The diagnostic analysis of the fault coupling effects in planet bearing

Abstract

The purpose of this paper is to investigate the fault coupling effects in the planet bearing as well as the corresponding vibration signatures in the resultant vibration spectrum. In a planetary gear application, the planet bearing can not only spin around the planet gear axis, but also revolve about the sun gear axis and this rotating mechanism poses a big challenge for the diagnostic analysis of the planet bearing vibration spectrum. In addition, the frequency component interaction and overlap phenomenon in the vibration spectrum caused by the fault coupling effect can even worsen the diagnosis results. To further the understanding of the fault coupling effects in a planet bearing, a 34° of freedom planetary gear model with detailed planet bearing model was established to obtain the dynamic response in the presence of various bearing fault scenarios. The method of modelling the bearing distributed faults and localized faults has been introduced in this paper, which can be further incorporated into the planetary gear model to obtain the faulted vibration signal. The “benchmark” method has been adopted to enhance the planet bearing fault impulses in the vibration signals and in total, the amplitude demodulation results from 20 planet bearing fault scenarios have been investigated and analyzed. The coherence estimation over the vibration frequency domain has been proposed as a tool to quantify the fault impact contribution from different fault modes and the results suggested that the outer raceway fault contributes most to the resultant planet bearing vibration spectrum in all the investigated fault scenarios.

Publication DOI: https://doi.org/10.1016/j.engfailanal.2019.104266
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences
Additional Information: © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: Amplitude demodulation,Coherence estimation,Fault coupling effect,Lumped-parameter model,Planet bearing fault,Materials Science(all),Engineering(all)
Publication ISSN: 1350-6307
Full Text Link:
Related URLs: https://www.sci ... 5953?via%3Dihub (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-01
Published Online Date: 2019-11-09
Accepted Date: 2019-11-04
Authors: Xue, Song
Wang, Congsi
Howard, Ian
Lian, Peiyuan
Chen, Gaige
Wang, Yan
Yan, Yuefei
Xu, Qian
Shi, Yu
Jia, Yu (ORCID Profile 0000-0001-9640-1666)
Zheng, Yuanpeng
Wang, Na

Export / Share Citation


Statistics

Additional statistics for this record