Effect of Load Orientation on the Stability of a Three-Lobe Bearing Supporting Rigid and Flexible Rotors
Authors: G. Bhushan
Multilobe bearings are found to be more stable than circular bearings. A three lobe bearing also possesses good stability characteristics. Sometimes the line of action of the load does not pass through the axis of a bearing and is shifted on either side by a few degrees. Load orientation is one of the factors that affect the stability of a three lobe bearing. The effect of load orientation on the stability of a three-lobe has been discussed in this paper. The results show that stability of a three-lobe bearing supporting either rigid or flexible rotor is increased for the positive values of load orientation i.e. when the load line is shifted in the opposite direction of rotation.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1056062Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1239
 O. O. Pinkus, "Analysis and Characteristics of Three-Lobe Bearings," ASME Journal of Basic Engineering, 1959, 81, p. 19.
 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, 1978 p. 1.
 M. Malik, Mahesh Chandra and R: Sinhasan, "Design Data for Offset-Halves Journal Bearings in Laminar and Turbulent Flow Regimes," ASME Trans., Jan. 1982, pp. 133-140.
 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, 1980, pp 344-351.
 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, 1980, pp. 842-850.
 G. Bhushan, S.S. Rattan, and N. P. Mehta, "Effect of load orientation on the performance of a four-lobe bearing," MR International Journal of Engineering and Technology, vol. 1, no. 2, 2009, pp 58-62
 G. Bhushan, S.S. Rattan, and N. P. Mehta, "Effect of L/D ratio on the performance of a four-lobe bearing," Proceedings of All India Seminar on Emerging trends in Mechanical Engineering, NIT Kurukshetra, 2005.
 G. Bhushan, S.S. Rattan, and N. P. Mehta, "Effect of turbulence, ellipticity ratio & L/D ratio on the performance of four-lobe bearings with rigid and flexible rotors.," Journal of the Institution of Engineers (India), vol. 83, 2002, pp. 57-61.
 E. J. Hahn, "The excitability of Flexibility Rotors in Short Sleeve Bearings," Trans. ASME, Journal of Lubrication Technology, 1975, p. 105.