考虑磨耗及不等厚辐板的轨道车轮振动声辐射特性  

Characteristics of Vibration and Sound Radiation for Railway Wheels Considering Wear and Unequal Thickness Web Plate

作　　者：刘跃杰 文永蓬[1,2,3] 周月 吴俊汉 LIU Yuejie;WEN Yongpeng;ZHOU Yue;WU Junhan(School of Urban Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China;Shanghai Engineering Research Centre for Vibration and Noise Control Technologies in Railway Transportation,Shanghai University of Engineering Science,Shanghai 201620,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620 [2]上海工程技术大学上海市轨道交通振动与噪声控制技术工程研究中心,上海201620 [3]西南交通大学轨道交通运载系统全国重点实验室,成都610031

出　　处：《机械科学与技术》2023年第9期1508-1515,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(11472176);上海市自然科学基金项目(15ZR1419200);上海市轨道交通结构耐久与系统安全重点实验室开放基金项目(R202204);西南交通大学轨道交通运载系统全国重点实验室开放课题(TPL2103)。

摘　　要：为了降低轨道车轮振动的声辐射,以双S型辐板车轮为研究对象,建立了反映磨耗及不等厚辐板的9种城市轨道车轮三维有限元模型,分别获得了车轮在各阶振动模态下的固有频率及结构振型,对比分析了不同车轮的声功率级响应曲线,从而得到车轮在不同磨耗条件及不等厚特征情况下的声辐射水平。研究结果表明:与初始现役车轮相比,辐板上部不等厚车轮在峰值声功率级上降低了13.82 dBA;随着踏面磨耗加深,车轮的噪声逐渐增大;辐板上部不等厚车轮在不同磨耗下的最大声功率级均小于初始现役车轮。To reduce the sound radiation of rail wheel vibration,taking the dual S-type web wheels as the research object,9 types 3D finite element models of urban rail wheels reflecting the wear and unequal thickness of the spokes have been established.Based on the finite element model,the natural frequencies and structural modes of the wheel in each vibration mode were obtained,and the sound power level response curves of different wheels were compared and analyzed to obtain sound radiation level of the wheels under different wear conditions and unequal thickness characteristics.The research results show that:compared with the initial active wheels,the peak sound power level of the wheels with unequal thickness on the upper part of the spoke plate is reduced by 13.82 dBA;as the tread wear deepens,the noise of the wheels increases gradually;the maximum sound power level of wheels with unequal thickness on the upper part of the spoke plate under different wear is less than that of the initial active wheels.

关 键 词：轮轨噪声 城市轨道车轮 声辐射 磨耗 不等厚辐板 

分 类 号：U270.2[机械工程—车辆工程]