Development of Porous Squeeze Film Damper Bearings for Improving the Blade Loss Dynamics of Rotor-Support Systems

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

Jet Propulsion Department, Beijing University of Aeronautics and Astronautics, Beijing 100083, People’s Republic of China

J. Vib. Acoust 114(3), 347-353 (Jul 01, 1992) (7 pages) doi:10.1115/1.2930268 History: Received April 01, 1990; Online June 17, 2008


An efficient oil film damper known as porous squeeze film damper (PSFD) is developed based on conventional squeeze film damper (SFD) for more effective and reliable rotor vibration control and especially for improving the blade loss dynamics for rotor support system. The permeability of the outer race of PSFD could remarkably improve the squeeze film damping properties. The transient response of a simple rigid rotor and flexible Jeffcott’s rotor supported on PSFD and SFD subjected to sudden unbalance of blade loss are investigated. Time transient simulation show that PSFD could operate effectively under much greater unbalance as compared with SFD, especially under relative large impact loading of blade loss. Furthermore, the effective eccentricities of PSFD with small transmissibilities (T<1.0) extend to a range of ε<0.9, and optimum film stiffness and damping distribution within the whole film clearance could be achieved.

Copyright © 1992 by The American Society of Mechanical Engineers
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