Journal
TRIBOLOGY INTERNATIONAL
Volume 37, Issue 10, Pages 841-848Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2004.05.007
Keywords
shaft deformation; misalignment; journal bearing; lubrication analysis
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Hydrodynamic lubrication characteristics of a journal bearing, taking in to consideration the misalignment caused by shaft deformation, are analyzed. Film thickness expression of the misaligned journal bearing is inferred. Film pressure, load-carrying capacity, attitude angle, end leakage flow-rate, frictional coefficient, and misalignment moment of a journal bearing are calculated for different: values of misalignment degree and eccentricity ratio. The results show that there are obvious changes in film pressure distribution, the highest film pressure, film thickness distribution, the least film thickness, and the misalignment moment when misalignment takes place. Therefore, it is necessary to consider misalignment caused by shaft deformation when analyzing the lubrication of journal bearing. (C) 2004 Elsevier Ltd. All rights reserved.
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