高速客车对轨道的垂向动力作用研究

本文从系统工程的观点出发,将车辆与轨道二个子系统作为一个总体系统来考虑,建立了车辆-轨道耦合系统的垂向动力学模型及其详细的键图模型。应用这一模型研究了高速客车对轨道的垂向动力作用问题。结果表明:当轨道存在垂向不平顺时,高速列车对轨道将产生剧烈的动力作用;为降低这种作用,必须要使车辆与轨道参数合理匹配,并对轨道维护质量提出较高要求。

On the Vertical Dynamic Interaction between Track and High Speed Passenger Coaches

From the point of view of systems engineering, a general sys- tem consisting of vehicle and track subsystems is established in this paper. A vehicle-track coupling dynamic model and the associated bond graphs are developed to predict the dynamic interactive forces between track and high speed passenger coaches. The results show that severe vertical forces will exert on the track when high speed train passes through the track irregula- rities. In order to reduce these forces, parameters of the vehicle and the track should be matched and optimized, and higher requirements for track maintenance should be assigned.