RESEARCH PAPERS: Design Automation Papers

Operating Characteristics of Three-Lobe Bearings

[+] Author and Article Information
R. D. Flack, P. E. Allaire

Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22901

J. Mech., Trans., and Automation 106(1), 61-69 (Mar 01, 1984) (9 pages) doi:10.1115/1.3258563 History: Revised June 10, 1983; Online November 19, 2009


Three-lobe bearings were studied for both rigid and flexible rotors from three aspects: instability threshold, load carrying capacity, and unbalance response. Offset factor, preload factor, and load orientation were parametrically varied for the bearings and their influences on the foregoing characteristics were studied both theoretically and experimentally. Results indicate that, in general, all three operating characteristics cannot be optimized for the same bearing parameters. For example, the lowest unbalance response was found for small bearing preload factors, while the highest instability thresholds were found for large preload factors. As a result, when choosing a bearing for a particular application, the designer must consider which operating characteristic is most important and choose the bearing accordingly.

Copyright © 1984 by ASME
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