Experimental Evaluation of Fluid-Film Bearings Using Electro-Magnetic Shaft Loading and Evidence of Localized Thermal Distortion

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Experimental Evaluation of Fluid-Film Bearings Using Electro-Magnetic Shaft Loading and Evidence of Localized Thermal Distortion

Swanson, E.E., Kirk, R.G.

Proc. 5th Int'l Conf. on Vibrations in Rotating Mach., IMechE, 1992, pp. 359-363.

ABSTRACT
During the preliminary operational verification of a new test rig, a possible source of some of the discrepancy between analytical and experimental results for fluid film bearings, which has not been considered at great length in the literature, was noted. This mechanism is the localized thermal deformation of the bearing bush. To qualitatively demonstrate that such a mechanism may change the static shaft locus for a bearing, results from the VPI & SU test rig and a published work are presented.