Decomposition of noise sources of synchronous belt drives

In this paper, the noise sources of synchronous belt are decomposed and formulated based on the analysis of the impact dynamics of belt-sprocket tooth interface. The impact/contact of belt-sprocket tooth and the vibration of belt span are modeled. The friction–vibrations interaction of belt tooth an...

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Bibliographic Details
Published in:Journal of sound and vibration 2013-04, Vol.332 (9), p.2239-2252
Main Authors: Chen, Gang (Sheng), Zheng, Hui, Qatu, Mohamad
Format: Article
Language:English
Subjects:
Acoustic noise
Acoustics
Belts
Decomposition
Noise
Spectral signatures
Synchronous
Vibration
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Summary:In this paper, the noise sources of synchronous belt are decomposed and formulated based on the analysis of the impact dynamics of belt-sprocket tooth interface. The impact/contact of belt-sprocket tooth and the vibration of belt span are modeled. The friction–vibrations interaction of belt tooth and the airflow-induced acoustic wave during belt-sprocket tooth engagement are comprehensively formulated. The structure-borne noise consists of structural impact noise and friction-induced noise. The airborne noise is due to airflow-induced acoustic wave during belt-sprocket tooth engaging. The spectral signatures of the varied noise are quantified, and the case studies are given to illustrate the influences of the tooth parameters and operation conditions on noise. The noise due to belt span vibration under impact ranges from hundreds to several thousand Hz. The impact noise, friction-induced noise and airflow-induced noise of belt tooth ranges from 3kHz to 10kHz. ► Synchronous belt noise sources are decomposed as three categories. ► The impact, friction-induced and airflow-induced noises are formulated. ► The impact-induced belt span noise ranges from hundreds to thousands Hz. ► The friction-induced noise and airflow-induced noise ranges from 3 to 10kHz.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2012.11.030