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TECHNICAL PAPERS

Stability Analysis of a Hydrodynamic Journal Bearing With Rotating Herringbone Grooves

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

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

J. Tribol 125(2), 291-300 (Mar 19, 2003) (10 pages) doi:10.1115/1.1506326 History: Received February 19, 2002; Revised July 10, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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References

Bouchard,  G., Lau,  L., and Talke,  F. E., 1987, “An Investigation of Nonrepeatable Spindle Runout,” IEEE Trans. Magn., 23(5), pp. 3687–3689.
Pai,  R., and Majumdar,  B. C., 1991, “Stability of Submerged Oil Journal Bearings under Dynamic Load,” Wear, 146, pp. 125–135.
Jonnadula,  R., Majumdar,  B. C., and Rao,  N. S., 1997, “Stability Analysis of Flexibly Supported Rough Submerged Oil Journal Bearings,” Tribol. Trans., 40(3), pp. 437–444.
Raghunandana,  K., and Majumdar,  B. C., 1999, “Stability of Journal Bearing Systems Using Non-Newtonian Lubricants: A Non-Linear Transient Analysis,” Tribol. Int., 32, pp. 179–184.
Kakoty,  S. K., and Majumdar,  B. C., 2000, “Effect of Fluid Inertia on Stability of Oil Journal Bearings,” ASME J. Tribol., 122, pp. 741–745.
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 Yoon,  J. W., 2002, “Nonlinear Dynamic Analysis of a Hydrodynamic Journal Bearing Due to the Effect of a Rotating or Stationary Herringbone Groove,” ASME J. Tribol., 124, pp. 297–304.
Kang,  K., Rhim,  Y., and Sung,  K., 1996, “A Study of the Oil-Lubricated Herringbone-Grooved Journal Bearing-Part 1: Numerical Analysis,” ASME J. Tribol., 118, pp. 906–911.
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.
Newland, D. E., 1989, Mechanical Vibration Analysis and Computation, Longman Scientific and Technical.
Nayfeh, A. H., and Mook, D. T., 1979, Nonlinear Oscillations, John Wiley & Sons, Inc.
Hayashi, C., 1985, Nonlinear Oscillations in Physical Systems, Princeton University Press, Princeton, New Jersey.

Figures

Grahic Jump Location
Coordinate system of the hydrodynamic journal bearing with rotating herringbone grooves
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Variation of the dynamic coefficients of the hydrodynamic journal bearing at 15,000 rpm (ε=0.8 and Ng=4): (a) stiffness coefficient; and (b) damping coefficient.
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Variation of the direct stiffness coefficients for increasing rotational speed: (a) ε=0.4(Ng=4); (b) ε=0.4(Ng=8); (c) ε=0.8(Ng=4); and (d) ε=0.8(Ng=8).
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Variation of the cross-coupled stiffness coefficients for increasing rotational speed: (a) ε=0.4(Ng=4); (b) ε=0.4(Ng=8); (c) ε=0.8(Ng=4); and (d) ε=0.8(Ng=8).
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Variation of the damping coefficients for increasing rotational speed: (a) ε=0.4(Ng=4); (b) ε=0.4(Ng=8); (c) ε=0.8(Ng=4); and (d) ε=0.8(Ng=8).
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Stability chart of the hydrodynamic journal bearing with rotating grooves: (a) ε=0.4(Ng=4); (b) ε=0.4(Ng=8); (c) ε=0.8(Ng=4); and (d) ε=0.8(Ng=8).
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Time response of the whirl radius in the stable, critically stable and unstable positions: (a) stable; (b) critical; and (c) unstable.

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