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RESEARCH PAPERS

Fast Numerical Calculations of EHD Sliding Traction Forces; Application to Rolling Bearings

[+] Author and Article Information
L. Houpert

SKF Engineering & Research Centre B.V., Nieuwegein, The Netherlands

J. Tribol 107(2), 234-239 (Apr 01, 1985) (6 pages) doi:10.1115/1.3261030 History: Received February 22, 1984; Online October 29, 2009

Abstract

Based on analytical calculations assuming isothermal elastohydrodynamic (EHD) lubrication conditions, and on curve-fitting of a thermal correction factor, a new formula is proposed to calculate the sliding traction force developed in a concentrated contact, assuming a nonlinear, viscoelastic lubricant and undirectional sliding. When sliding occurs in the rolling and transverse directions (bidimensional sliding), a simplified numerical method is outlined by which the components of the local shear stress are quickly calculated. The latter method is applied to the calculation of the shear stress and temperature distribution in the ball-raceway contacts of an angular-contact ball bearing. Because of the viscoelastic behavior of the lubricant, a nonzero lateral traction force is obtained.

Copyright © 1985 by ASME
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