Noise Modeling of Synchronous Belts

Abstract

This paper formulated noise sources of synchronous belt in terms of structure-borne noise and airborne noise. 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. Based on the analysis of impact dynamics of belt-sprocket tooth interface, the impact response, the friction-vibration interaction, and the airflow-induced acoustic wave are comprehensively modelled. 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 3 kHz to 10 kHz.

A Preliminary Studies of the Impact of a Conveyor Belt on the Noise Emission

“…A similar noise generation mechanism occurs on the drive pulleys of conveyors, where the drive is transmitted to the belt by friction force [42]. In the case of multi-groove belts and multi-V-belts, the phenomenon of air pumping also occurs [33,43]. The noise is caused by the flow of air as a result of the meshing of the belt and pulley.…”

“…Due to the quality requirements of customers, methods to determine and reduce noise have become one of the major engineering problems of synchronous belt drives [33]. In accordance with conducted studies, the main sources of noise associated with the belt-pulley interaction come from vibration of material structure, and friction [33,34]. Characteristic of belt transmissions are constant sounds associated with transverse vibrations of the belt and cyclic impacts from the meshing of the belt and pulley [35][36][37][38][39][40].…”

“…The number of publications on the effect of the belt used, and its properties on conveyor noise, are limited [32]. According to topical literature, the research carried out to determine the noise of rubber belts, commonly used to transfer movement and power in industrial machines or car engines, is worth noting [33]. Due to the quality requirements of customers, methods to determine and reduce noise have become one of the major engineering problems of synchronous belt drives [33].…”

“…According to topical literature, the research carried out to determine the noise of rubber belts, commonly used to transfer movement and power in industrial machines or car engines, is worth noting [33]. Due to the quality requirements of customers, methods to determine and reduce noise have become one of the major engineering problems of synchronous belt drives [33]. In accordance with conducted studies, the main sources of noise associated with the belt-pulley interaction come from vibration of material structure, and friction [33,34].…”

“…In the case of belt drives, here is an unavoidable displacement of the belt relative to the drive wheel due to the slip rate [41]. The slipping of the belt on a drive pulley causes frictional noise [33]. A similar noise generation mechanism occurs on the drive pulleys of conveyors, where the drive is transmitted to the belt by friction force [42].…”