Track–vehicle severe interaction on track with small curve radius results in rail wear and corrugation, and wheel polygonization, which drain considerable resources for rail grinding and wheels re-profiling in metro lines. To reduce the damage caused by track-vehicle severe interaction, the paper analyzes the reasons leading to rail wear and then proposes an architecture of a metro vehicle with independently rotating wheels driven directly by permanent magnet synchronous motors. The architecture is axle guidance, offered by passive linkages, which ensures that all axles are oriented radially, while control strategy was kept as simple as possible, identifying only two basic traction conditions. The concept is first discussed and then validated through a comprehensive set of running dynamics simulation performed with a multibody software to evaluate rail wear and rolling contact fatigue in traction/braking, coasting with different cant deficiency/excess conditions. The multibody dynamics simulation shows that the proposed architecture is virtually capable of avoiding both wear and rolling contact fatigue damages, and achieves the highest possible track friendliness. The concept of the proposed architecture is a track-fiendly metro architecture and could be a good reference for reducing rail-track interaction damages and maintainace cost.

小曲线半径轨道上的轨道车辆严重相互作用导致轨道磨损和波纹以及车轮多边形化，这会消耗大量资源用于地铁线路中的轨道磨削和车轮重新成型。为减少轨道车辆严重相互作用造成的损坏，本文分析了导致轨道磨损的原因，然后提出了一种由永磁同步电机直接驱动的独立旋转车轮的地铁车辆架构。该架构是轴引导，由被动连杆提供，确保所有轴径向定向，同时控制策略尽可能简单，仅识别两个基本牵引条件。首先讨论该概念，然后通过使用多体软件执行的一组综合运行动力学模拟进行验证，以评估牵引/制动中的轨道磨损和滚动接触疲劳，以及在不同斜面不足/过度条件下滑行。多体动力学仿真表明，所提出的架构实际上能够避免磨损和滚动接触疲劳损伤，并实现尽可能高的轨道友好性。所提出的架构的概念是一种适合铁轨的地铁架构，可以作为减少铁轨相互作用损坏和维护成本的良好参考。多体动力学仿真表明，所提出的架构实际上能够避免磨损和滚动接触疲劳损伤，并实现尽可能高的轨道友好性。所提出的架构的概念是一种适合铁轨的地铁架构，可以作为减少铁轨相互作用损坏和维护成本的良好参考。多体动力学仿真表明，所提出的架构实际上能够避免磨损和滚动接触疲劳损伤，并实现尽可能高的轨道友好性。所提出的架构的概念是一种适合铁轨的地铁架构，可以作为减少铁轨相互作用损坏和维护成本的良好参考。