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TECHNICAL PAPERS

Prediction of the Stability Envelope of Rotor-Bearing System

[+] Author and Article Information
J. K. Wang

Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803

M. M. Khonsari1

Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803khonsari@me.lsu.edu

1

Corresponding author.

J. Vib. Acoust 128(2), 197-202 (Jun 21, 2005) (6 pages) doi:10.1115/1.2159035 History: Received December 07, 2004; Revised June 21, 2005

A method is developed for predicting the stability envelope of a rotor-bearing system using the Hopf bifurcation theory. Results are compared to published literature obtained using a trial-and-error method.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

Illustration of the stability envelope Rs in the clearance circle (5)

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Figure 2

Model of a rigid rotor supported by two journal bearings (11)

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Figure 3

Periodic solutions of the equations of motion

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Figure 4

Comparison of the two stability envelopes Rs at ω¯=2.63

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Figure 5

Comparison of the two stability envelopes Rs at ω¯=2.60

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Figure 6

Comparison of the two stability envelopes Rs at ω¯=2.55

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