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TECHNICAL PAPERS

Improvement of Operating Characteristics of High-Speed Hydrodynamic Journal Bearings by Optimum Design: Part I— Formulation of Methodology and Its Application to Elliptical Bearing Design

[+] Author and Article Information
H. Hashimoto

Dept. of Mechanical Engineering, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japane-mail: hiromu@keyaki.cc.u-tokai.ac.jp

K. Matsumoto

Graduate School of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan

J. Tribol 123(2), 305-312 (Jun 08, 2000) (8 pages) doi:10.1115/1.1308019 History: Received May 20, 1999; Revised June 08, 2000
Copyright © 2001 by ASME
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References

Figures

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Flow chart of optimum design methodology for high-speed hydrodynamic journal bearing
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Geometry of elliptical journal bearing
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Variation of optimized vertical radial clearance with journal rotational speed
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Variation of optimized horizontal radial clearance with journal rotational speed
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Variation of optimized bearing width-to-diameter ratio with journal rotational speed
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Variation of optimized bearing orientation angle with journal rotational speed
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Variation of optimized ellipticity ratio with journal rotational speed
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Variation of maximum averaged oil film temperature across the film thickness with journal rotational speed
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Variation of leakage oil flow rate with journal rotational speed
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Variation of whirl onset speed with journal rotational speed
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Relation between oil film components and pressure distribution in optimized elliptical journal bearings for W=2 [kN],ns=140 [rps],λopt=0.513,CHopt=130 [μm], and CVopt=84.4 [μm]

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