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摘要：随着我国高速铁路交通近年来的飞速发展，动车已成为人们长途出行的必要选择。高速动车组列车运行速度的不断提高，对高速动车组的行车安全性和乘坐舒适性提出了更加苛刻的要求。本论文主要讲述了转向架的发展现状，并通过多体动力学软件SIMPACK对CRH2型动车组车辆进行建模，研究了车轮的轮径参数以及转向架的悬挂参数对车辆动力学性能的影响。
经过对仿真数据的研究可得：车轮直径从820mm增长到960mm时，车辆的临界速度逐渐增大，车辆的横向平稳性逐渐变小，车辆的垂向平稳性指标变化不大；与此同时车辆的脱轨系数和轮轨横向力均增大。当车轮直径在860mm左右，车辆的动力学性能较好，而如果要保证车辆的正常运行，那么前轮对轮径差（半径）要小于3mm。通过SIMPACK软件的仿真研究，发现当只有一个参数发生改变时，一系纵向定位刚度在14MN/m左右，一系横向定位刚度在6MN/m左右，空气弹簧水平刚度在0.2MN/m左右，空气弹簧垂向刚度在0.19MN/m左右，车辆的动力学性能较为合理。63463
毕业论文关键词： 转向架建模；SIMPACK；轮径参数；悬挂参数
Analysis of influence of bogie parameters on train dynamic performance
Abstract: With the rapid development of China's railway in recent years, high-speed EMU has become the first choice for people to travel. With the continuous improvement of the high-speed train running speed, the traffic safety and riding comfort of high-speed train are more stringent. This paper describes the development status of the steering rack, and the multi-body dynamics software SIMPACK of CRH2 type EMU body modeling of different wheel diameter parameters and suspension parameters of bogie on vehicle dynamic performance.
After the study of simulation data can be obtained from the 820mm how to wheel diameter 960mm, the critical speed of the vehicle increases, the lateral stability of the vehicle becomes smaller, the vertical ride index changed little; the derailment coefficient and wheel rail lateral force of the vehicle at the same time were increased. When the diameter of the vehicle is about 860mm, the dynamic performance of the vehicle reaches the best, and to ensure the normal operation of the vehicle, the wheel diameter difference (radius) of the front wheel is less than 3mm. Through the simulation of SIMPACK software, a longitudinal positioning stiffness 14MN/m, a lateral stiffness of air spring stiffness level of 6MN/m, 0.2MN/m, air spring vertical stiffness is 0.19MN/m, the best performance of vehicle dynamics.
Key Words: Bogie modeling；SIMPACK； Wheel diameter； Suspension parameters
目录
1绪论 1
1.1 课题选题背景及研究的意义 1
1.3 车辆动力学性能的评定指标 3
1.3.1 车辆稳定性指标的评定 3
1.3.2 车辆运行平稳性指标的评定 3
1.3.3 车辆曲线通过性能的评定 4
1.4 本文主要内容 5
2 建立车辆动力学模型 6
2.1 多体动力学软件SIMPACK的发展 6
2.2 建模的基本方法和假设 6
2.3 车辆模型的自由度 7
2.4 车辆模型的拓扑图 7
2.5 CRH2型动车组的建模过程 8
2.5.1 模型参数
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