100%低地板轻轨车辆动力学性能及悬挂系统故障分析

Dynamic Performance and Suspension System Fault Analysis of 100% Low Floor Light Rail Vehicles

利用特定设计的独立车轮踏面和50 kg钢轨匹配的轮轨关系,基于SIMPACK软件建立了100%低地板轻轨车的多体动力学模型,采用优化后的悬挂参数,分析了空重车工况下车辆的动力学性能,同时考虑了五种悬挂系统故障工况对轻轨车辆运行平稳性和安全性的影响.结果表明,此种100%低地板车在通过小半径曲线时需将速度降至10 km/h以下,悬挂系统故障会不同程度影响低地板车的动力学性能,尤其二系垂向悬挂系统故障对的垂向平稳性指标和横向平稳性指标均有较大影响,对运行安全性指标也有较大影响.

A multi-body dynamic model of a 100%low-floor light rail vehicle is established based on SIMPACK software by using the wheel-rail relationship of specific design of the independent wheel tread and 50 kg rails.The optimized suspension parameters are used to analyze the dynamic performance of the 100%lowfloor light rail vehicle under the working conditions of empty and heavy weight,and the stability and safety of the light rail vehicle are analyzed considering the influence of five suspension system failure conditions.The results show that this 100%low-floor vehicles need to reduce speed below 10 km/h when passing through small radius curves;the failure of the suspension system will affect the dynamic performance of the low-floor vehicle to varying degrees,and especially the failure of the second vertical suspension system has a large impact on the vertical stability index,lateral stability index and the operating safety index.