摘要
随着重载机车载货重量的增加和运行速度的提高,车轮磨耗越来越严重,加剧了车轮多边形的形成。以某型六轴重载宽轨货运机车为研究对象,以ГОСТ标准为主要参考,将轮对柔性化处理,采用多体动力学软件建立刚柔耦合模型,基于谐波函数描述车轮不圆顺,分析多边形车轮的阶数和不圆度幅值对不同车速下机车车辆动力学性能的影响。研究结果表明,多边形车轮会使车辆临界车速降低;在120km/h设计速度范围内,车轮多边形对机车运行平稳性影响很小,对机车运行安全性和车辆动态特性的影响与车辆系统的模态特性密切相关。
With the increase of the load and running speed of heavy freight locomotives,the wheel wear becomes more and more serious,which can exacerbate the polygon formation of wheels.The influence of polygonal wheels on the dynamic performance of a wide⁃gauge six⁃axle heavy freight locomotive is examined,taking theГОСТstandard as the main reference.The finite element model of the wheelset is established,and then a rigid⁃flexible coupling model is established by using the multi⁃body dynamics software.The polygonal wheel is described by the harmonic function.Effects of the parameters,unrounded amplitudes and polygon numbers are analyzed.The results show that the critical speed decreases because of the effect of the polygonal wheel.Within the design speed range of 120 km/h,the wheel polygon has little influence on the running comfort;the influence on the locomotive safety and the vehicle dynamic characteristics is closely related to the modal characteristics of the vehicle.
作者
孙小娟
孙洪亮
李幸人
王宇
SUN XiaoJuan;SUN HongLiang;LI XingRen;WANG Yu(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Technology Center of CRRC Datong Electric Locomotive Co.,Ltd.,Datong 037038,China)
出处
《机械强度》
CAS
CSCD
北大核心
2023年第3期668-676,共9页
Journal of Mechanical Strength
基金
国家自然科学基金面上项目(52075355)
山西省科技重大专项项目(20181102002)资助。
关键词
六轴重载货运机车
多边形车轮
刚柔耦合
动力学性能
Co-Co
Six⁃axle heavy freight locomotive
Polygonal wheel
Rigid⁃flexible coupling
Dynamic performance
Co⁃Co
