An investigation into the mechanism of the polygonal wear of metro train wheels and its effect on the dynamic behaviour of a wheel/rail system
An investigation into the mechanism of the polygonal wear of metro train wheels and its effect on the dynamic behaviour of a wheel/rail system
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DOI：
10.1080/00423114.2012.695022
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发表时间：
2012-01-01
影响因子：
3.6
通讯作者：
Ling, Liang
中科院分区：
文献类型：
--
作者：
Jin, Xuesong;Wu, Lei;Ling, Liang
本文通过现场广泛的试验，对地铁列车车轮的多边形磨损机理进行了详细的研究。试验研究的目的是确定引起地铁列车车轮多边形磨损的共振频率起源于哪里。试验内容包括车辆模型试验、车辆零部件模型试验、车辆运行动态特性试验和车轮多边形磨损发展观测试验。测试的轨道包括高架桥和隧道轨道。结构模型试验表明，多边形车轮的平均通过频率与轮对模型试验得到的、并经轮对有限元分析验证的轮对第一阶弯曲共振频率相近。车辆在运行中的动态特性试验表明，轴箱垂直加速度振动的主频率在轴箱的垂直加速度振动中占主导地位，接近多边形车轮的通过频率，这表明轮对在轮对运行中的第一弯曲共振频率是非常激励的。对砂轮多边形磨损发展的观察试验表明，重新仿形后，砂轮的多边形磨损率有所增加。文中还介绍了地铁车辆与有碴轨道和板式轨道耦合的动力学模型，以分析车轮的多边形磨损对轮轨法向力的影响。
This paper presents a detailed investigation conducted into the mechanism of the polygonal wear of metro train wheels through extensive experiments conducted at the sites. The purpose of the experimental investigation is to determine from where the resonant frequency that causes the polygonal wear of the metro train wheels originates. The experiments include the model tests of a vehicle and its parts and the tracks, the dynamic behaviour test of the vehicle in operation and the observation test of the polygonal wear development of the wheels. The tracks tested include the viaducts and the tunnel tracks. The structure model tests show that the average passing frequency of a polygonal wheel is approximately close to the first bending resonant frequency of the wheelset that is found by the wheelset model test and verified by the finite element analysis of the wheelset. Also, the dynamic behaviour test of the vehicle in operation indicates the main frequencies of the vertical acceleration vibration of the axle boxes, which are dominant in the vertical acceleration vibration of the axle boxes and close to the passing frequency of a polygonal wheel, which shows that the first bending resonant frequency of the wheelset is very exciting in the wheelset operation. The observation test of the polygonal wear development of the wheels indicates an increase in the rate of the polygonal wear of the wheels after their re-profiling. This paper also describes the dynamic models used for the metro vehicle coupled with the ballasted track and the slab track to analyse the effect of the polygonal wear of the wheels on the wheel/rail normal forces.