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Appl. Sci. 2017, 7(7), 678; doi:10.3390/app7070678

Effects of Tooth Breakage Size and Rotational Speed on the Vibration Response of a Planetary Gearbox

State Key Lab of Power Systems, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
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Author to whom correspondence should be addressed.
Academic Editor: César M. A. Vasques
Received: 1 April 2017 / Revised: 19 May 2017 / Accepted: 13 June 2017 / Published: 1 July 2017
(This article belongs to the Section Mechanical Engineering)
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Abstract

A nonlinear dynamic model for a planetary gearbox with tooth breakage fault is built based on an improved rigid multibody model, and the effects of tooth breakage size and rotational speed on the vibration response of the planetary gearbox are investigated numerically and experimentally. A time-varying mesh stiffness model of planetary gears with tooth breakage fault is established. Dynamic simulations of a healthy planetary gear and seven fault gears with different breakage sizes under several rotational speeds are carried out. Experiments for healthy, half tooth breakage fault and whole tooth breakage fault planetary gears under several rotational speeds are performed. Amplitude analysis, spectrum analysis and envelope spectrum analysis are applied on the numerical and experimental vibration signals. The dynamic model is validated by experiment. The analysis results reveal the resonance and modulation characteristics in the vibration response, and the law of the vibration changes with breakage size and rotational speed. View Full-Text
Keywords: planetary gear; tooth breakage fault; nonlinear dynamic model; mesh stiffness; vibration response planetary gear; tooth breakage fault; nonlinear dynamic model; mesh stiffness; vibration response
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yang, W.; Jiang, D.; Han, T. Effects of Tooth Breakage Size and Rotational Speed on the Vibration Response of a Planetary Gearbox. Appl. Sci. 2017, 7, 678.

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