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TECHNICAL PAPERS

Bifurcation Analysis of Self-Acting Gas Journal Bearings

[+] Author and Article Information
Cheng-Chi Wang, Cha’o-Kùang Chen

Department of Mechanical Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC

J. Tribol 123(4), 755-767 (Feb 05, 2001) (13 pages) doi:10.1115/1.1388302 History: Received August 29, 2000; Revised February 05, 2001
Copyright © 2001 by ASME
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References

Figures

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Model of a rigid rotor supported by gas film journal bearings
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The trajectory of rotor center at mr=7.0,8.3,9.2,10.0,15.0,20.0 kg (Figs. 2.1a2.6a) and phase portraits (Figs. 2.1b2.6b), and (Figs. 2.1c2.6c) and (Figs. 2.1d2.6d) power spectrum of rotor displacement in horizontal and vertical direction (at ω=2100 rad/s)
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Bifurcation diagrams (a) X(nT) and (b) Y(nT) versus rotor mass mr at ω=2100 rad/s
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The local bifurcation diagram of (a) X(nT) and (b) Y(nT) versus rotor mass mr at ω=2100 rad/s
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The Poincaré maps of rotor center trajectory at (a) mr=7.0, (b) 8.3, (c) 9.2, and (d) 20.0 kg
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The trajectory of rotor center at ω=950,1040,1081,1200,1300,1400 rad/s (Figs. 6.1a6.6a) and phase portraits (Figs. 6.1b6.6b), and (Figs. 6.1c6.6c) and (Figs. 6.1d6.6d) power spectrum of rotor displacement in horizontal and vertical direction (at mr=29.5 kg)
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Bifurcation diagrams (a) X(nT) and (b) Y(nT) versus rotor speed ω at mr=29.5 kg
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The local bifurcation diagram of (a) X(nT) and (b) Y(nT) versus rotor speed ω at mr=29.5 kg
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The Poincaré maps of rotor center trajectory at (a) ω=950, (b) 1040, (c) 1200, and (d) 1400 rad/s

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