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research-article

Investigation on Nonlinear Dynamic Characteristics of a New Rigid-Flexible Gear Transmission with Wear

[+] Author and Article Information
Zhibo Geng

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 40044, China Chongqing, Chongqing 400044 China 18696592882@163.com

Ke Xiao

174 Shazhengjie Shapingba District Chongqing, China 400044 China 490452934@qq.com

Jiaxu Wang

174 Shazhengjie Shapingba District Chongqing, 400044 China cquwjx@foxmail.com

Junyang Li

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China Chongqing, Chongqing 400044 China lijunyang1982@sina.com

1Corresponding author.

Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the Journal of Vibration and Acoustics. Manuscript received January 17, 2019; final manuscript received April 13, 2019; published online xx xx, xxxx. Assoc. Editor: Karsten Stahl.

ASME doi:10.1115/1.4043543 History: Received January 17, 2019; Accepted April 15, 2019

Abstract

At present, the mean value of the meshing stiffness and the gear backlash is a fixed value in the nonlinear dynamic model. In this study, wear is considered in the model of the gear backlash and time-varying stiffness. With the increase of the operating time, the meshing stiffness decreases and the gear backlash increases. A 6-degree-freedom nonlinear dynamic model of a new rigid-flexible gear pair is established with time-varying stiffness and time-varying gear backlash. The dynamic behaviors of the gear transmission system are studied through bifurcation diagrams with the operating time as control parameters. Then, the dynamic characteristics of the gear transmission system are analyzed using excitation frequency as control parameters at 4 operating time points. The bifurcation diagrams, Poincaré maps, FFT spectra, phase diagrams and time series are used to investigate the state of motion. The results can provide reference for gear transmission system with wear.

Copyright © 2019 by ASME
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