유체 윤활 저널 베어링의 소음 예측

Noise Estimation of Oil Lubricated Journal Bearings

  • 노병후 (한국과학기술원 기계공학과) ;
  • 김경웅 (한국과학기술원 기계공학과)
  • 발행 : 2003.07.01


Noise estimating procedures of oil lubricated journal bearings are presented. Nonlinear analysis of rotor-bearing system including unbalance mass of the rotor is performed in order to obtain acoustical properties of the bearing. Acoustical properties of the bearing are investigated through frequency analysis of the pressure fluctuation of the fluid film calculated from the nonlinear analysis. Noise estimating procedures presented in this paper could aid in the evaluation and understanding of acoustical properties of oil lubricated journal bearings.


  1. Choy, F. K., Braun, M. J. and Hu, Y., 1992, 'Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearings,' ASME J of Tribology, pp. 448-454
  2. Diangui, H., 2000, 'Experiment on the Characteristics of Torsional Vibration of Rotor-to-Stator Rub in Trubo-machninery,' Tribology International, Vol. 33, No. 2, pp. 75-79
  3. Rho, B. H. and Kim, K. W., 2002, 'A Study on Nonlinear Frequency Response Analysis of Hydrodynamic Journal Bearings with External Disturbances,' STLE Tribology Transactions, Vol. 45, No. 1, pp. 117-121
  4. Yoon, D. J., Kwon, O. Y., Jung, M. H. and Kim, K. W., 1995, 'Early Detection of Damages in Journal Bearings by AE Monitoring,' J of Acoustic Emission, Vol. 13, No. 1, pp. 1-10
  5. Miettinen, J. and Anderson, P., 2000, 'Acoustic Emission of Rolling Bearings Lubricated with Contaminated Grease,' Tribology International, Vol. 33, No. 11, pp. 777-787
  6. Elrod, H. G., 1981, 'A Cavitation Algorithm,' ASME J of Lubrication Technology, Vol. 103, No. 3, pp. 350-354
  7. Vijayaghavan, D. and Keith, T. G., 1989, 'Development and Evaluation of a Cavitation Algorithm,' STLE Tribology Transactions, Vol. 32, No. 2, pp. 225-233
  8. Gross, W. A., 1980, 'Fluid Film Lubrication,' John Wiley & Sons
  9. Kinsler, L. E. and Frey, A. R., 1982, 'Fundamentals of Acoustics,' John Wiley & Sons