On the Running Noise of Toothed Belt Drive : 2nd Report, Influence of Running Condition and Some Noise Reduction Methods

Kubo, Aizoh; Ando, Toshiaki; Sato, Susumu; Aida, Toshio; Hoshiro, Takeshi

doi:10.1299/jsme1958.14.998

Cited by 14 publications

(6 citation statements)

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“…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 measured amplitude of the sound pressure from the impacts ought to be proportional to the width and speed of the belt.…”

Section: Introductionmentioning

confidence: 52%

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

et al. 2022

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This article performs a comparative analysis of noise generated by conveyor belts with different design parameters. The study was conducted for belts with the same tensile strength, differing in the physical parameters of the cover rubber. Noise emission measurements were performed on a laboratory belt conveyor. The test on the stand allowed for the determination of the noise emission as a function of variable operating parameters: the tensioning force and linear speed of the belt. Research results indicated a significant impact of speed on the emitted noise. The effect of belt tension on noise emission is small, and it is definitely less significant than the effect of linear speed. The results also show that it is possible to select a conveyor belt that emits less noise under the same operating conditions. The analysis of the results allowed us to determine the impact of the physical parameters of the belt covers on the emitted noise.

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Section: Introductionmentioning

confidence: 52%

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

et al. 2022

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“…As for the sound generated by transverse vibration of the belt, it must be pointed out that it is a forced vibration due to the polygon effect of the wheel. Therefore, when the wheel approaches an angular velocity yielding a meshing frequency that coincides with the natural frequency of the transverse vibration of the belt, such vibration becomes very large; Kubo et al [21] and then Tokoro et al [22] showed that the transverse vibration of the belt becomes stronger along with increasing belt tension and decreasing bending stiffness. Therefore, if both belt tension and natural frequency are high, the noise of transverse vibration of the belt becomes very large and masks all other noises.…”

Section: Main Causes Of Belt Noisementioning

confidence: 99%

Multi-body modelling of timing belt dynamics

Callegari

Cannella

Ferri³

2003

Proceedings of the Institution of Mechanical Engineers, Part K:

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Although timing belt drives have recently been increasingly used in mechanical design, their behaviour is still considered to a large extent to be unpredictable, especially under varying operative conditions. The acoustic emission of the transmissions, above all, has been thoroughly investigated in past years, but noise still represents an unresolved problem for many applications and a concern for belt designers; therefore, the availability of good predictive models would be very useful for both design and application phases. The present work describes a multi-body numerical model that has been developed for the characterization of the dynamic behaviour of timing belt transmissions, with the nal goal of assessing the acoustic radiation of a given design. Modelling and simulation have been performed by means of commercial software packages, but more additional programming was required to obtain dynamic models capable of simulating the complex behaviour of toothed belt transmissions. Several experimental tests have been performed to identify the many parameters that in uence system dynamics and to validate the resulting computer aided engineering (CAE) model.

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“…Kubo et al [4] found also that, when the tension is high enough, transverse vibration resonates with meshing frequency, due to the polygonal effect at the pulleybelt interface. Generally, belt noise increases with belt speed, tension, width and the polygonal effect [5]. Some noise reduction methods have also been investigated.…”

Section: Noise Generation Mechanisms and Featuresmentioning

confidence: 99%

“…Some noise reduction methods have also been investigated. Kubo et al [5] suggested softening the bottom lands of the belt or the tooth tip lands of the pulley, adding an idler on the tight strand and making a non-cylindrical pulley shape, preferring, for example, a barrelled shape. Alternatively, Kagotani et al [6] showed that the noise can be effectively reduced by a suitable selection of the pitch difference between belt and pulley.…”

Section: Noise Generation Mechanisms and Featuresmentioning

confidence: 99%

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A new approach to the measurement of transverse vibration and acoustic radiation of automotive belts using laser Doppler vibrometry and acoustic intensity techniques

Sante

Rossi

2001

Meas. Sci. Technol.

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This work aims at utilizing state-of-the-art and powerful measurement techniques to develop a tool for estimating the acoustic radiation of synchronous belts during the design stage. One of the main objects of this work is that of reducing the large number of tests currently employed. Effective measurement technologies, such as laser and acoustic intensity measurement techniques, are employed to support the entire development of the predicting tool, from the analysis of the noise and vibration phenomena to the validation of the numerical models. The proposed method can also be applied successfully to the analysis of noise generating mechanisms, especially belt vibration responses.In a previous work, it has been shown that the noise radiated at meshing frequency by a belt drive, simply composed of two pulleys and driven by an electric motor, can be estimated using vibration measurements, taken by a scanning laser Doppler vibrometer, as inputs for a boundary element model. The same approach is here extended to a more complex test bench, with an internal combustion engine cylinder head giving additional excitation. The test bench has been designed and realized in order to reduce the noise radiation due to interfering sources (electric motor, cooling system etc) and to make it possible to measure the noise contribution from the belt drive only.Reference noise measurements have been performed by acoustic intensity techniques. The sound power values obtained from these measurements have been compared to those obtained from the boundary element model. The techniques employed in this work have been shown to be able to analyse resonance and meshing phenomena on a real belt drive geometry, as had not been done before, based on the literature survey reported.

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On the Running Noise of Toothed Belt Drive : 2nd Report, Influence of Running Condition and Some Noise Reduction Methods

Cited by 14 publications

References 0 publications

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

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

Multi-body modelling of timing belt dynamics

A new approach to the measurement of transverse vibration and acoustic radiation of automotive belts using laser Doppler vibrometry and acoustic intensity techniques

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