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RESEARCH PAPERS

An Efficient Algorithm for Thermal Elastohydrodynamic Lubrication Under Rolling/Sliding Line Contacts

[+] Author and Article Information
Chao-Ho Hsu, Rong-Tsong Lee

Department of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424

J. Tribol 116(4), 762-769 (Oct 01, 1994) (8 pages) doi:10.1115/1.2927330 History: Received August 12, 1993; Revised February 08, 1994; Online June 05, 2008

Abstract

One of the most time-consuming routines in thermal EHL problem is the calculation of the surface temperature integral. Combining the multigrid technique and the Newton-Raphson method, a modified multilevel, multi-integration algorithm for this integral is developed that can reduce the computational complexity from O (n2 ) to O (n ln n) for the thermal EHL problem of rolling/sliding line contacts. The employed standard central difference approximation to the coupled Reynolds and energy equations can yield the maximum difference of mass flow flux within one percent. Effects of dimensionless load, dimensionless materials parameter, slip ratio, and thermal loading parameter on the minimum film thickness are investigated. Correlation formula of thermal reduction factor for the minimum film thickness is derived for a wide range of slip ratios, loads, thermal loading parameters, and materials parameters.

Copyright © 1994 by The American Society of Mechanical Engineers
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