考虑齿轮齿条动态激励的山地齿轨车辆-轨道耦合动力学特性分析

doi:10.3901/JME.2023.08.163

机械工程学报 ›› 2023, Vol. 59 ›› Issue (8): 163-173.doi: 10.3901/JME.2023.08.163

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考虑齿轮齿条动态激励的山地齿轨车辆-轨道耦合动力学特性分析

陈再刚¹, 唐亮¹, 杨吉忠², 陈志辉², 翟婉明¹

1. 西南交通大学牵引动力国家重点实验室成都 610031;
2. 中铁二院工程集团有限责任公司科研院成都 610031

收稿日期:2022-02-13 修回日期:2022-10-25 出版日期:2023-04-20 发布日期:2023-06-16
通讯作者: 翟婉明,男,1963年出生,博士,教授,博士研究生导师,中国科学院院士,美国工程院(外籍)院士。主要研究方向为铁路车辆-轨道耦合系统动力学。E-mail:wmzhai@swjtu.edu.cn
作者简介:陈再刚,男,1984年出生,博士,研究员,博士研究生导师。主要研究方向为铁路机车车辆系统动力学、机械传动系统动力学。E-mail:zgchen@swjtu.edu.cn
基金资助:
国家自然科学基金(52022083,51735012); 四川省科技计划(2021YFG0065,2021YFG0211)资助项目

Dynamic Characteristic Analysis of Racked Railway Vehicle-track Coupling System with Considering the Dynamic Excitation of Gear-rack Transmission

CHEN Zai-gang¹, TANG Liang¹, YANG Ji-zhong², CHEN Zhi-hui², ZHAI Wan-ming¹

1. Southwest Jiaotong University,State Key Laboratory of Traction Power, Chengdu 610031;
2. China Railway Eryuan Engineering Group Co.Ltd, Scientific Research Institute, Chengdu 610031

Received:2022-02-13 Revised:2022-10-25 Online:2023-04-20 Published:2023-06-16

摘要/Abstract

摘要： 基于车辆-轨道耦合动力学及齿轮传动系统动力学理论,建立完整的考虑齿轮齿条动态啮合激励的齿轨车辆-轨道耦合动力学理论模型。提出了基于势能原理的齿轮齿条啮合刚度计算方法,并与Simpack自带的225号力元以及有限元法计算结果进行对比分析,表明提出的方法具有良好的精度与效率。基于该动力学模型,分析了轨道随机不平顺激扰下齿轮齿条动态啮合力、齿轮角加速度、轮轨垂向力、车体加速度等动态响应特性,探究了齿条基体挠度变形对齿轨动态响应的影响,揭示了线路坡度以及行车速度对齿轨车辆动力学性能的影响规律。研究结果表明,提出的解析法和有限元法均能反映齿条基体挠度变形对齿轨动态响应低频特性的影响;齿轮齿条啮合力、齿轮角加速度等齿轨啮合动态响应随线路坡度和行车速度的增加而增加;轮轨垂向力和横向力均方根值随运行速度的增加而增加;在分析的10~35km/h速度范围内,各轮对脱轨系数均小于0.8(允许限值),车体垂向和横向平稳性指标均小于2.5(优),满足相关标准对行车安全性与平稳性指标的要求。

关键词: 齿轨列车, 齿轮齿条传动, 动力学分析, 时变啮合刚度, 轴重转移

Abstract: Based on the theory of vehicle-track coupled dynamics and gear system dynamics, a complete racked railway vehicle-track coupled dynamics model which considers the dynamic excitation from the gear-rack mesh is established.Especially, the analytical calculation method of the gear-rack mesh stiffness is proposed based on potential energy principle,and the received results are compared with the calculation results from models using the 225 force element in Simpack and the finite element method, respectively. The results show that the proposed method has good accuracy and efficiency. Based on the established model, the dynamic characteristics of the gear-rack mesh force, gear angular acceleration, wheel-rail vertical force and car body acceleration are analyzed. At the same time, influence of the rack flexibility on the dynamic response of the racked railway system is investigated, and the influence law of the slope gradient and vehicle operation speed is also revealed. The results indicate that the finite element method and the proposed analytical method can reflect the influence of the rack flexible deformation on the system dynamic response characteristics at low frequency range. And the dynamic responses such as the gear-rack mesh force and the angular accelerations increase with the growth of slope gradient or the vehicle running speed. Besides, the root mean square of the wheel-rail vertical force and lateral force also increases with the vehicle running speed. It can be also observed that in the speed range of 10-35 km/h analyzed, the derailment coefficient of each wheelset is less than 0.8(allowable limit), and the vertical and lateral sperling indexes of the car body are less than 2.5(excellent), which meet the requirements of relevant standards for driving safety and stability.

Key words: racked railway train, gear-rack transmission, dynamic analysis, time-varying mesh stiffness, axle load transfer

中图分类号:

U234

陈再刚, 唐亮, 杨吉忠, 陈志辉, 翟婉明. 考虑齿轮齿条动态激励的山地齿轨车辆-轨道耦合动力学特性分析[J]. 机械工程学报, 2023, 59(8): 163-173.

CHEN Zai-gang, TANG Liang, YANG Ji-zhong, CHEN Zhi-hui, ZHAI Wan-ming. Dynamic Characteristic Analysis of Racked Railway Vehicle-track Coupling System with Considering the Dynamic Excitation of Gear-rack Transmission[J]. Journal of Mechanical Engineering, 2023, 59(8): 163-173.

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考虑齿轮齿条动态激励的山地齿轨车辆-轨道耦合动力学特性分析

Dynamic Characteristic Analysis of Racked Railway Vehicle-track Coupling System with Considering the Dynamic Excitation of Gear-rack Transmission

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