Investigation of the Steady-State Response of a Dual-Rotor System With Intershaft Squeeze Film Damper

[+] Author and Article Information
Qihan Li, Litang Yan

Jet Propulsion Department, Beijing Institute of Aeronautics & Astronautics, People’s Republic of China

J. F. Hamilton

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Eng. Gas Turbines Power 108(4), 605-612 (Oct 01, 1986) (8 pages) doi:10.1115/1.3239954 History: Received May 13, 1985; Online October 15, 2009


This paper presents an analysis of the steady-state unbalance response of a dual-rotor gas turbine engine with a flexible intershaft squeeze film damper using a simplified transfer matrix method. The simplified transfer matrix method is convenient for the evaluation of the critical speed and response of the rotor system with various supports, shaft coupling, intershaft bearing, etc. The steady-state unbalance response of the rotor system is calculated for different shaft rotation speeds. The damping effects of an intershaft squeeze film damper with different radial clearances under various levels of rotor unbalance are investigated.

Copyright © 1986 by ASME
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