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TECHNICAL PAPERS

Optimal Clearance Configuration of Fluid-Film Journal Bearings for Stability Improvement

[+] Author and Article Information
Koichi Matsuda, Yoichi Kanemitsu, Shinya Kijimoto

Department of Intelligent Machinery and Systems, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan

J. Tribol 126(1), 125-131 (Jan 13, 2004) (7 pages) doi:10.1115/1.1631018 History: Received March 06, 2002; Revised May 06, 2003; Online January 13, 2004
Copyright © 2004 by ASME
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References

Figures

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Configuration of a fluid-film journal bearing
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Variation of the cost for order of the Fourier series (α=0.1)
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Optimal clearance configuration of the designed bearings: (a) α=0.1, and (b) α=0.15.
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Typical circumferential pressure distribution for the optimal and circular bearings (ε=0.5,α=0.1, and L/D=0.1)
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Variation of the attitude angles for eccentricity ratios (α=0.1)
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Stiffness coefficients for the optimal and circular bearings (α=0.1 and L/D=0.1)
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Damping coefficients for the optimal and circular bearings (α=0.1 and L/D=0.1)
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Vertical rigid rotor radially supported by fluid-film journal bearings
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Onset speed of instability ps2 for the optimal and circular bearings: (a) α=0.1, and (b) α=0.15.
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Whirl-frequency ratio Ωs for the optimal and circular bearings (α=0.1)
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Effect of truncating Fourier coefficients on the onset speed of instability (α=0.1)

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