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RESEARCH PAPERS

Analysis of Multiple Fatigue Cracks—Part I: Theory

[+] Author and Article Information
M. C. Dubourg

Laboratoire de Mécanique des Contacts (CNRS URA 856), Institut National des Sciences Appliquées de Lyon, 69621 Villeurbanne Cédex, France

B. Villechaise

Laboratoire de Mécanique des Solides (CNRS URA 861), Université de Poitiers, 86022 Poitiers Cédex, France

J. Tribol 114(3), 455-461 (Jul 01, 1992) (7 pages) doi:10.1115/1.2920905 History: Received September 05, 1990; Revised June 01, 1991; Online June 05, 2008

Abstract

This paper analyzes the effects of multiple cracks situated in the contact zone vicinity of an elastic isotropic component, modeled as a half-plane. Friction between the crack faces is taken into account using Coulomb’s law. Straight arbitrarily oriented cracks are considered. Any contact condition can be modeled between the crack faces as well as any loading condition over the half-plane surface, including complete loading cycles. The method has been tested for up to 5 cracks and shows no limitation in crack number. Further, the method is general as no prior assumptions concerning the state of the crack, i.e., the slip-stick-open configurations along the crack are required. The stress intensity factors (SIFs) calculated for two crack configuration are compared with those obtained for single cracks.

Copyright © 1992 by The American Society of Mechanical Engineers
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