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RESEARCH PAPERS: Turbomachinery

Aeroelastic Characteristics of a Cascade of Mistuned Blades in Subsonic and Supersonic Flows

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

Structural Dynamics Section, NASA Lewis Research Center, Cleveland, Ohio

K. R. V. Kaza

Dept. of Mechanical Engineering, The University of Toledo, Toledo, Ohio

J. Vib., Acoust., Stress, and Reliab 105(4), 425-433 (Oct 01, 1983) (9 pages) doi:10.1115/1.3269124 History: Received June 23, 1981; Online November 23, 2009

Abstract

An investigation of the effects of mistuning on flutter and forced response of a cascade in subsonic and supersonic flows is presented. The aerodynamic and structural coupling between the bending and torsional motions and the aerodynamic coupling between the blades are included. It is shown that frequency mistuning always has a beneficial effect on flutter. Additionally, the results indicate that frequency mistuning may have either a beneficial or an adverse effect on forced response, depending on the engine order of the excitation and Mach number.

Copyright © 1983 by ASME
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