Nonlinear Dynamic Analysis of a Hydrodynamic Journal Bearing Considering the Effect of a Rotating or Stationary Herringbone Groove

[+] Author and Article Information
G. H. Jang, J. W. Yoon

PREM, Department of Mechanical Engineering, Hanyang University, Seoul, 133-791, Korea

J. Tribol 124(2), 297-304 (Jul 03, 2001) (8 pages) doi:10.1115/1.1401019 History: Received February 02, 2001; Revised July 03, 2001
Copyright © 2002 by ASME
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Coordinate system and groove pattern: (a) PJGS; and (b) GJPS
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Comparison of load capacity with experimental data by Hirs (1965)
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Speed profile of a rotating journal
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Pressure distributions along the axial center of a journal bearing at the steady state (z=L/2): (a) PJGS (Ng=8); (b) GJPS (Ng=8)
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Friction torque, input torque and power loss under static load: (a) friction torque; (b) input torque; and (c) power loss
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Trajectory under static load
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Load capacity due to variation of eccentricity
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Frequency spectra of reaction force and journal displacement of GJPS under static load: (a) reaction force; and (b) journal displacement
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Dynamic behavior due to shock: (a) impulsive force; (b) rotational speed; and (c) journal trajectory
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Dynamic behavior due to mass unbalance: (a) journal trajectory (Ng=8); (b) journal trajectory (Ng=4); (c) rotational speed; and (d) power loss.
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Frequency spectra of reaction force due to mass unbalance: (a) PJGS (Ng=8); (b) PJGS (Ng=4); (c) GJPS (Ng=8); and (d) GJPS (Ng=4).




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