THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Liangliang Li

,

Yunzhu Li

,

Yonghui Xie

NUMERICAL INVESTIGATION ON DYNAMIC CHARACTERISTICS OF HYDRODYNAMIC BEARING

ABSTRACT
In this paper, both the steady-state and transient-state of the films flow are investigated by CFD. The journal bearing dynamic characteristics such as the load capacity, damping and stiffness coefficients for several eccentricity, and length over diameter ratio (L/D) are obtained and compared with each other in different working conditions. Furthermore, the variation of various research parameters with eccentricity and L/D are also illustrated in detail.
KEYWORDS
hydrodynamic bearing, load capacity, eccentricity, L/D ratios, damping coefficient, stiffness coefficient
PAPER SUBMITTED: 2017-03-10
PAPER REVISED: 2017-05-01
PAPER ACCEPTED: 2017-05-26
PUBLISHED ONLINE: 2017-12-02
DOI REFERENCE: https://doi.org/10.2298/TSCI17S1201L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Supplement 1, PAGES [S201 - S208]
REFERENCES
  1. Kirk, R. G., et al., PC-Based Analysis of Turbomachinery Vibration, Shock and Vibration Digest, 31 (1999), 6, pp. 449-454
  2. Guo, Z., Kirk, R. G., Analysis of Externally Pressurized Fluid-Film Bearings for High-Speed Rotating Machinery, Proceedings, ISCORMA, Lake Tahor, Cal., USA, 2001, Vol. 1, pp. 20-24
  3. Lund, J. W., The Stability of an Elastic Rotor in Journal Bearings with Flexible, Damped Supports, Journal of Applied Mechnics, 4 (1965), 32, pp. 911-920
  4. Lund, J. W., Thomsen, K. K., A Calculation Method and Data for the Dynamic Coefficients of Oil-Lubricated Journal Bearings, Topics in Fluid Film Bearing and Rotor Bearing System Design and Optimization, ASME, New York, USA, 1978, pp. 1-28
  5. Lund, J. W., Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings, ASME J. Tribol, 109 (1987), 1, pp. 37-41
  6. Sivak, B., Sivak, M., The Numerical Solution of the Reynolds Equation by a Modified Ritz Method, Wear, 72 (1981), 3, pp. 371-376
  7. Hattori, H., Dynamic Analysis of a Rotor-Journal Bearing System with Large Dynamic Loads: Stiffness and Damping Coefficient Variations in Bearing Oil Films, Jsme International Journal, 36 (2008), 2, pp. 251-257
  8. Qiu, Z. L., Tieu, A. K., The Effect of Perturbation Amplitudes on Eight Force Coefficients of Journal Bearings, Tribology Transactions, 39 (1996), 2, pp. 469-475
  9. Sawicki, J. T., Rao, T. A., Nonlinear Model for Prediction of Dynamic Coefficients in a Hydrodynamic Journal Bearing, International Journal of Rotating Machinery, 10 (2004), 6, pp. 507-513
  10. Gertzos, K. P., et al., CFD Analysis of Journal Bearing Hydrodynamic Lubrication by Bingham Lubricant, Tribology International, 41 (2008), 12, pp. 1190-1204
  11. Guo, Z., et al., Application of CFD Analysis for Rotating Machinery: Part 1-Hydrodynamic, Hydrostatic Bearings and Squeeze Film Damper, Proceedings, ASME Turbo Expo 2003, Collocated with the 2003 International Joint Power Generation Conference. American Society of Mechanical Engineers, Atlanta, Geo., USA, pp. 651-659, 2003
  12. Lijesh, K.P., et al., Stiffness and Damping Coefficients for Rubber Mounted Hybrid Bearing, Lubrication Science, 26 (2014), 5, pp. 301-314
  13. Wood, K. L., et al., A Nonlinear Dynamic Model with Confidence Bounds for Hydrodynamic Bearings, Journal of Tribology, 120 (1998), 3, pp. 595-604
  14. Muller-Karger, C. M., et al., Derivation of Hydrodynamic Bearing Coefficients Using the Minimum Square Method, Journal of Tribology, 119 (1997), 4, pp. 802-807
  15. Makino, T., Mori, I. I., Entry Flow and Pressure Jump in Submerged Multi-Pad Bearings and Grooved Bearings, Journal of Tribology, 114 (1992), 2, pp. 370-378
  16. Keogh, P. S., On the Dynamic Thermal State in a Hydrodynamic Bearing with a Whirling Journal Using CFD Techniques, Journal of Tribology, 118 (1996), 2, pp. 356-363
  17. Pinkus, O., et al., Theory of Hydrodynamic Lubrication, McGraw-Hill, New York, USA, 1961
  18. Nicholas, J. C., et al., Stiffness and Damping Coefficients for the Five-Pad Tilting-Pad Bearing, ASLE Transactions, 22 (1979), 2, pp. 113-124
  19. Ghosh, M. K., et al., Steady-State and Dynamic Behaviour of Multi-Rrecess Hybrid Oil Journal Bearings, Journal of Mechanical Engineering Science, 21 (1979), 5, pp. 345-351
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Numerical investigation on dynamic characteristics of hydrodynamic bearing

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