考虑车辆振动的高速列车制动系统动态响应  

Dynamic Response of High-Speed Train Braking Systems Considering Vehicle Vibration

作　　者：张亮 王志伟 王权 莫继良[1,2] 冯鉴 王俊勇 ZHANG Liang;WANG Zhiwei;WANG Quan;MO Jiliang;FENG Jian;WANG Junyong(School of Mechanical Engineering,Southwest Jiaotong University Chengdu,610031,China;Technology and Equipment of Rail Transit Operation and Maintenance Key Laboratory of Sichuan Province Chengdu,610031,China)

机构地区：[1]西南交通大学机械工程学院,成都610031 [2]轨道交通运维技术与装备四川省重点实验室,成都610031

出　　处：《振动．测试与诊断》2023年第4期800-808,835,836,共11页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51822508);四川省科技计划资助项目(2020JDTD0012);中央高校基本科研业务专项基金资助项目(2682021CX025)。

摘　　要：为了研究车辆振动对高速列车制动系统温度和振动特性的影响,首先,建立了高速列车整车动力学模型,通过线路试验验证了该模型的有效性;其次,建立了盘-块制动系统热机耦合有限元模型,通过对比仿真与试验摩擦块界面温度分布,验证了该模型的正确性;最后,基于车辆动力学模型获得的振动环境,研究了简谐激励和轨道不平顺激励作用下制动系统的温度和振动特性。结果表明:与忽略车辆振动相比,当简谐激励频率为转频20倍时,制动系统的振动加速度均方根值增加了304%;当考虑轨道不平顺激励时,制动系统的振动加速度均方根值增加了24%;外部激励会引起系统复杂的局部接触行为,导致摩擦块界面温度最大值和温度场分布与无外部激励相比存在一定的差异。因此,在分析评估高速列车制动系统温度和振动特性时,特别是在长大坡道制动条件下,需要考虑车辆振动环境的影响。In order to study the influence of vehicle vibration on the temperature and vibration characteristics of the braking system of high-speed trains,a model of the whole vehicle dynamics of high-speed trains was established and verified by field experimental tests.Then a thermal-mechanical coupling finite element model of the disc-block braking system is developed,and it is verified by comparing the temperature distribution of the interface of the simulated and tested friction blocks.Finally,based on the vibration environment obtained from the vehicle dynamics model,the temperature and vibration characteristics of the braking system under the effect of simple harmonic excitation and track irregularity excitation are systematically investigated.The results show that the root mean square value of the vibration acceleration of the braking system increases by 304%and 24%,respectively,with the effects of harmonic excitation frequency was 20 times the rotational frequency and track irregularity compared to the results without external excitations.Besides,the external excitation causes a complex local contact behavior of the system,resulting in a difference in the temperature maximum at the friction block interface and in the temperature field distribution compared to the case without external excitation.Therefore,it is necessary to consider the influence of the vehicle vibration environment when analyzing and evaluating the temperature and vibration characteristics of high-speed train braking systems,especially under continuous long ramp braking conditions.

关 键 词：高速列车 制动系统 动力学 热机耦合 轨道不平顺 

分 类 号：TH117.1[机械工程—机械设计及理论] U271.91[机械工程—车辆工程]