A Unified Model for Rolling Contact Life Prediction

[+] Author and Article Information
T. E. Tallian

Technology Services SKF Industries, Inc., King of Prussia, Pa. 19406

J. of Lubrication Tech 104(3), 336-346 (Jul 01, 1982) (11 pages) doi:10.1115/1.3253216 History: Received March 15, 1981; Online November 13, 2009


Systematizing a ten-year development of engineering models for the prediction of rolling contact fatigue life distributions, a unified model is presented. Based on a crack growth rate relationship with local plastic strain and ductility, and on defect populations in the contact material and at the contact surfaces, the model predicts life of a defect, then generalizes to rolling body life. Subsurface and surface failure modes are considered; the effects of material matrix, defect severity, stress condition, surface traction, and asperity interactions are encompassed. The model includes crack initiation and propagation terms and allows for a finite minimum life. The model specializes to Lundberg-Palmgren theory.

Copyright © 1982 by ASME
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