直线轨道涡流制动对高速列车制动动力学特性的影响

列车制动性能直接影响车辆运行安全性和平稳性、稳定性,本文研究了加装直线轨道涡流制动系统对不同动力分配方式的高速列车制动动力学特性的影响规律.首先建立了6M2T和4M4T两种编组方式的列车动力学仿真模型,并与线路实验数据进行对比,验证了模型的有效性.基于该模型,研究了不同时速下的列车在不同动力分配形式下的动力学特性.针对惰行工况、电空制动工况与加装直线轨道涡流制动系统的联合制动工况,分别研究了第1、5、8节车厢的Sperling 指标、脱轨系数、轮重减载率、轮轨作用力的变化规律,研究结果表明,动力分配方式、制动特性对车辆动力学性能有显著影响,涉及的关键动力学性能指标均满足安全限值标准,研究结果将为高速列车加装直线轨道涡流制动系统提供理论参考.

The Influence of Eddy Current Braking on the Braking Dynamics Characteristics of High-Speed Trains on Straight Track

The braking performance of trains directly affects the safety, stability, and stability of vehicle operation. This article studies the impact of installing a linear track eddy current braking system on the braking dynamics characteristics of high-speed trains with different power distribution methods. Firstly, a train dynamics simulation model was established for two grouping modes, 6M2T and 4M4T, and its effectiveness was verified by comparing it with experimental data on the line. Based on this model, the dynamic characteristics of trains at different speeds under different power distribution forms were studied. The Sperling index, derailment coefficient, wheel load reduction rate, and wheel rail interaction force of the the 1st, 5th, and 8th carriages were studied for the combined braking conditions of coasting, electro-pneumatic braking, and linear track eddy current braking system. The research results showed that the dynamic force distribution method and braking system have a significant impact on the dynamic performance parameters of the vehicle, The key dynamic performance indicators involved all meet the safety limit standards, and the research results provide theoretical reference for installing a linear track eddy current braking system on high speed trains.