A Method for Thermal Analysis of Spiral Bevel Gears

[+] Author and Article Information
R. F. Handschuh

Vehicle Propulsion Directorate, U.S. Army Research Laboratory, Lewis Research Center, Cleveland, OH 44135

T. P. Kicher

Case Western Reserve University, Cleveland, OH 44106

J. Mech. Des 118(4), 580-585 (Dec 01, 1996) (6 pages) doi:10.1115/1.2826932 History: Received May 01, 1995; Revised May 01, 1996; Online December 11, 2007


A modelling method for analyzing the three-dimensional thermal behavior of spiral bevel gears has been developed. The model surfaces are generated through application of differential geometry to the manufacturing process for face-milled spiral bevel gears. Contact on the gear surface is found by combining tooth contact analysis with three-dimensional Hertzian theory. The tooth contact analysis provides the principle curvatures and orientations of the two surfaces. This information is then used directly in the Hertzian analysis to find the contact size and maximum pressure. Heat generation during meshing is determined as a function of the applied load, sliding velocity, and coefficient of friction. Each of these factors change as the point of contact changes during meshing. A nonlinear finite element program was used to conduct the heat transfer analysis. This program permitted the time- and position-varying boundary conditions, found in operation, to be applied to a one-tooth model. An example model and analytical results are presented.

Copyright © 1996 by The American Society of Mechanical Engineers
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