Mixed Lubrication of Coupled Journal-Thrust Bearing Systems
Yansong Wang,; Q. Jane Wang$^1$ and Chih Lin

doi:10.3970/cmes.2002.003.517
Source CMES: Computer Modeling in Engineering & Sciences, Vol. 3, No. 4, pp. 517-530, 2002
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Keywords Mixed lubrication, conformal mapping, coupled bearing system
Abstract Many mechanisms, such as computer hard drives, gear trains, and machine tool spindle systems, operate under both axial and radial loads, which should be respectively supported by a thrust and a journal bearing. By utilizing the end face of the shaft of a journal bearing as a thrust bearing, a coupled journal-thrust bearing system can be formed. This paper presents a mixed lubrication model developed to investigate the lubrication of this coupled bearing system. A conformal-mapping method is used in the model formulation to facilitate a universal flow description. The performance of typical coupled bearing systems is numerically investigated.
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