Effects of a Single Bump or Dent in Time Dependent Thermal Line EHD Lubrication

[+] Author and Article Information
Farshid Sadeghi, Kyung-Hoon Kim

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Tribol 116(1), 9-20 (Jan 01, 1994) (12 pages) doi:10.1115/1.2927055 History: Received May 18, 1992; Revised July 16, 1993; Online June 05, 2008


A time-dependent thermal compressible elastohydrodynamic lubrication of line contact model has been developed to investigate the effects of a single bump or dent in heavily loaded rolling/sliding contacts. The results illustrate the transient behavior of the film thickness, pressure and temperature distributions as a bump or a dent travels through the contact. The multigrid multilevel technique was used to simultaneously solve the discretized time dependent Reynolds, elasticity and energy equations. The effects of various loads and speeds have been investigated. Results are presented for the nondimensional loads of W = 1.3 × 10−4 , 2.3 × 10−4 and nondimensional speeds ranging from U = 1 × 10−11 to U = 10−10 under pure rolling and rolling/sliding conditions.

Copyright © 1994 by The American Society of Mechanical Engineers
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