Due to the renewed interest in the effect of misalignment on the dynamic characteristics of journal bearings, this paper presents a study of the effect of misalignment on the dynamic characteristics of journal bearings. A 2D finite difference program is developed and used for this study. The results show that there are a total of 16 stiffness and 16 damping coefficients considering horizontal and vertical displacements and rotations. The variation of these coefficients with journal tilting (i.e., angular misalignment) is illustrated. It is shown that misalignment can have a significant effect on the bearings’ dynamic characteristics.
Issue Section:
Gas Turbines: Structures and Dynamics
1.
Yu
, H.
, and Adams
, M. L.
, 1989, “The Linear Model for Rotor-Dynamic Properties of Journal Bearings and Seals With Combined Radial and Misalignment Motions
,” J. Sound Vib.
0022-460X, 131
(3
), pp. 367
–378
.2.
El-Shafei
, A.
, Tawfick
, S. H.
, Raafat
, M. S.
, and Aziz
, G. M.
, 2007 “Some Experiments on Oil Whirl and Oil Whip
,” ASME J. Eng. Gas Turbines Power
0742-4795, 129
(1
), pp. 144
–153
.3.
San Andres
, L.
, 1993, “Effect of Shaft Misalignment on the Dynamic Force Response of Annular Pressure Seals
,” Tribol. Trans.
1040-2004, 36
(2
), pp. 173
–182
.4.
Someya
, T.
, 1989, Journal-Bearing Databook
, Springer-Verlag
, Berlin
.5.
Szeri
, A. Z.
, 1998, Fluid Film Lubrication, Theory and Design
, Cambridge University Press
, Cambridge
.6.
Adams
, M. L.
, 2001, Rotating Machinery Vibration
, Dekker
, New York
.Copyright © 2008
by American Society of Mechanical Engineers
You do not currently have access to this content.
