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RESEARCH PAPERS

A Closed Crack Tip Terminating at an Interface

[+] Author and Article Information
Maria Comninou

Department of Applied Mechanics and Engineering Science, University of Michigan, Ann Arbor, Mich. 48109

J. Dundurs

Department of Civil Engineering, Northwestern University, Evanston, Ill. 60201

J. Appl. Mech 46(1), 97-100 (Mar 01, 1979) (4 pages) doi:10.1115/1.3424535 History: Received August 01, 1978; Online July 12, 2010

Abstract

Considering a crack that lies in one solid, but has a tip that touches an interface with a second solid, Bogy found that the assumption of a traction-free crack tip leads to oscillating singularities for certain combinations of materials. Such oscillating singularities lead to overlapping of the crack faces, and the purpose of this article is to eliminate the oscillating singularities by allowing the crack tip to be closed. Using an asymptotic analysis and incorporating the effect of friction, the nature of the singularity at the closed crack tip is established and the various consequences explored.

Copyright © 1979 by ASME
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