RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

Dynamic Behavior of Geared Rotors

[+] Author and Article Information
T. N. Shiau

Institute of Mechanical Engineering, National Chung Cheng University, Chia-Yi, 621, Taiwan

J. S. Rao

Indian Institute of Technology, New Delhi, India

J. R. Chang, S.-T. Choi

National Cheng Kung University, Tainan, Taiwan

J. Eng. Gas Turbines Power 121(3), 494-503 (Jul 01, 1999) (10 pages) doi:10.1115/1.2818500 History: Received March 07, 1997; Online December 03, 2007


This paper is concerned with the dynamic behavior of geared rotor systems supported by squeeze film dampers, wherein coupled bending torsion vibrations occur. Considering the imbalance forces and gravity, it is shown that geared rotors exhibit chaotic behavior due to nonlinearity of damper forces. The route to chaos in such systems is established. In geared rotor systems, it is shown that torsional excitation can induce lateral vibrations. It is shown that squeeze film dampers can suppress large amplitudes of whirl arising out of torsional excitation.

Copyright © 1999 by The American Society of Mechanical Engineers
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