Effect of Involute Contact Ratio on Spur Gear Dynamics

[+] Author and Article Information
A. Kahraman, G. W. Blankenship

General Motors Corporation Advanced Powertrain Group, 37350 Ecorse Rd., Romulus, MI 48174

J. Mech. Des 121(1), 112-118 (Mar 01, 1999) (7 pages) doi:10.1115/1.2829411 History: Received March 01, 1998; Revised December 01, 1998; Online December 11, 2007


The influence of involute contact ratio on the torsional vibration behavior of a spur gear pair is investigated experimentally by measuring the dynamic transmission error of several gear pairs using a specially designed gear test rig. Measured forced response curves are presented, and harmonic amplitudes of dynamic transmission error are compared above and below gear mesh resonances for both unmodified and modified gears having various involute contact ratio values. The influence of involute contact ratio on dynamic transmission error is quantified and a set of generalized, experimentally validated design guidelines for the proper selection of involute contact ratio to achieve quite gear systems is presented. A simplified analytical model is also proposed which accurately describes the effects of involute contact ratio on dynamic transmission error.

Copyright © 1999 by The American Society of Mechanical Engineers
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