Title: Investigation of Non-linear Effects on High-speed Vehicle Lateral Stability
Abstract: In order to investigate the non-linear effects of the high-speed bogie on lateral stability and contrast the dynamical performance of the four wheel profile designs,the non-linear model of the high-speed bogie was established according to the structural features of the CRH5 trainset bogies.Compared with the model applied by ALSTOM,the non-linear model of the high-speed bogie takes into full consideration the non-linear longitudinal constraint stiffness of the wheelset produced by the primary positioning device.The critical velocities of both models are consistent fundamentally,but there is some defference in their wheel-rail interaction.Comparatively,the non-linear model of the high-speed bogie represents better equilibrium between lateral wheelset forces and longitudinal creep forces,which is in favour of non-linear simulation analysis of narrow curve negotiation.Analysis of dynamical simulation data shows as follows: Wheel tread LMA is able to satisfy the requirements of the 300 km/h ~ 350 km/h high-speed wheel-rail technology,and wheel tread XP55 is able to reach 250 km/h ~300 km/h;the main issue of Wheel tread LM is that the larger equivalent conicity may cause the bigger lateral wheel-rail force,and wheel tread S1002 has the severe problem of harmful wheel-rail wear.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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