噪声与振动控制2016，Vol.36Issue(4)：113-119,7.DOI:10.3969/j.issn.1006-1335.2016.04.024
车辆-轨道非线性耦合系统交叉迭代算法及应用
Cross-iterative Algorithm and Its Application to the Analysis of Vehicle-track Nonlinear Coupling Systems
摘要
Abstract
A model for dynamic analysis of a vehicle-track nonlinear coupling system is established by finite element method. The system is divided into two subsystems, i.e. the vehicle subsystem considered as the secondary spring vehicle model and the track subsystem regarded as the model of three discrete elastic beams. Coupling of the two systems is achieved by equilibrium conditions of wheel-rail nonlinear contact forces and geometrical compatibility conditions. A cross-iterative algorithm is presented to solve the dynamics equations of the vehicles-track nonlinear coupling system. In order to accelerate the iterative convergence rate, the relaxation technique is employed to correct the wheel-rail contact force. Comparing with the example in a reference, the correctness of the algorithm is verified. Examples of the vehicle and track vibration induced by the high-speed CRH3 train traveling on ballasted track are given, in which the influences of linear and nonlinear contact and different train speed on the vibration of vehicles and track structure are considered. The results demonstrate that the cross-iterative algorithm has the advantages of simple programming, fast convergence rate, less computation time and high accuracy. The dynamic response obtained by the wheel-rail linear contact model is larger than that by the wheel-rail nonlinear contact model. The increases of the maximum displacement, the maximum acceleration, the displacement amplitude and the maximum acceleration are all within 15 %. The increases of the maximum wheel-rail contact force and the wheel-rail contact force amplitude are all within 5%.关键词
振动与波/车辆-轨道非线性耦合/交叉迭代算法/轮轨非线性接触/轮轨线性接触/松弛法Key words
vibration and wave/vehicle-track nonlinear coupling/cross-iterative algorithm/wheel-rail nonlinear contact/wheel-rail linear contact/relaxation technique分类
交通工程引用本文复制引用
雷晓燕,吴神花,张斌..车辆-轨道非线性耦合系统交叉迭代算法及应用[J].噪声与振动控制,2016,36(4):113-119,7.基金项目
国家自然科学基金资助项目(51478184) （51478184）
