Dynamic Behavior of an Inherently Compensated Air Squeeze Film Damper

[+] Author and Article Information
R. E. Cunningham

NASA Lewis Research Center, Cleveland, Ohio

J. Eng. Ind 97(4), 1399-1404 (Nov 01, 1975) (6 pages) doi:10.1115/1.3438797 History: Received May 27, 1975; Online July 15, 2010


Experimental values of damping and stiffness were determined for an externally pressurized, inherently compensated, compressible squeeze-film damper up to excitation frequencies of 36,000 cycles/min. Experimental values of damping were higher than predicted by a small pressure perturbation theory at low squeeze numbers and less than predicted at high squeeze numbers. Experimental values of air film stiffness were less than the theory predicted at low squeeze numbers and much greater at higher squeeze numbers.

Copyright © 1975 by ASME
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