A Complete Solution for Thermal-Elastohydrodynamic Lubrication of Line Contacts Using Circular Non-Newtonian Fluid Model

[+] Author and Article Information
Hsing-Sen S. Hsiao, Bernard J. Hamrock

Department of Mechanical Engineering, The Ohio State University, Columbus, Ohio 43210

J. Tribol 114(3), 540-551 (Jul 01, 1992) (12 pages) doi:10.1115/1.2920916 History: Received March 21, 1991; Revised July 25, 1991; Online June 05, 2008


A complete solution is obtained for elastohydrodynamically lubricated conjunctions in line contacts considering the effects of temperature and the non-Newtonian characteristics of lubricants with limiting shear strength. The complete fast approach is used to solve the thermal Reynolds equation by using the complete circular non-Newtonian fluid model and considering both velocity and stress boundary conditions. The reason and the occasion to incorporate stress boundary conditions for the circular model are discussed. A conservative form of the energy equation is developed by using the finite control volume approach. Analytical solutions for solid surface temperatures that consider two-dimensional heat flow within the solids are used. A straightforward finite difference method, successive over-relaxation by lines, is employed to solve the energy equation. Results of thermal effects on film shape, pressure profile, streamlines, and friction coefficient are presented.

Copyright © 1992 by The American Society of Mechanical Engineers
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