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RESEARCH PAPERS

An Analysis of the Steady State and Dynamic Characteristics of a Spherical Hydrodynamic Journal Bearing

[+] Author and Article Information
P. S. Leung, I. A. Craighead

Department of Mechanical Engineering, Newcastle upon Tyne Polytechnic, Newcastle upon Tyne, England

T. S. Wilkinson

NEI Parsons Ltd., Newcastle upon Tyne, England

J. Tribol 111(3), 459-467 (Jul 01, 1989) (9 pages) doi:10.1115/1.3261947 History: Received January 18, 1988; Online October 29, 2009

Abstract

With recent developments in N. C. manufacturing processes it is relatively straightforward to produce a journal bearing with spherical surfaces. Such a bearing offers two main advantages over a conventional bearing: it can tolerate much larger misalignment and it can resist axial forces. In this paper, the steady state performance of a spherical journal bearing is studied by using a finite bearing theory. The dynamic characteristics of the bearing are represented by eight displacement and velocity force coefficients and the boundary of bearing stability is determined. The effect of superlaminar flow upon the bearing performance is also studied, and typical bearing design charts are provided. In comparison, the behavior of the spherical journal bearing is found to be similar to that of an equivalent cylindrical bearing.

Copyright © 1989 by ASME
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