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TECHNICAL NOTE

Stability of Flexibly Supported Oil Journal Bearings Using Non-Newtonian Lubricants: Linear Perturbation Analysis

[+] Author and Article Information
K. Raghunandana, B. C. Majumdar, R. Maiti

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur-721 302, India

J. Tribol 123(3), 651-654 (Jul 06, 2000) (4 pages) doi:10.1115/1.1340632 History: Received January 06, 2000; Revised July 06, 2000
Copyright © 2001 by ASME
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References

Safar,  Z. S., 1979, “Journal Bearings Operating With Non-Newtonian Lubricant Films,” Wear, 53, pp 95–101.
Safar,  Z. S., 1979, “Dynamically Loaded Bearings Operating With Non-Newtonian Lubricant Films,” Wear, 55, pp. 295–304.
Harnoy,  A., and Hanin,  M., 1974, “Second Order, Elastico-Viscous Lubricants in Dynamically Loaded Bearings,” ASLE Trans., 17, pp. 166–171.
Harnoy,  A., and Philippoff,  W., 1976, “Investigation of Elastico-Viscous Hydrodynamic Lubrication of Sleeve Bearing,” ASLE Trans., 19, pp. 301–308.
Tayal,  S. P., Sinhasan,  R., and Singh,  D. V., 1982, “Analysis of Hydrodynamic Journal Bearings Having Non-Newtonian Lubricants Using the Finite Element Method,” ASLE Trans., 25, pp. 410–416.
Dien,  I. K., and Elrod,  H. G., 1983, “A Generalised Steady-State Reynolds Equation for Non-Newtonian Fluids, With Application to Journal Bearings,” ASME J. Lubr. Technol., 105, pp. 385–390.
Derdouri,  A., and Carreau,  P. J., 1989, “Non-Newtonian and Thermal Effects in Journal Bearings,” Tribol. Trans., 32, pp. 161–169.
Buark,  A. Gecim, 1990, “Non-Newtonian Effects of Multigrade Oils on Journal Bearing Performance,” Tribol. Trans., 33, pp. 384–394.
Sheau-Ming,  J., and Cheng-I,  W., 1994, “THD Analysis of Finite-Width Journal Bearings With Non-Newtonian Lubricants,” Wear, 171, pp. 41–49.
Batra,  A., and Dareing,  D. W., 1995, “Hydrodynamic Behavior of Graphite Powder Slurries in Journal Bearing,” Tribol. Trans., 38, pp. 161–167.
Raghunandana, K., and Majumdar, B. C., 1998, “Rotordynamics Coefficients and Stability of Journal Bearing Systems Using Non-Newtonian Lubricants,” Proceedings of the Fourth National Conference on Air Breathing Engines And Aerospace Propulsion, MA1–MA6.
Kirk, R. G., De Choudhury, P., and Gunter, E. J., 1974, “The Effect of Support Flexibility on the Stability of Rotors Mounted in Plain Cylindrical Journal Bearings,” IUTAM Symposium, Lyngby, Denmark, F. I. Niordson, ed., pp. 244–298.
Kirk, R. G., and Gunter, E. J., 1973, “Nonlinear Transient Analysis of Multi-Mass Flexible Rotors—Theory and Applications,” NASA CR-2300.
Kakoty,  S. K., and Majumdar,  B. C., 1999, “Effect of Fluid Inertia on Stability of Flexibly Supported Oil Journal Bearings: Linear Perturbation Analysis,” Tribol. Int., 32, pp. 217–228.

Figures

Grahic Jump Location
Rotor-bearing configuration
Grahic Jump Location
Pressure distribution of non-Newtonian lubricant for ε=0.4
Grahic Jump Location
Effect of support damping on stability of a journal bearing mounted on flexible support (K̄=10.0,n=1,m=0.1) for L/D=1.0
Grahic Jump Location
Effect of non-Newtonian lubricant on stability of a journal bearing mounted on flexible support (K̄=1.0,B̄=1.0,m=0.1) for L/D=1.0
Grahic Jump Location
Effect of mass ratio on stability of a journal bearing mounted on flexible support (K̄=0.1,B̄=0.1,n=1.0) for L/D=0.5

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