RESEARCH PAPERS: Power Transmission and Gearing Papers

Use of the Generalized Transmission Error in the Equations of Motion of Gear Systems

[+] Author and Article Information
W. D. Mark

BBN Laboratories Inc., Cambridge, MA 02238

J. Mech., Trans., and Automation 109(2), 283-291 (Jun 01, 1987) (9 pages) doi:10.1115/1.3267452 History: Received August 14, 1986; Online November 19, 2009


The vibratory excitation arising from a gear pair is widely recognized to be a consequence of the nonuniform transmission of motion by the gear pair. In the preceding paper in this issue, it is shown that a three-component transmission error is required to describe the nonuniform transmission of motion by bevel gears for vibration excitation characterization purposes. The expression for the three-component transmission error derived in that paper is combined in the present paper with an analysis of the mesh forces and mesh elasticity to yield an equation of constraint involving the six degree-of-freedom unknown vibratory displacements of the gear shaft centerliners, the three unknown components of the generalized force transmitted by the mesh, and the geometric deviations of the tooth running surfaces from perfect involute surfaces which are assumed known. This matrix equation can be combined with the equations of motion of a gear system to predict the vibratory response of the system to the generalized transmission error excitation arising from meshing gear pairs within the system.

Copyright © 1987 by ASME
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