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考虑轨道弹性,利用刚柔耦合理论和有限元的方法建立了车辆-轨道耦合动力学模型;采用SIMPACK软件进行仿真计算,分析道床、轨枕、扣件、钢轨等轨道结构和轨道总成的动力响应。利用该模型研究扣件刚度对中大运量直线电机车辆振动的影响。通过仿真分析在车辆以60 km/h速度在线上运行时,模型中各个部分的振动能量随扣件垂向刚度和横向刚度的变化规律,找到车辆在60 km/h速度下对应的最优的扣件垂向刚度值为7.5×107N/m,最优横向刚度区间为2×102~3×107N/m。
Considering the orbital elasticity, a vehicle-track coupling dynamic model was established by using the rigid-flexible coupling theory and the finite element method. SIMPACK software was used to simulate and analyze the dynamic response of track bed, sleeper, fastener, rail and other track structures and track assemblies . The model is used to study the influence of fastener stiffness on the vibration of vehicles with large capacity and linear motor. Through the simulation analysis, when the vehicle is running on-line at the speed of 60 km / h, the vibration energy of each part in the model varies with the vertical stiffness and lateral stiffness of the buckle, and the optimal The buckle vertical stiffness value of 7.5 × 107N / m, the optimal transverse stiffness range of 2 × 102 ~ 3 × 107N / m.