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KSTLE international journal v.10 no.1/2, 2009년, pp.6 - 12  

The Effect of Oil Supply Conditions on the Dynamic Performance of a Hydrodynamic Journal Bearing

Son, Sang-Ik    (School of Mechanical, Aerospace & Systems Engineering, Korea Advanced Institute of Science and Technology   ); Kim, Kyung-Woong    (School of Mechanical, Aerospace & Systems Engineering, Korea Advanced Institute of Science and Technology  );
  • 초록

    In this study, the effect of oil supply conditions on the dynamic performance of a hydrodynamic journal bearing is analyzed numerically. Axial length, circumferential length and location of oil grooves are considered as oil supply conditions. The perturbation equations of the perturbed film contents are obtained by applying Elrod's universal equation implementing JFO film rupture / reformation boundary conditions to Lund's infinitesimal perturbation method. The dynamic coefficients of a hydrodynamic journal bearing are calculated by solving the perturbation equations, and the linear stability analysis is carried out by using those for a variety of oil supply conditions.


  • 주제어

    Hydrodynamic journal bearing .   oil supply condition .   cavitation .   linear stability.  

  • 참고문헌 (13)

    1. So, H., Shieh, J. A., The Cooling Effects of Supply Oil on Journal Bearings for Varying Inlet Conditions, Tribology International, Vol. 20, pp.79-89, 1987 
    2. Vijayaraghavan, D., Keith JR., T. G., Effect of Type and Location of Oil Groove on the Performance of Journal Bearings, Tribology Transactions, Vol. 35, pp. 98-106, 1992 
    3. Costa, L., Miranda, A. S., Fillon, M., Claro, J. C. P., An Analysis of the Influence of Oil Supply Conditions on the Thermohydrodynamic Performance of a Single-Groove Journal Bearing, Proc Instit Mech Eng Part J: J Eng Tribology, Vol. 217, pp. 133-144, 2003 
    4. Wang, J. K., Khonsari, M. M., Effects of Oil Inlet Pressure and Inlet Position of Axially Grooved Infinitely Long Journal Bearings. Part II: Nonlinear Instability Analysis, Tribology International, Vol. 41, pp. 132-140, 2008 
    5. Olsson, K., Cavitation in Dynamically Loaded Bearings, Transactions Chalmers Univ. Technology, Goteborg, 1965 
    6. Jeong, K. M., Kim, K. W., The Effects of Oil Supply Conditions on the Static Characteristics of Plain Journal Bearings, J. of the KSTLE, Vol. 6, No. 2, pp. 76-87, 1990 
    7. Wang, J. K., Khonsari, M. M., Effects of Oil Inlet Pressure and Inlet Position of Axially Grooved Infinitely Long Journal Bearings. Part I: Analytical Solutions and Static Performance, Tribology International, Vol. 41, pp. 119-131, 2008 
    8. Zhang, Y., Dynamic Properties of flexible Journal Bearings of Infinite Width Considering Oil Supply Condition and Pressure, Wear, Vol. 130, pp. 53-68, 1989 
    9. Elrod, H. G., A Cavitation Algorithm, ASME J. of Lubrication Technology, Vol. 103, pp. 350-354, 1981 
    10. Lund, J. W., Thomsen, K. K., Calculation Method and Data for the Dynamic Coefficients of Oil-Lubricated Journal Bearings, Proc. of the ASME, Minneapolis, pp. 1, 1978 
    11. Floberg, L., Jakobsson, B., The Finite Journal Bearing Considering Vaporization, Transactions Chalmers Univ. Technology, Goteborg, 1957 
    12. Ken, I., Mori, H., An Analysis of Lubricating Film Journal Bearing-Effect of oil Supply Condition on the Static Performance, JSLE, No. 4, 1984 
    13. Elrod, H. G., Adams, M. L., A Computer Program for Cavitation and Starvation Problems, Cavitation and Related Phenomena in Lubrication, Proceedings of the 1^{st} Leeds-Lyon Symposium on Tribology, Leeds Univ., pp. 37-41, 1974 

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