Journal
ENGINEERING FAILURE ANALYSIS
Volume 48, Issue -, Pages 185-200Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfailanal.2014.11.015
Keywords
Signal modeling; Dynamic simulation; Transmission path; Tooth crack; Sidebands
Funding
- Natural Science and Engineering Research Council of Canada (NSERC)
- China Scholarship Council (CSC)
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In a planetary gearbox, there are multiple vibration sources, and the transmission path of vibration signals changes due to the rotation of the carrier. This study aims to model the vibration signals of a planetary gearbox and investigate the vibration properties in the healthy condition and in the cracked tooth condition. A dynamic model is developed to simulate the vibration source signals. A modified Hamming function is proposed to represent the effect of the transmission path. By incorporating the effect of multiple vibration sources and the effect of transmission path, resultant vibration signals of a planetary gearbox are obtained. Through analyzing the resultant vibration signals, some vibration properties of a planetary gearbox are revealed and the fault symptoms of sun gear tooth crack are identified and located. Finally, the proposed approach is experimentally verified. (C) 2014 Elsevier Ltd. All rights reserved.
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