Elementary Three-Dimensional Interactive Rotor Blade Impact Analysis

[+] Author and Article Information
R. W. Cornell

Hamilton Standard Division of United Technologies Corp., Windsor Locks, Conn.

J. Eng. Power 98(4), 480-486 (Oct 01, 1976) (7 pages) doi:10.1115/1.3446222 History: Received August 04, 1975; Online July 14, 2010


A theoretical analysis is presented which defines the loading and response of a rotor fan blade due to soft or frangible impacts in terms of the three fundamental modes of vibration by representing the blade as a lumped, spring-mass system. The analysis includes the effects of centrifugal stiffening, blade twist, retention stiffness and orientation, damping, and blade motion and deflection on the impact force. The features, solution, program, and applications of this analysis are reviewed, and the results are compared with those from a number of blade and specimen tests and found to be in good agreement.

Copyright © 1976 by ASME
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