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TECHNICAL PAPERS

Stability Analysis of a Rough Journal Bearing Considering Cavitation Effects

[+] Author and Article Information
T. V. V. L. N. Rao

Mechanical Group, Birla Institute of Technology and Science, Pilani-333 031, India

Jerzy T. Sawicki

Bently & Muszynska Endowed Chair in Rotating Machinery and Professor, Rotor-Bearing Dynamics & Diagnostics Laboratory, Fenn College of Engineering, Cleveland State University, Cleveland, OH 44115-2425

J. Tribol 127(1), 112-119 (Feb 07, 2005) (8 pages) doi:10.1115/1.1828451 History: Received February 20, 2004; Revised August 29, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Tzeng,  S. T., and Saibel,  E., 1967, “Surface Roughness Effect on Slider Bearing Lubrication,” ASLE Trans., 10, p. 334.
Christensen,  H., and Tonder,  K., 1973, “The Hydrodynamic Lubrication of Rough Journal Bearings,” ASME J. Lubr. Technol., 95, pp. 166–171.
Tripp,  J. H., 1983, “Surface Roughness Effects in Hydrodynamic Lubrication: The Flow Factor Method,” ASME J. Lubr. Technol., 105, pp. 458–464.
Patir,  N., and Cheng,  H. S., 1978, “An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication,” ASME J. Lubr. Technol., 100, pp. 12–17.
Patir,  N., and Cheng,  H. S., 1979, “Application of Average Flow Model to Lubrication Between Rough Sliding Surfaces,” ASME J. Lubr. Technol., 101, pp. 220–230.
Elrod,  H. G., 1979, “A General Theory for Laminar Lubrication With Reynolds Roughness,” ASME J. Lubr. Technol., 101, pp. 8–14.
Majumdar,  B. C., and Ghosh,  M. K., 1990, “Stability of a Rigid Rotor Supported on Rough Oil Journal Bearings,” ASME J. Tribol., 112, pp. 73–77.
Ramesh,  J., and Majumdar,  B. C., 1995, “Stability of Rough Journal Bearings Using Nonlinear Transient Method,” ASME J. Tribol., 117, pp. 691–695.
Elrod,  H. G., 1981, “A Cavitation Algorithm,” ASME J. Lubr. Technol., 103, pp. 350–354.
Vijayaraghavan,  D., and Keith,  T. G., 1990, “An Efficient, Robust and Time Accurate Numerical Scheme Applied to Cavitation Algorithm,” ASME J. Tribol., 112, pp. 44–51.
Boedo,  S., and Booker,  J. F., 1997, “Surface Roughness and Structural Inertia in a Mode Based Mass-Conserving Elastohydrodynamic Lubrication Model,” ASME J. Tribol., 119, pp. 449–455.
Wang,  P., Keith,  T. G., and Vaidyanathan,  K., 2002, “Combined Surface Roughness Pattern and Non-Newtonian Effects on the Performance of Dynamically Loaded Journal Bearings,” STLE Tribol. Trans., 123, pp. 134–143.
Harp,  S. R., and Salant,  R. F., 2001, “An Average Flow Model of Rough Surface Lubrication With Inter-Asperity Cavitation,” ASME J. Tribol., 123, pp. 134–143.
Wang,  Y., Wang,  Q. J., and Lin,  C., 2003, “Mixed Lubrication of Coupled Journal—Thrust Bearing Systems Including Mass Conserving Cavitation,” ASME J. Tribol., 125, pp. 747–755.
Lund, J. W., and Thomsen, K. K., 1978, “Calculation Method and Data for the Dynamic Coefficients of Oil-Lubricated Journal Bearings,” in Topics in Fluid Bearing and Rotor Bearing System Design and Optimization, ASME, New York, pp. 1–28.
Hryniewicz,  P., Szeri,  A. Z., and Jahanmir,  S., 2001, “Application of Lubrication Theory to Fluid Flow in Grinding: Part II—Influence of Wheel and Workpiece Roughness,” ASME J. Tribol., 123, pp. 101–107.
Rao,  T. V. V. L. N., and Sawicki,  J. T., 2002, “Linear Stability Analysis for a Hydrodynamic Journal Bearing Considering Cavitation Effects,” STLE Tribol. Trans., 45, pp. 450–456.
Rao,  T. V. V. L. N., and Sawicki,  J. T., 2004, “Stability Characteristics of Herringbone Grooved Journal Bearings Incorporating Cavitation Effects,” ASME J. Tribol., 126, pp. 281–287.

Figures

Grahic Jump Location
(a) Schematic of rough journal bearing. (b) Schematic of rough HG journal bearing.
Grahic Jump Location
(a) Threshold speed variation with isotropic roughness. (b) Whirl frequency ratio variation with isotropic roughness.
Grahic Jump Location
(a) Threshold speed variation with transverse roughness. (b) Whirl frequency ratio variation with transverse roughness.
Grahic Jump Location
(a) Threshold speed variation with longitudinal roughness. (b) Whirl frequency ratio variation with longitudinal roughness.
Grahic Jump Location
(a) Threshold speed variation with rough HG bearing. (b) Whirl frequency ratio variation with rough HG bearing.
Grahic Jump Location
(a) Threshold speed variation with rough HG journal. (b) Whirl frequency ratio variation with rough HG journal.

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