Epicyclic Gear Vibrations

[+] Author and Article Information
M. Botman

Pratt and Whitney Aircraft of Canada Ltd., Longueuil, Quebec, Canada

J. Eng. Ind 98(3), 811-815 (Aug 01, 1976) (5 pages) doi:10.1115/1.3439034 History: Received May 22, 1975; Online July 15, 2010


The natural frequenices of in-plane vibration of a single planetary gear stage are analyzed. The gear tooth stiffnesses are approximated as linear springs. The effect of planet pin stiffness on the natural frequencies is evaluated. Rotation of the carrier gives rise to a system with periodic coefficients which is solved by means of Floquet’s theory. The rotation of the carrier appears to suppress the nonaxisymmetric modes which are present in the system with nonrotating carrier.

Copyright © 1976 by ASME
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