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126
Effect of L/D Ratio on the Performance of a Four-Lobe Pressure Dam Bearing
Abstract:
A four-lobe pressure dam bearing which is produced by cutting two pressure dams on the upper two lobes and two relief-tracks on the lower two lobes of an ordinary four-lobe bearing is found to be more stable than a conventional four-lobe bearing. In this paper a four-lobe pressure dam bearing supporting rigid and flexible rotors is analytically investigated to determine its performance when L/D ratio is varied in the range 0.75 to 1.5. The static and dynamic characteristics are studied at various L/D ratios. The results show that the stability of a four-lobe pressure dam bearing increases with decrease in L/D ratios both for rigid as well as flexible rotors.
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References:

[1] O. Pinkus, "Analysis and Characteristics of Three-Lobe Bearings", ASME Journal of Basic Engineering, vol. 81, pp. 19, 1959.
[2] J. W. Lund, and K. K. Thomson, "A Calculation Method and Data for the Dynamic Coefficients of Oil Lubricated Journal Bearings", Proceedings of the ASME Design and Engineering Conference, Minneapolis, pp. 1, 1978.
[3] M. Malik, Mahesh Chandra and R. Sinhasan, "Design Data for Offset- Halves Journal Bearings in Laminar and Turbulent Flow Regimes", ASLE Trans., pp. 133-140, 1982.
[4] J. C. Nicholas, L. E. Barrett, and M. E. Leader, "Experimental - Theoretical Comparison of Instability Onset Speeds for a Three Mass Rotor Supported by Step Journal Bearing", Trans. ASME, Journal of Mechanical Design, pp. 344-351, 1980.
[5] R. D. Flack, M. E. Leader, and E. J. Gunter, "An Experimental Investigation on the Response of a Flexible Rotor Mounted in Pressure Dam Bearings", Trans. ASME, Journal of Mechanical Design, pp. 842- 850, 1980.
[6] N. P. Mehta, A. Singh, and B. K. Gupta, "Dynamic Analysis of Finite Half-Elliptical Pressure Dam Bearings with Rotor Flexibility Effects", ASLE Trans., vol. 29, no. 1, pp. 61-66, 1986.
[7] N. P. Mehta, and A. Singh "Stability of Finite Orthogonally-Displaced Pressure Dam Bearings", ASME Journal of Tribology, vol. 109, no. 4, pp. 718-720, 1987.
[8] N. P. Mehta, and S. S. Rattan, "Performance of Three-Lobe Pressure Dam Bearings", Wear, pp. 181-185, 1993.
[9] N. P. Mehta, S. S. Rattan, and G. Bhushan, "Static and Dynamic Characteristics of Four-Lobe Pressure Dam Bearings", Tribology Letters, vol. 15, no. 4, pp. 415-420, 2003.
[10] J. W. Lund, "Self-excited stationary whirl orbits of a journal in sleeve bearings", PhD Thesis, Rensselaer Polytechnic Institute, N.Y., 1966.
[11] R. H. Badgley, and J. F. Booker, "Turborotor Instability: Effect of Initial Transients on Plane Motion", Trans. ASME, Journal of Lubrication Technology, pp. 625-633, 1969.
[12] Y. Hori, "A Theory of Oil Whip", Trans. ASME, Series E, pp.189, 1959.
[13] N. P. Mehta, A. Singh, and B. K. Gupta, "Stability of Finite Elliptical Pressure Dam Bearings with Rotor Flexibility Effects", ASLE Trans., vol.29, no. 4, pp. 548-557, 1986.
[14] S. S. Rattan, "Stability analysis of pressure dam bearings using finite element method", Ph.D. Thesis, Kurukshetra University, 1995.
[15] G. Bhushan, S. S. Rattan, and N. P. Mehta, "Hydrodynamic Lubrication Analysis of Four-Lobe Pressure Dam Bearings by Finite-Element Method", Proceedings 2nd International and 29th National Conference on Fluid Mechanics and Fluid Power, IIT Roorkee, pp. 338, 2002.
[16] E. J. Hahn, "The Excitability of Flexibility Rotors in Short Sleeve Bearings", Trans. ASME, Journal of Lubrication Technology, pp. 105, 1975.
[17] G. Bhushan, S. S. Rattan, and N. P. Mehta, "Stability Analysis of Four-Lobe Pressure Dam bearings", Tribology Letters, vol. 13, no. 1, pp. 1-7, 2002.
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