Abstract
The existing literature contains a number of disparities in assessing the effect of inlet oil temperature on the instability threshold speed in hydrodynamic journal bearings. Specifically, some papers have presented evidence that lowering the inlet oil temperature tends to have a stabilizing effect, whereas others have shown the opposite. No clear explanation has been offered for this phenomenon. This paper presents the results of a series of experiments that explain the nature of these disparities and sheds light on the effect of the inlet oil temperature on the instability threshold in hydrodynamic journal bearings.
Issue Section:
Research Papers
1.
Newkirk
, B. L.
, and Taylor
, H. D.
, 1925, “Shaft Whipping Due to Oil Action in Journal Bearing
,” Gen. Electr. Rev.
0095-9480, 28
, pp. 559
–568
.2.
Maki
, E. R.
, and Ezzat
, H. A.
, 1980, “Thermally Induced Whirl of a Rigid Rotor on Hydrodynamic Journal Bearing
,” ASME J. Lubr. Technol.
0022-2305, 102
, pp. 8
–14
.3.
Newkirk
, B. L.
, and Lewis
, J. F.
, 1956, “Oil Film Whirl—An Investigation of Disturbances Due to Oil Films in Journal Bearings
,” Trans. ASME
0097-6822, 78
, pp. 21
–27
.4.
Pinkus
, O.
, 1953, “Note on Oil Whip
,” ASME J. Appl. Mech.
0021-8936, 20
, pp. 450
–451
.5.
Pinkus
, O.
, 1956, “Experimental Investigation of Resonant Whip
,” Trans. ASME
0097-6822, 78
, pp. 975
–983
.6.
Newkirk
, B. L.
, 1956, “Varieties of Shaft Disturbances Due to Fluid Films in Journal Bearings
,” Trans. ASME
0097-6822, 78
, pp. 985
–988
.7.
Lund
, J. W.
, 1965, “The Stability of an Elastic Rotor in Journal Bearings With Flexible, Damped Supports
,” ASME J. Appl. Mech.
0021-8936, 32
, pp. 911
–920
.8.
Yu
, L.
, and Liu
, H.
, 1996, Rotor-Bearing System Dynamics
, Theory of Lubrication and Bearing Institute
, Xi’an Jiaotong University, Xi’an, China
.9.
Wang
, J. K.
, 1997, “Research on the Performance of the Bearing-Rotor System of Turbosupercharger
,” M.S. thesis, Theory of Lubrication and Bearing Institute, Xi’an Jiaotong University, Xi’an, China.10.
Chauvin
, D.
, 2003, “An Experimental Investigation of Whirl Instability Including Effects of Lubricant Temperature in Plain Circular Journal Bearings
,” M.S. thesis, Department of Mechanical Engineering, Louisiana State University.11.
Wang
, J. K.
, and Khonsari
, M. M.
, 2006, “On the Hysteresis Phenomenon Associated With Instability of Rotor-Bearing Systems
,” ASME J. Tribol.
0742-4787, 128
, pp. 188
–196
.12.
Hori
, Y.
, 1959, “A Theory of Oil Whip
,” ASME J. Appl. Mech.
0021-8936, 26
, pp. 189
–198
.13.
Hori
, Y.
, 1988, “Anti-Earthquake Considerations in Rotordynamics
,” Proceedings of the ImechE 4th Intl. Conf. on Vibration in Rotating Machinery
, Edinburgh
, September, Heriot-Watt University
, Edinburgh, Scotland
, Paper No. C318/88, pp. 1
–8
.14.
Guo
, J. S.
, 1995, “Characteristics of the Nonlinear Hysteresis Loop for Rotor-Bearing Instability
,” Dissertation, Department of Mechanical and Aerospace Engineering, Case Western Reserve University
.15.
Adams
, M. L.
, and Guo
, J. S.
, 1996, “Simulations and Experiments of the Non-linear Hysteresis Loop for Rotor-Bearing Instability
,” IMechE Conference Transactions 1996-6
, Sixth International Conference on Vibration in Rotating Machinery
, September, Paper No. C500/001/96, pp. 309
–319
.16.
Horattas
, G. A.
, 1996, “Experimental Investigation of Dynamic Nonlinearities in Rotating Machinery
,” Dissertation, Department of Mechanical and Aerospace Engineering, Case Western Reserve University
.17.
Horattas
, G. A.
, Adams
, M. L.
, et al., 1997, “Experimental Investigation of Dynamic Nonlinearities in Rotating Machinery
,” Proceedings of the ASME Design Engineering Technical Conference
, Sept. 14-17, Sacramento, ASME, New York
, pp. 1
–12
.18.
Muszynska
, A.
, 1998, “Transition to Fluid-Induced Limit Cycle Self-Excited Vibrations of a Rotor and Instability Threshold ‘Hysteresis’
,” Proceedings of ISROMAC-7, The 7th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery
, February, Honolulu
, Bird Rock Publishing House
, Minden, Nevada
, pp. 775
–784
.Copyright © 2006
by American Society of Mechanical Engineers
You do not currently have access to this content.
