In this paper, a new rotor-ball bearing-stator coupling system dynamics model is established for simulating the practical whole aero-engine vibration. The main characteristics of the new model are as follows: (1) the coupling effect between rotor, ball bearing, and stator is fully considered; (2) the elastic support and the squeeze film damper are considered; (3) the rotor is considered as an Euler free beam of equal-section model, and its vibration is analyzed through truncating limited modes; (4) nonlinear factors of ball bearing such as the clearance of bearing, nonlinear Hertzian contact force, and the varying compliance vibration are modeled; and (5) rubbing fault between rotor and stator is considered. The Zhai method, which is a new explicit fast numerical integration method, is employed to obtain system’s responses, and the whole aero-engine vibration characteristics are studied. Finally, aero-engine tester including casing is established to carry out rubbing fault experiment, the simulation results from rotor-ball bearing-stator coupling model are compared with the experiment results, and the correctness of the new model is verified to some extent.
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December 2009
Research Papers
A New Rotor-Ball Bearing-Stator Coupling Dynamics Model for Whole Aero-Engine Vibration
G. Chen
G. Chen
College of Civil Aviation,
e-mail: cgzyx@263.net
Nanjing University of Aeronautics and Astronautics
, Nanjing, 210016, P. R. China
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G. Chen
College of Civil Aviation,
Nanjing University of Aeronautics and Astronautics
, Nanjing, 210016, P. R. Chinae-mail: cgzyx@263.net
J. Vib. Acoust. Dec 2009, 131(6): 061009 (9 pages)
Published Online: November 19, 2009
Article history
Received:
September 25, 2008
Revised:
July 29, 2009
Online:
November 19, 2009
Published:
November 19, 2009
Citation
Chen, G. (November 19, 2009). "A New Rotor-Ball Bearing-Stator Coupling Dynamics Model for Whole Aero-Engine Vibration." ASME. J. Vib. Acoust. December 2009; 131(6): 061009. https://doi.org/10.1115/1.4000475
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