Vibration Localization in Rotating Shafts, Part 2: Experiment

[+] Author and Article Information
A. Galip Ulsoy, Christophe Pierre, Suhyun Choi

Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109-2125

J. Vib. Acoust 120(1), 149-155 (Jan 01, 1998) (7 pages) doi:10.1115/1.2893798 History: Received May 01, 1995; Revised May 01, 1996; Online February 26, 2008


This paper presents an experimental study of vibration localization in single-span, flexible, rotating shafts. It was shown in a companion paper (Part I) that a noncircular cross-section of the rotating shaft, leading to dissimilar lateral moments of inertia, can introduce disorder. Internal coupling between the principal directions of vibration is provided by the rotational speed through the gyroscopic moments. It is experimentally demonstrated here that directional vibration localization can occur for appropriate combinations of disorder and coupling. The steady state response, due to mass unbalance, of a simply supported rotating shaft is considered. It is shown that disorder and gyroscopic coupling lead to directional vibration localization; i.e., larger vibration amplitudes in one of the two orthogonal principal directions of the shaft cross section.

Copyright © 1998 by The American Society of Mechanical Engineers
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