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C. Villa, J.-J. Sinou and F. Thouverez Stability and vibration analysis of a complex flexible rotor bearing system

By C. Villa, J-j. Sinou and F. Thouverez

Abstract

This paper presents the non-linear dynamic analysis of a flexible unbalanced rotor supported by ball bearings. The rolling element bearings are modeled as two-degree-of-freedom elements where the kinematics of the rolling elements are taken into account, as well as the internal clearance and the Hertz contact non-linearity. In order to calculate the periodic response of this non-linear system, the harmonic balance method is used. This method is implemented with an exact condensation strategy to reduce the computational time. Moreover, the stability of the non-linear system is analyzed in the frequency-domain by a method based on a perturbation applied to the known harmonic solution in the time domain

Topics: rolling bearings, non-linear dynamic, stability, harmonic balance method, bearing clearance, Hertz
Year: 2008
OAI identifier: oai:CiteSeerX.psu:10.1.1.372.3727
Provided by: CiteSeerX
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