Simulation and analysis of wheel out-of-roundness wear of high-speed train

被引：0
|
作者：
Luo R. [1 ]
Zeng J. [1 ]
Wu P.-B. [1 ]
Dai H.-Y. [1 ]
机构：
[1] State Key Laboratory of Traction Power, Southwest Jiaotong University
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2010年 / 32卷 / 05期
关键词：
Coupled model; Dynamics; High-speed train; Wear prediction; Wheel out-of-roundness;
D O I：
10.3969/j.issn.1001-8360.2010.05.006
中图分类号：
学科分类号：
摘要：
In order to study the development of wheel out-of-roundness (OOR) and its influence on the dynamic performance of high-speed trains, the coupled model incorporating the vehicle-track system dynamics and OOR wear prediction is set up. The nonlinear primary and secondary suspension forces, nonlinear wheel-rail contact geometry and creep forces are considered in the model. The first bending and torsional modes of the wheelset are also taken into account. The track model is composed of the rails taken as the Euler beam and the rigid sleepers. It is assumed that the shape of wheel profile is unchanged and only the wheel OOR changes, and the development of the wheel OOR is only caused by wheel-rail wear. The wheel-rail normal force and wheel-rail contact geometry are calculated by using the Herz nonlinear spring and the contact line method respectively. Numerical simulation is adopted to study the development of the wheel OOR and its influence on vehicle dynamic performance. It can be seen from the simulation results that the wheel OOR will result in large wheel-rail vertical forces which are strongly related to the OOR order, amplitude and vehicle running speed. The vibration frequency caused by OOR is normally quite high so that the carbody ride index is not often so sensitive to the wheel OOR, but the wheel OOR will increase the carbody responses and affect the passenger ride comfort. The wheel OOR will be intensified by wear along with increasing of the running distance. The track irregularity inputs will not change the development tendency of the wheel OOR.
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页码：30 / 35
页数：5
相关论文
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