直线电机轨道交通车线耦合模型的动力响应研究

首先介绍轨道交通的特点，并以广州城市轨道交通4号线所采用的车辆、转向架和直线电机形式为原型建立了车线耦合动力学模型，并在同样的计算条件下，通过与ADAMS中的铁路分析模块ADAMS／Rail进行比较，验证了该模型的正确性。文中以线路设计参数中的缓和曲线和超高为例，分别仿真了横向位移、横向力、脱轨系数、轮重减载率等振动特征量在不同线路设计参数情况下的动力响应。通过分析计算结果，尤其针对幅值及趋势变化，并对照传统计算方法得出的线路设计参数取值，给出了针对广州市直线电机轨道交通4号线的线路设计参数建议值。可以得到按照传统方法计算得出的线路设计参数偏于安全的结论，与采用直线电机轨道交通方式可以更好通过小半径曲线和较大坡度线路相吻合，为我国今后直线电机轨道交通建设在确定合理线路设计参数方面提供理论依据。

Research on Dynamic Response of Coupled Model between Vehicle and Track for LIM Track Transportation

The paper introduces the LIM track transportation features, and sets up the coupled dynamic model between vehicle and track with the vehicle, bogie, and LIM type adopted for the Guangzhou Urban Railway Line No. 4 as the prototypes. Accuracy of the model is verified by comparing the results with ADAMS/Rail the rail analysis model in ADAMS under the same calculation conditions. The paper selects the transition curve and cant as an example to simulate the dynamic Characteristic quantities of the lateral displacement, lateral force, coefficient of derailment,rate of wheel load reduction etc. The paper presents the recommended values of line design parameters for the Guangzhou Urban Railway Line No. 4 by analyzing the calculation results ,especially the amplitude and trend changes, as well as comparing with the line design parameters values derived from the conventional calculation method. We can get the conclusion that the conventional calculation method is more conservative,and-it is consistent with the characteristics of LIM track transportation which can negotiate sharp curves and steep gradients. This establishes the theoretical foundation for reasonable determination of line design parameters for future LIM track transportation building in China.