Using an inerter-based suspension to improve both passenger comfort and track wear in railway vehicles
Using an inerter-based suspension to improve both passenger comfort and track wear in railway vehicles
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DOI：
10.1080/00423114.2019.1589535
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发表时间：
2020-03-03
影响因子：
3.6
通讯作者：
Iwnicki, S. D.
中科院分区：
文献类型：
--
作者：
Lewis, T. D.;Jiang, J. Z.;Iwnicki, S. D.
在铁路行业中，越来越希望在不以其他方式降低性能（例如，恶化乘客舒适度）的情况下提高车轮和轨道的寿命。减少履带和车轮磨损的一种方法是降低主偏航刚度，从而显著降低与维护和紧急维修相关的成本，但导致乘客舒适性和高速稳定性降低。本文通过对一个两轴铁路车辆的案例研究，展示了使用被动式惯性悬架同时改善乘坐舒适性和减少轨道磨损的潜力。工业参数用于量化曲线条件下接触区的摩擦能量损失，横向RMS车体加速度用于量化直线行驶条件下的乘客舒适度，横向轨道干扰取自真实的轨道数据。优化结果得出结论，与一级横向悬架中的默认弹簧-阻尼器配置相比，在默认横摆刚度值的情况下，采用有益的基于惯性器的配置可以将乘客舒适度提高高达43%。如果横摆刚度降低，从而改善了履带磨损，则基于横向惯性器的悬架仍然可以实现乘客舒适性的类似改善;例如，横摆刚度降低50%，仍然可以实现33%的改善。此外，当基于惯性的横向悬架与霍尔-布什纵向悬架一起使用时，乘客舒适度上升到40%，与非惯性横向加霍尔-布什纵向设置相比，这涉及到25%的改善。
There is an increasing desire in the railway industry to improve the longevity of wheels and rails without reducing performance in other ways (e.g. worsening passenger comfort). One way of reducing track and wheel wear is to reduce the primary yaw stiffness, significantly diminishing the costs associated with maintenance and emergency repairs, resulting however in reduced passenger comfort and high-speed stability. This paper, using a two-axle railway vehicle case study, demonstrates the potential of using passive, inerter-based suspensions to concurrently improve ride comfort and reduce track wear. The industrial parameter is used to quantify the frictional energy lost at the contact patch under curving conditions, and the lateral RMS carbody acceleration is used to quantify passenger comfort under straight running conditions, with lateral track disturbances taken from real track data. Optimisation results conclude that, with the default yaw stiffness value, compared with the default spring-damper configuration in the primary lateral suspension, employing beneficial inerter-based configurations can improve passenger comfort by up to 43%. If the yaw stiffness is reduced such that the track wear is improved, similar improvements in passenger comfort can still be achieved with lateral inerter-based suspensions; for example, an improvement of 33% can still be achieved with a 50% reduction in yaw stiffness. Furthermore, when an inerter-based lateral suspension is used together with a Hall-Bush longitudinal suspension, the passenger comfort rises to 40%, which relates to a 25% improvement when compared with a non-inerter lateral plus Hall-Bush longitudinal setup.