Fatigue Life Prediction of a Railway Bogie Frame
A fatigue life prediction method was introduced.The method was based on thecombination of time domain and frequency domain method.Dynamic model of a complete railwaylocomotive system was established using SIMPACK software.The dynamic load histories acting onthe bogie frame can be obtained by the Multi-Body System (MBS) analysis technique with timeintegration.FEM model of the bogie frame was established by applying ANSYS software.Thenatural frequencies and mode shapes of the frame were calculated and the dangerous nodes in thecritical location were determined using the modal analysis technique.The stresses in dangerous nodeswere calculated with the quasi-static stress/strain technology.PSD of the stresses was generated usingthe Fast Fourier Transformation (FFT).Fatigue life of the bogie frame was evaluated with the Dirliksformulation.Results showed that the calculated life of the analyzed bogie frame could meet the designrequirement.
Multi-Body System FEM Power Spectral Density Fatigue life prediction
R.Deng W.M.Zhai S.N.Xiao
Train and Track Research Institute,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）