RESEARCH PAPERS: Power Transmission and Gearing

The Analytical and Experimental Evaluation of Resonant Response in High-Speed, Lightweight, Highly Loaded Gearing

[+] Author and Article Information
R. J. Drago, F. W. Brown

Advanced Power Train Technology Department, Boeing Vertol Company, Philadelphia, Pa.

J. Mech. Des 103(2), 346-356 (Apr 01, 1981) (11 pages) doi:10.1115/1.3254914 History: Received February 01, 1980; Online November 17, 2009


The resonant response of high-speed, lightweight gearing is of serious concern to the transmission specialist. Such gearing typically has several natural frequencies within its operating range. The existence of a resonant response in a range of interest is of itself not indicative of a potential failure; however, if the vibrational energy associated with that made is sufficient to cause stresses beyond the fatigue endurance limit, the gear will fail. These failures are usually rapid and destructive. Two approaches to this problem are possible: The gear may be damped or it may be redesigned to move its natural frequencies out of the operating range. This paper describes the causes and effects of gear resonance, experimental and analytical methods for identifying resonant frequencies and mode shapes, and methods for use in the design and hardware stages to avoid the coincidence of exciting and natural frequencies.

Copyright © 1981 by ASME
Topics: Speed
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