Finite Element Analysis on the Fatigue Stresses of a Railway VehicleRoller Bearing
The distributed fatigue stresses of 353130B roller bearing of China freight car with K5type titling bogie are investigated using an elastic-plastic finite element (FE) analysis.Policy of twosteps is applied.First,an integral FE analysis is performed on adapter-bearing-axle-wheel-trackinteractive system.Second,local analysis is applied to the local axle-bearing-adapter part,in whichon the section of axle is with the bound condition obtained from the integral analysis.Wheel contactforce spectrum on a curved railway line by on-line inspection is used for the present study.Previousproposed multivariate quadratic regression approach is applied for transferring the load spectrum tothe dynamic stress spectrum at a special position of the bearing.Results reveal that the rollers,innerandouter-rings of bearing are subjected to distribute axially equivalent stress amplitude.The closerto axle side,the larger the equivalent stress amplitude.The equivalent stress amplitude of outer ring atthe position close to the seal seat is relative larger to that of inner ring.The results are consistencywith the shell failures of the bearings in production.Availability of present study is indicated.
Railway Roller bearing Fatigue Finite element analysis
F.Lin Y.X.Zhao
Institute of Engineering Reliability and Safety,State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China
国际会议
成都
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）