齿轨车辆-轨道(齿轨)系统耦合动力学模型及其基本振动特性
Coupled dynamic model of rack vehicle-track(rack)system and basic vibration characteristics
陈兆玮 1李世辉 1袁密奥 1王浪 1李长林 1杨吉忠 2陈志辉 2杨武3
作者信息
- 1. 重庆交通大学机电与车辆工程学院,重庆 400074
- 2. 中铁二院工程集团有限责任公司,成都 610031
- 3. 重庆艾博瑞威轨道交通设备有限公司,重庆 402365
- 折叠
摘要
为研究齿轨车辆-轨道(齿轨)系统动态特性,基于车辆-轨道耦合动力学理论和齿轮动力学原理建立了考虑齿轮-齿轨非线性啮合行为和轮轨非线性接触特性的齿轨车辆-轨道(齿轨)系统空间耦合动力学模型,并开展工程线路动力学试验验证了本模型的有效性.在此基础上,研究了齿轨车辆-轨道(齿轨)系统的基本振动特性以及轨道随机不平顺对齿轮-齿轨系统动态啮合行为的影响机制.研究结果表明,本文建立的齿轨车辆-轨道(齿轨)系统动力学模型具有良好的准确性和可靠性;轨道随机不平顺对齿轨车辆振动有较大影响,齿轮-齿轨系统垂向和纵向振动受不平顺激励影响较小,而横向振动则受到明显影响;齿轮-齿轨系统对轨道高低和水平不平顺敏感程度较低,而方向和轨距不平顺则明显使齿轮-齿轨系统啮合不稳定,因此建议通过减小轨道横向不平顺来提高齿轮-齿轨系统稳定性,以保证齿轨车辆的安全平稳运行.
Abstract
To study the dynamic characteristics of the rack vehicle-track(rack)system,based on the vehicle-track coupled dynamics theory and gear dynamics principle,a spatially coupled dynamic model of the rack vehicle-track(rack)system considering the nonlinear meshing behavior of the gear-rack and nonlinear contact characteristics of the wheel-rail is established.The effectiveness of the model is verified by the engineering line dynamics test.The basic vibration characteristics of the rack vehicle-track(rack)system and the influence mechanism of track random irregularity on the dynamic meshing behavior of the gear-rack system are investigated on this premise.The results demonstrate that the dynamic model of the rack vehicle-track(rack)system established in this paper has good accuracy and reliability.The random irregularity excitation has little effect on the vertical and longitudinal vibrations of the gear-rack system,but it has a substantial effect on the lateral vibration.The gear-rack system is less sensitive to vertical and roll irregularities,while the irregularities of the lateral and gauge make the gear-rack system unstable.Therefore,it is advised to increase the stability of the gear-rack system by reducing the transverse irregularity of the track to ensure the safe and stable operation of the rack vehicle.
关键词
齿轨铁路/车辆动力学/轮轨动态接触/齿轮动力学/轨道不平顺/齿轮-齿轨系统稳定性Key words
rack railway/vehicle dynamics/wheel-rail dynamic contact/gear dynamics/track irregularity/gear-rack system stability引用本文复制引用
基金项目
国家自然科学基金项目(52008067)
四川省科技计划项目(2021YFG0211)
重庆市建设科技计划项目(CS2020-4-6)
出版年
2024
NETL
NSTL
万方数据