Influence of Friction Dampers on Torsional Blade Flutter

[+] Author and Article Information
A. Sinha

The Pennsylvania State University, University Park, PA 16802

J. H. Griffin

Carnegie-Mellon University, Pittsburgh, PA 15213

R. E. Kielb

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH 44135

J. Eng. Gas Turbines Power 108(2), 313-318 (Apr 01, 1986) (6 pages) doi:10.1115/1.3239905 History: Received January 10, 1985; Online October 15, 2009


This paper deals with the stabilizing effects of dry friction on torsional blade flutter. A lumped parameter model with single degree of freedom per blade has been used to represent the rotor stage. The well-known cascade theories for incompressible and supersonic flows have been used to determine the allowable increase in fluid velocity relative to the blade. It has been found that the effectiveness of friction dampers in controlling flutter can be substantial.

Copyright © 1986 by ASME
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