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TECHNICAL PAPERS

A Theoretical Analysis of Floating Bush Journal Bearing With Axial Oil Film Rupture Being Considered

[+] Author and Article Information
Kiyoshi Hatakenaka, Masato Tanaka, Kenji Suzuki

Department of Engineering Synthesis, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8656, Japan

J. Tribol 124(3), 494-505 (May 31, 2002) (12 pages) doi:10.1115/1.1454104 History: Received May 22, 2001; Revised July 31, 2001; Online May 31, 2002
Copyright © 2002 by ASME
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References

Figures

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Floating bush journal bearing in very high speed operation
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Variation of density with pressure
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Flow chart for calculating steady-state variables of inner oil film
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Flow chart for calculating equilibrium of floating bush journal bearing
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Flow chart for calculating rotordynamic coefficients of inner oil film
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Jeffcott rotor supported in floating bush journal bearings
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The variation of bush-to-shaft speed ratio with shaft speed
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The variation of driving torque on inner surface of floating bush with shaft speed
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The variation of floating bush eccentricity ratio with shaft speed
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The variation of spring coefficient KXY1 with shaft speed
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The variation of damping coefficient CXX1 with shaft speed
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Stability chart (Pin1=0.012,γ=0.15)
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Stability chart (γ=0.15)
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The variation of real and imaginary parts of eigenvalues with shaft speed (λ1=6)
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Loci of unstable whirling: (a) lower speed; and (b) higher speed.

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