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基于列车-轨道系统空间振动分析理论,考虑横风作用,建立横风-列车-轨道系统空间振动分析模型。根据弹性系统动力学总势能不变值原理及形成系统矩阵的“对号入座”法则,建立此系统空间振动矩阵方程,并编制相应的计算机程序求解该方程。计算横风作用下的列车-轨道系统空间振动响应,研究不同类型铁路车辆振动响应及倾覆稳定性的差异,分析横风对此系统振动响应的影响规律。研究结果表明:罐车的稳定性最好,敞车次之,棚车最差;横风对车体横向位移、轮重减载率和倾覆系数有很大影响,对车体横向加速度、脱轨系数及横向平稳性指标影响不大。
Based on the theory of space vibration analysis of train-track system, considering the effect of cross-wind, a space vibration analysis model of cross-wind-train-track system is established. According to the principle of invariable value of total potential energy of elastic system dynamics and the principle of “condemnation” which forms the system matrix, this equation of space vibration matrix is established and the corresponding computer program is compiled to solve the equation. The space vibration response of train-track system under cross-wind was calculated. The difference of vibration response and overturning stability of different types of railway vehicles was studied. The influence of cross-wind on the system vibration response was analyzed. The results show that the tanker has the best stability, the second is the open car, the worst is the box car. The transverse wind has a great influence on the lateral displacement, the wheel load deload ratio and the overturning coefficient. The transverse acceleration, derailment coefficient and lateral Stationary index has little effect.