Coupling Effects of Yaw Damper and Wheel-Rail Contact on Ride Quality of Railway Vehicle
Coupling Effects of Yaw Damper and Wheel-Rail Contact on Ride Quality of Railway Vehicle
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偏航阻尼器与轮轨接触耦合对轨道车辆乘坐质量的影响
DOI：
10.1155/2021/6692451
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发表时间：
2021-04
影响因子：
1.6
通讯作者：
姜琦
中科院分区：
文献类型：
--
作者：
张海;冉祥瑞;王秀刚;林凤涛;姜琦
轨道车辆的行驶质量不仅受到轮轨接触几何形状的影响，而且还受到偏航阻尼器的影响。为了探索这种变化规律，根据偏航阻尼器的内部特性，建立了准确、高效的偏航阻尼器等效参数模型。然后考虑车轮磨损和轮轨接触几何形状的影响，分析了不同偏航阻尼器参数和轮轨接触参数下轨道车辆的乘坐质量。结果表明，车轮磨损后，轮轨接触点在轮廓上分散，且当量锥度也随着运行里程的增加而呈增大趋势。乘坐品质空间的分布对等效锥度的变化敏感。在低当量锥度区域，优良乘坐品质空间的扩展速度更快。在高当量锥度区域，合格乘坐品质空间的扩展速度较快。偏航减振器等效参数模型中适当的附加刚度，即与结构阻尼并联的油刚度，可以改善车辆的平顺性。偏航阻尼器阻尼小于440 kN·s·m−1时，对横向行驶品质影响明显。适当降低偏航减振器的关节刚度，可以减少偏航减振器的特性参数和轮轨接触等效锥度对车辆横向行驶质量的影响。优化后的偏航减振器特性参数应用于实车试验，有效提高了乘坐质量。
The ride quality of the railway vehicle is not only affected by the wheel-rail contact geometry but also by the yaw damper. In order to explore this variation law, an equivalent parameter model of the yaw damper was established based on the internal characteristics of the yaw damper, which is both accurate and efficient. Then, considering the influence of wheel wear and wheel-rail contact geometry, ride quality of the railway vehicle under different parameters of yaw damper and wheel-rail contact parameters was analysed. The results show that the wheel-rail contact points are scattered on the wheel profile after the wheel wears out, and the equivalent conicity also tends to increase with the increasing operating mileage. The distribution of ride quality space is sensitive to the change of equivalent conicity. In the low equivalent conicity area, the expansion rate of excellent ride quality space is faster. In the high equivalent conicity area, the expansion rate of qualified ride quality space is faster. Appropriate additional stiffness which is oil stiffness in parallel with structural damping in the equivalent parameter model of the yaw damper can improve the vehicle ride quality. The lateral ride quality is influenced obviously with the condition of the damping of the yaw damper being less than 440 kN·s·m−1. Properly reducing the joint stiffness of the yaw damper could reduce the influence of characteristic parameters of the yaw damper and equivalent conicity of the wheel-rail contact on vehicle lateral ride quality. The optimized characteristic parameters of the yaw damper are used in the actual vehicle test, and the ride quality is effectively improved.
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