车轮不圆状态下铁路货车的动力学行为研究  

Study of Railway Wagon Dynamics Characterization with Wheel Non-Roundness

作　　者：彭莘宇 曾京[1] 汪群生[1] 牟健 PENG Xin-yu;ZENG Jin;WANG Qun-sheng;MOU Jian(State Key Laboratory of Traction Power,Southwest Jiaotong University,Sichuan Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械设计与制造》2022年第8期185-188,共4页Machinery Design & Manufacture

基　　金：国家重点研发计划—公铁便捷联运铁路货运车辆动力学性能研究(2017YB131201303-09)。

摘　　要：通过建立配置有转K6转向架的C80铁路货车动力学模型,考虑不同的车轮不圆状态,包括车轮不圆的阶数和车轮不圆的幅值,研究车轮不圆状态下的车轮轮轨力响应、轴箱振动响应情况,分析车辆动力学行为演变规律,阐述了车轮不圆下的动力学表征,为车轮不圆的故障检测和识别提供基础支撑。结果表明,车轮不圆顺会影响同一轮对的另一车轮振动情况,对第二轮对有轻微影响,基本不会对第三和第四轮对产生影响;多边形阶次与轮轨力主频基本呈现一次线性关系,且不圆深度对车轮轮轨力的幅值有较为明显影响。By establishing dynamics model of theC80 railway vehicle with K6 bogie,the wheel/rail contact force and the axlebox vibration performance was analyzed under different wheel polygonization,including the polygon order and the wheel polygonization depth.The dynamics performance under the wheel polygonization is described,which provides the basic support for the fault detection and identification of wheel non-roundness state.The results showed that the wheel polygonization affect the wheel/rail contact force on the other side of the wheelset obviously and has little influence on other wheelsets.What’s more,the polygon order is linear with the main frequency of the wheel/rail contact force,and the polygonization depth has obvious influence on the amplitude of wheel/rail force.

关 键 词：转K6 铁路货车 车轮不圆 动力学行为 

分 类 号：TH16[机械工程—机械制造及自动化] U272[机械工程—车辆工程]