Mechanism of Surface Crack Growth in Lubricated Rolling/Sliding Spherical Contact

[+] Author and Article Information
M. Kaneta, M. Suetsugu

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

Y. Murakami

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

J. Appl. Mech 53(2), 354-360 (Jun 01, 1986) (7 pages) doi:10.1115/1.3171764 History: Received February 07, 1985; Revised August 02, 1985; Online July 21, 2009


A possible mechanism of the crack growth is described by calculating stress intensity factors for a semicircular surface crack under a spherical Hertzian contact moving over a cracked elastic half-space surface. In the analysis the crack is assumed to be inclined at an angle of 45 deg from the surface. In particular, the effects of surface traction, frictional force between crack faces, and oil hydraulic pressure caused by oil penetrated into the crack are discussed.

Copyright © 1986 by ASME
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