RESEARCH PAPERS: Vibration and Sound

Torsional Vibrations and Dynamic Loads in a Basic Planetary Gear System

[+] Author and Article Information
R. August

Sverdrup Technology, Cleveland, Ohio 44130

R. Kasuba

Mechanical Engineering Dept., Cleveland State University, Cleveland, Ohio 44115

J. Vib., Acoust., Stress, and Reliab 108(3), 348-353 (Jul 01, 1986) (6 pages) doi:10.1115/1.3269349 History: Received January 04, 1986; Online November 23, 2009


An interative method has been developed for analyzing dynamic loads in a light weight basic planetary gear system. The effects of fixed, semi-floating, and fully-floating sun gear conditions have been emphasized. The load dependent variable gear mesh stiffnesses were incorporated into a practical torsional dynamic model of a planetary gear system. The dynamic model consists of input and output units, shafts, and a planetary train. In this model, the sun gear has three degrees of freedom; two transverse and one rotational. The planets, ring gear, and the input and output units have one degree of freedom, (rotation) thus giving a total of nine degrees of freedoms for the basic system. The ring gear has a continuous radial support. The results indicate that the fixed sun gear arrangement with accurate or errorless gearing offers in general better performance than the floating sun gear system.

Copyright © 1986 by ASME
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