高速列车耦合大系统动力学研究

Study on dynamics of coupled systems in high-speed trains

根据高速铁路结构和技术特点,把高速列车以及与之相关并影响其动力学性能的线路、气流、供电和接触网等耦合系统作为一个统一的大系统,通过建立高速列车、线路、弓网及供电等子系统动力学模型,以及轮轨、弓网、流固和机电等耦合关系模型,形成高速列车耦合大系统动力学模型。针对高速列车运行模拟要求,给出基于循环变量方法的列车动力学建模及计算方法、基于滑移模型的车线耦合计算方法、基于松弛因子的流固耦合计算方法,实现高速列车耦合大系统动力学仿真。

According to the structure and technical features of high-speed railway, the high- speed train, rail line, air flow, power supply and catenary which are relevant to the high-speed train and have an effect on the dynamic behavior of the high-speed train are coupled as a unified system. The dynamic model of coupled systems in high-speed trains are created by establishing the dynamic models of high-speed train, rail line, pantograph-catenary and power supply and the coupled interaction models of wheel-rail, pantograph-catenary, liquid-solid and electro-mechanical. For the high speed train operation simulation requirements, this paper studied the train dynamics modeling and calculation method based on cyclic variable parameters method, the train-line coupled calculation method based on the slip model and the liquid-solid coupled calculation method based on the relaxation factor, the simulation of coupled systems in high- speed trains are realized.