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RESEARCH PAPERS

Stability Analysis and Complex Dynamics of a Gear-Pair System Supported by a Squeeze Film Damper

[+] Author and Article Information
Chin-Shong Chen

Optima CAE, Inc., Novi, MI

S. Natsiavas

Department of Mechanical Engineering, Aristotle University, 54006 Thessaloniki, Greece

H. D. Nelson

Department of Engineering, Texas Christian University, Fort Worth, TX 76129

J. Vib. Acoust 119(1), 85-88 (Jan 01, 1997) (4 pages) doi:10.1115/1.2889691 History: Received February 01, 1994; Revised May 01, 1995; Online February 26, 2008

Abstract

The stability properties of periodic steady state response of a nonlinear geared rotordynamic system are investigated. The nonlinearity arises because one support of the system includes a cavitated squeeze film damper, while the excitation is caused by mass unbalance. The dynamical model and the procedure which leads to periodic steady state response of the system examined have been developed in an earlier paper. Here, the emphasis is placed on analyzing the stability characteristics of located periodic solutions. Also, within ranges of the excitation frequency where no stable periodic solutions are detected, the long time behavior of the system is investigated by direct integration of the equations of motion. It is shown that large order subharmonic, quasiperiodic and chaotic motions may coexist with unstable periodic response in these frequency ranges. Finally, attention is focused on practical consequences of these motions.

Copyright © 1997 by The American Society of Mechanical Engineers
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