Yaw damper modelling and its influence on railway dynamic stability
Yaw damper modelling and its influence on railway dynamic stability
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DOI：
10.1080/00423114.2010.515031
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发表时间：
2011-01-01
影响因子：
3.6
通讯作者：
Gomez, E.
中科院分区：
文献类型：
--
作者：
Alonso, A.;Gimenez, J. G.;Gomez, E.
本文论述了偏航阻尼器的建模，并确定了该部件建模对预测车辆动态稳定性时所得结果的影响。研究工作的第一部分分析了偏航阻尼器特性对铁路动态稳定性的影响。在此之后，开发了一种阻尼器的物理模型，该模型能够在设想的阻尼器运行的整个工况范围内精确再现其性能。模型得出后，发现其计算成本相对较高。因此，又开发了一种简化模型。简化模型能够在不过度增加模拟所需时间的情况下获得准确结果。对用该模型得到的结果进行分析后得出结论：与基于常规方法的先前模型相比，它提高了稳定性评估的动态计算精度。还发现，在处理车辆动态性能时，偏航阻尼器的精确建模至关重要。在论文的最后一部分，研究了一种特殊类型的偏航阻尼器及其对车辆动态行为的影响。
This paper deals with the modelling of yaw dampers and determining the influence of the modelling of this component on the results obtained when predicting the dynamic stability of a vehicle. The first part of the work analyses the influence of the yaw damper characteristics on railway dynamic stability. Following this, a physical model of the damper is developed which allows its performance to be reproduced accurately in the whole range of operating conditions the damper is envisaged to operate in. Once obtained, it was found that the computational cost of the model was relatively high. Therefore, a simplified model has been developed. The simplified model allows obtaining accurate results without excessively increasing the time required to perform the simulations. Analysing the results obtained with this model, it has been concluded that with respect to previous model based on conventional approaches, it improves the accuracy of dynamic calculation for the stability assessment. Also, it has been found that the accurate modelling of the yaw damper is critical when dealing with the vehicle's dynamic performance. In the last part of the paper, a special type of yaw damper was studied as well as its effect on the dynamic behaviour of the vehicle.