乘用车子午线轮胎泵浦噪声机理的实验-数值混合分析方法

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摘要汽车在中高速行驶（乘用车超50km/h, 卡车超80km/h）时，轮胎噪声取代其他部分噪声成为行驶噪声的主声源。轮胎噪声产生机理主要分为三种：泵浦噪声、振动噪声以及空气动力学噪声。其中泵浦噪声与轮胎花纹设计有关，属于可设计噪声。如何确定声源的频谱特性，进而预测轮胎噪声仍然是一个难点问题。本文提出一种泵浦噪声源识别的实验-数值混合分析方法。其基本的假设是：花纹横沟在进入地面和离开地面时产生气流，花纹纵沟将该气流收集，在轮胎接地前端和后端辐射出噪声；该噪声的大小与轮胎和地面形成的声场有关，也和轮胎花纹的节距排列有关。所提出的方法包括雕刻花纹轮胎噪声测试、轮胎声场阻抗数值分析、以及声源辨识三部分；通过在频域反演噪声传播过程辨识不同横沟的声源；通过雕刻花纹轮胎进行了噪声实验验证，说明了本方法的有效性。

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	危银涛
	郑小刚
	冯启章
	冯希金
	王昊
	陈亚龙

关键词 ：轮胎花纹, 泵浦噪声, 声阻抗, 节距排列, 实验-数值混合分析, 噪声反演

Abstract：

Tire noise dominates vehicle noise after certain velocity e.g. 50km/h for car and 80km/h for truck, which includes three main categories: air pumping noise, vibration noise and aero-dynamical noise. Air pumping noise is highly dependent on tire pattern configuration, which is a designable variable. It is still a challenge to determine the pattern noise source and to predict the noise spectrum for a given tire pattern design. This paper proposed a hybrid experimental-numerical method for identifying the air pumping source spectrum. The basic hypothesizes is that lateral groove produces airflow when entering and leaving contact patch while longitudinal groove collects airflow and emits noise. The radiated noise spectrum depends on the sound impedance properties of the sound chamber around the contact patch and the tread pattern pitch arrangement. The proposed scheme involves three parts: 1. measurement of cut pattern tire noise spectrum; 2. numerical simulation of the sound impedance of the sound field. 3. sound source identification by inverse calculation. Through inverse analysis of the sound propagation of the sound field in the frequency domain and comparing with the model tire noise, the proposed method has been successfully validated.

Key words： tire pattern air pumping noise acoustic impedance pitch arrangement hybrid experimental-numerical method noise inverse analysis

收稿日期: 2013-10-09 出版日期: 2015-06-15

引用本文:

危银涛, 郑小刚, 冯启章, 冯希金, 王昊, 陈亚龙. 乘用车子午线轮胎泵浦噪声机理的实验-数值混合分析方法[J]. 振动与冲击, 2015, 34(11): 166-172.
Wei Yintao, Zheng Xiaogang, Feng Qizhang, Feng Xijing, Wang Hao, Chen yaloing. A Hybrid numerical-experimental analysis for radial tire air pumping noise generation mechanism. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(11): 166-172.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I11/166

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