标题:
基于质心体系稳态振动理论的高速列车蛇形运动研究Study on the Snake-Like Movement of High-Speed Railway Vehicles Based on Steady-State Vibration Theory of the Center of Mass
作者:
申爱国, 申翰林, 赵建
关键字:
蛇形运动, 踏面锥度, 蛇行运动频率Snake-Like Movement; Stamping and Surface Taper; Snake-Like Movement Frequency
期刊名称:
《Open Journal of Transportation Technologies》, Vol.2 No.1, 2013-02-26
摘要:
本文通过分析车体各个自由度与车体质心横向振动之间的关系，建立了车体质心横向振动分析的简化模型，在此基础上，运用稳定平衡体系的振动条件，证明重力和轨面支撑力是导致车体质心在轨面上发生横向振动的根本原因，并由此推导出车体质心横向振动频率与车轮踏面锥度之间的关系，发现当车轮踏面锥度 ≥ 1/40时，车体质心的横向振动是稳定的。在此基础上，讨论了车体在不同横向振动频率和不同行驶速度情况下的蛇形运动波长以及因蛇形运动而作用于轨道上的横向作用力。而有关横向作用力的计算表明，车体对轨道的横向作用力在车体重量的5%~2%之间，而规范给出的数据敲好处于这个范围内。By analyzing the relationship between the various degrees of freedom of the body and the car body mass center transverse vibration, the establishment of a simplified model of the vehicle center of mass lateral vibration analysis, and on this basis, the use of the vibration condition of stable equilibrium system to prove that the support of gravity and track surface power is the root cause of the car center of mass in the lateral vibration of rail surface, and thus derive the relationship between the turnout center of mass transverse vibration frequency of the wheel tread taper, found that when the wheel tread taper ≥ 1/40, vehicle physical the lateral vibration of the heart is stable. Based above and combined with different speed and different lateral vibration frequency, the snake-like movement wavelength of the train vehicle was discussed, as the further step, the lateral force induced by snake-like movement and effected on the orbit was discussed deeply, it is found that the value of the force is in the range of 5% to 20% of the vehicle weight, the given specification (10% of the vehicle weight) is just located in this range.