• CN：11-2187/TH
• ISSN：0577-6686

• 振动与噪声 •

### 摩擦因数对轮轨曲线啸叫噪声的影响分析

1. 1. 同济大学道路与交通工程教育部重点实验室 上海 201804;
2. 大功率交流传动电力机车系统集成国家重点实验室 株洲 412000
• 收稿日期:2017-04-24 修回日期:2017-12-21 发布日期:2018-02-20
• 通讯作者: 杨新文(通信作者),男,1973年出生,博士,副教授,博士研究生导师。主要研究方向为铁路噪声与振动,轮轨关系,列车与线路系统动力学,铁路轨道结构与养护维修。E-mail:yangxinwen0603@163.com
• 作者简介:王金,女,1993年出生。主要研究方向为轨道结构振动与噪声。E-mail:wangjin0214@126.com
• 基金资助:
国家自然科学基金（51378395）和中车株洲电力机车有限公司大功率交流传动电力机车系统集成国家重点实验室开放课题基金（2017ZJKF08）资助项目

### Influence of Friction Coefficient on Wheel-rail Curve Squeal Noise

WANG Jin1, YANG Xinwen1,2, LIAN Songliang1

1. 1. Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804;
2. The State Key Laboratory of Heavy Duty AC Drive Electric Locomotive System Zntegration, Zhuzhou 412000
• Received:2017-04-24 Revised:2017-12-21 Published:2018-02-20

Abstract: In order to analyze whether the curve squeal is generated when the friction coefficient is constant, and discuss the influence of the friction coefficient on the contact characteristics of the wheel-rail and the intensity of the curve squeal noise, the curve squeal noise prediction model is established. The prediction model includes wheel-rail elastic vibration model, interaction model in time-domain and acoustic radiation model, and the correctness of the wheel-rail interaction model is verified by CONTACT software. The analysis results show that:the curve squeal can also appear in constant friction coefficient. The friction coefficient has no effect on the frequency of curve squeal, and the unstable curve squeal frequency is always related to the 0-nodal-circle and 3-nodal-diameter axial mode of the wheel, when the lateral displacement of wheelset is 5 mm and the lateral creepage is -0.01. The greater the friction coefficient is, the larger the intensity of curve squeal noise is. Whether or not there will be stick/slip oscillation can be determined by the number of peak values of the lateral force level in frequency-domain. The intensity of stick/slip oscillation can be expressed by the proportion of the sliding zone in the contact patch. The curve squeal frequency can be predicted by the frequency of the maximum of the lateral force level or the sound power level. Two critical friction coefficients are proposed:when the friction coefficient is less than 0.20, there will be no curve squeal; the curve squeal will occur when the friction coefficient is greater than or equal to 0.24; and there is a possibility of curve squeal when the friction coefficient is between 0.20 and 0.24.