Open Access

ARTICLE

A Simplified Formulation to Estimate Influence of Gearbox Parameters on the Rattle Noise

by Jidong Zhang, Wentao Sui, Jaspreet Dhupia

1 School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
2 School of Mechanical Engineering, Shandong University of Technology, Zibo, 255000, China.
3 Department of Mechanical Engineering, University of Auckland, Auckland, 1010, New Zealand.
* Corresponding Author: Jidong Zhang. Email: jidong Zhang@e.ntu.edu.sg.

Sound & Vibration 2019, 53(2), 38-49. https://doi.org/10.32604/sv.2019.04362

Abstract

Occurrence of gear rattle in transmission systems can result in severe vibration and noise, which in applications such as automobiles is an important source of user discomfort. As a result , the reduction of the rattling noise has attracted lot of concerns. The rattling noise level is affected by several gearbox parameters, an understanding of which is essential to prevent the expensive design modifications at later stages of product development. To develop such understanding at the gearbox design stage, this paper analytically evaluates the gear parameters’ effect on the root mean square of the wheel gear acceleration under idling condition, which is known to be linearly correlated to the rattling noise level. Therefore, this evaluation allows for an investigation of the gear parameters’ influence on the rattling noise as well. This method is then verified by comparing the analytical results with the simulation results from a dynamic model built in SIMPACK as well as previously published experimental results. Thus, the proposed analytical evaluation method can optimize the gearbox specifications at the design stage to reduce the gear rattle noise level.

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Keywords

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