Propagation of Semi-Elliptical Surface Cracks in Lubricated Rolling/Sliding Elliptical Contacts

[+] Author and Article Information
M. Kaneta

Department of Mechanical Engineering, Kyushu Institute of Technology, Kitakyushu, 804, Japan

Y. Murakami

Department of Mechanics and Strength of Solids, Kyushu University, Hakozaki, Fukuoka, 812, Japan

J. Tribol 113(2), 270-275 (Apr 01, 1991) (6 pages) doi:10.1115/1.2920616 History: Received February 26, 1990; Revised June 19, 1990; Online June 05, 2008


In this paper the three-dimensional mixed mode stress intensity factors for semi-elliptical inclined cracks formed on elliptical Hertzian contact surfaces are calculated. This analysis accounts for both the frictional forces between the contact surfaces and between the crack faces, as well as including fluid pressure acting on the crack faces. Various factors affecting the crack growth are discussed and possible growth modes are investigated. In particular, the analytical results predict that the crack has a faster growth rate when the major axis of the contact ellipse is in the direction of motion of the load as compared to the minor axis being in the direction of motion of the load.

Copyright © 1991 by The American Society of Mechanical Engineers
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