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TECHNICAL NOTES

Stability Margin of Hybrid Journal Bearing: Influence of Thermal and Elastic Effects

[+] Author and Article Information
Vijay Kumar

Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala-147004, India

Satish C. Sharma, S. C. Jain

Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee-247667, India

J. Tribol 126(3), 630-634 (Jun 28, 2004) (5 pages) doi:10.1115/1.1759343 History: Received August 06, 2003; Revised February 03, 2004; Online June 28, 2004
Copyright © 2004 by ASME
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References

Rowe,  W. B., Xu,  S. X., Chong,  F. S., and Weston,  W., 1982, “Hybrid Journal Bearings With Particular Reference to Hole-Entry Configuration,” Tribol. Int., 15(6), pp. 339–348.
Rowe,  W. B., 1989, “Advances in Hydrostatic and Hybrid Bearing Technology,” Proc. Inst. Mech. Eng., IMechE Conf., 203, pp. 225–242.
Sharma,  S. C., Sinhasan,  R., and Jain,  S. C., 1990, “Elastohydrostatic Analysis of Orifice Compensated Multiple Hole-entry Hybrid Journal Bearings,” Int. J. Mach. Tools Manuf., 30(1), pp. 111–118.
Sharma,  S. C., Kumar,  V., Jain,  S. C., Nagaraju,  T., and Prasad,  G., 2002, “Thermohydrostatic Analysis of Slot-Entry Hybrid Journal Bearing System,” Tribol. Int., 35(9), p. 561.
Sharma, S. C., Jain, S. C., and Reddy, N. M. M., 2000, “A Study of Non-Recessed Hybrid Flexible Journal Bearing with Different Restrictors,” Presented in ASME/STLE Tribology Conference in Seattle, Washington, October 1–4.
Guha,  S. K., Ghosh,  M. K., and Majumdar,  B. C., 1989, “Rotordynamic Coefficients of Multirecess Hybrid Journal Bearing Part II: Fluid Inertia Effect,” Wear, 129, p. 261.
Andres,  L. A. S., 1990, “Turbulent Hybrid Bearings With Inertia Effects,” ASME J. Tribol., 112, p. 699.
Andres,  L. A. S., 1991, “Effects of Fluid Compressibility on the Dynamic Response of Hydrostatic Journal Bearings,” Wear, 146, p. 269.
Ferron,  J., Frene,  J., and Boncompain,  R., 1983, “A Study of Thermohydrodynamic Performance of a Plain Journal Bearing—Comparison Between Theory and Experiments,” ASME J. Lubr. Technol., 105, pp. 422–429.
Mitsui,  J., 1987, “A Study of Thermohydrodynamic Lubrication in a Circular Journal Bearing,” Tribol. Int., 20(6), pp. 331–340.
Sinhasan,  R., and Chandrawat,  H. N., 1990, “Analysis of Two-Axial Groove Journal Bearing Including Thermoelasto-Hydrodynamic Effects,” Tribol. Int., 22(5), pp. 347–353.
Vijayaraghavan,  D., and Brew,  D. E., 1998, “Effect of Rate of Viscosity Variation on the Performance of Journal Bearings,” ASME J. Tribol., 120, pp. 1–7.
Sharma,  S. C., Kumar,  V., Jain,  S. C., and Nagaraju,  T., 2003, “Study of Hole-Entry Hybrid Journal Bearing System Considering Combined Influence of Thermal and Elastic Effects,” Tribol. Int., 36(12), p. 903.
Dowson,  D., Hudson,  J., Hunter,  B., and March,  C., 1966, “An Experimental Investigation of the Thermal Equilibrium of Steadily Loaded Journal Bearings,” Proc. Inst. Mech. Eng., IMechE Conf., 181, Part 3B, p. 70.

Figures

Grahic Jump Location
Hole-entry journal bearing configuration (a) symmetric, (b) asymmetric, and (c) geometric details, coordinate system and thermoelastic deformation
Grahic Jump Location
Minimum fluid film thickness: symmetric bearing configuration
Grahic Jump Location
Minimum fluid film thickness: asymmetric bearing configuration
Grahic Jump Location
Threshold speed: symmetric bearing configuration
Grahic Jump Location
Threshold speed: asymmetric bearing configuration

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