2232-2240,9.基金项目
国家自然科学基金(51875481) （51875481）
四川省科技计划重点研发项目(2023YFN0079) （2023YFN0079）
