Effect of Stresses Induced by a Spherical Asperity on Surface Pitting in Elastohydrodynamic Contacts
- 1 January 1985
- journal article
- research article
- Published by Taylor & Francis in A S L E Transactions
- Vol. 28 (1) , 11-20
- https://doi.org/10.1080/05698198508981589
Abstract
An attempt is made to correlate some morphological characteristics of pitting cracks with a simple asperity interaction model. The stress field created by a semispherical pressure is combined with the macroscopic Hertzian stress field. For the initiation of fatigue cracks, emphasis is given to two stresses: the maximum range of the superimposed average shear stress over a semicircular area inclined at an angle α to the rolling surface; and the maximum of the superimposed average normal stress over the same semicircular area. Possible mechanisms for initiation of surface pitting are proposed.Keywords
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