A Hybrid numerical-experimental analysis for radial tire air pumping noise generation mechanism

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (11) : 166-172.

Wei Yintao, Zheng Xiaogang, Feng Qizhang, Feng Xijing, Wang Hao, Chen yaloing

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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

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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[J]. Journal of Vibration and Shock, 2015, 34(11): 166-172

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