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Time-Frequency Characterization of a Cracked Rotor Sliding Bearing System With Rotor-Stator-Rub

[+] Author Affiliations
Alfayo A. Alugongo

Vaal University of Technology, Vereeniging, South Africa

Paper No. IMECE2010-40203, pp. 303-310; 8 pages
doi:10.1115/IMECE2010-40203
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 13: Sound, Vibration and Design
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4450-2
  • Copyright © 2010 by ASME

abstract

Constitutive dynamics of a cracked rotor supported on sliding bearings are modeled and analyzed by Wavelet Transform. The effect of the ensuing non-linear disturbances, namely, oil film forces, rotor stator rub forces, and a switching crack on the rotor shaft is numerically simulated. Subsequently, the system response is evaluated under various scenarios and the results reported. A sensitivity analysis on various system parameters is performed and discussed to emphasize the modeling. The current technique as a tool for condition monitoring of rotors has been demonstrated by analysis in this paper.

Copyright © 2010 by ASME
Topics: Bearings , Rotors , Stators

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