1. A review of work on self-excited vibrations can be found in the paperJournal Bearing Instability: a Review byB. L. Newkirk, published in the Proceedings of the Conference on Lubrication and Wear of the Inst. Mech. Eng., London, 1957. More recently the problem has been studied byE. Frederiksen inNotes on Oil Whirl of Flexible Rotors Supported by Cylindrical Journal Bearings, Ingenioren (International Ed.),1 (1957), 29-36
2. byJ. H. Halton inElliptical Whirl of Flooded Journal Bearings, Proc. Cambridge Phil. Soc.,54 (1958), 119-127
3. byFinn Ørbeck inTheory of Oil Whip for Vertical Rotors Supported by Plain Journal Bearings, Trans. A. S. M. E.,80 (1958), 1497-1502
4. and byYukio Hori inA Theory of Oil Whip, J. Appl. Mech.,26 E (1959) 189-198.A. C. Hagg andG. O. Sankey have studied the problem of forced vibrations inSome Dynamic Properties of Oil Film Journal Bearings with Reference to the Unbalance Vibration of Rotors, J. Appl. Mech.,23 (1956) 302-306.
5. For instance, self-excited oscillations may be avoided when bearings of proper geometry are introduced. See the review paper byB. L. Newkirk quoted in footnote (1) and earlier papers by the same author.