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Title: Running characteristics of aerodynamic bearing with self-lifting capability at low rotational speed
Authors: Stolarski, TA
Issue Date: 2011
Publisher: Hindawi Publishing Corporation
Citation: Advances in Tribology, Artn: 973740, Feb 2011
Abstract: An aerodynamic journal bearing that is capable of self-generating squeeze-film pressure is presented and its dynamic characteristics investigated numerically and experimentally. A numerical method based on a time-marching static model was applied to assess the orbit trajectory path of the rotor upon a perturbation. Experimental results were obtained to validate the effect of the self-generated squeeze-film pressure on the stability of the rotor. Analyzing the Fast Fourier Transform (FFT) responses of the rotor orbits enabled identification of self-excited whirling instabilities. Both numerical and experimental results showed that increasing the squeeze-film effect of the bearing could raise the threshold speed of instability.
Description: This article has been made available through the Brunel Open Access Publishing Fund - Copyright @ 2011 Tadeusz Adam Stolarski.
ISSN: 1687-5915
Appears in Collections:Mathematical Physics
Mechanical and Aerospace Engineering
Brunel OA Publishing Fund
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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