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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Bootsma, J., 1975, “Liquid-Lubricated Spiral-Groove Bearings,” Phillips Research Reports-Supplements, No. 7, The Netherlands.
Hirs,  G. G., 1965, “The Load Capacity and Stability Characteristics of Hydrodynamic Grooved Journal Bearings,” ASLE Trans., 8, pp. 296–305.
Bonneau,  D., and Absi,  J., 1994, “Analysis of Aerodynamic Journal Bearings With Small Number of Herringbone Grooves by Finite Element Method,” ASME J. Tribol., 116, pp. 698–704.
Zirkelback,  N., and San Andres,  L., 1998, “Finite Element Analysis of Herringbone Groove Journal Bearings: A Parametric Study,” ASME J. Tribol., 120, pp. 234–240.
Jang,  G. H., and Kim,  Y. J., 1999, “Calculation of Dynamic Coefficients in a Hydrodynamic Bearing Considering Five Degrees of Freedom for a General Rotor-Bearing System,” ASME J. Tribol., 121, pp. 499–505.
Goenka,  P. K., 1984, “Dynamically Loaded Journal Bearings: Finite Element Method Analysis,” ASME J. Tribol., 106, pp. 429–439.
Malik,  M., Bhargava,  S. K., and Sinhasan,  R., 1989, “The Transient Response of a Journal in Plane Hydrodynamic Bearing During Acceleration and Deceleration Periods,” Tribology Transactions, 32, pp. 61–69.
Pai,  R., and Majumdar,  B. C., 1991, “Stability of Submerged Oil Journal Bearings under Dynamic Load,” Wear, 146, pp. 125–135.


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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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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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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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