The Problem of Internal and Edge Cracks in an Orthotropic Strip

[+] Author and Article Information
F. Delale, F. Erdogan

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pa.

J. Appl. Mech 44(2), 237-242 (Jun 01, 1977) (6 pages) doi:10.1115/1.3424031 History: Received July 01, 1976; Revised November 01, 1976; Online July 12, 2010


The plane elastostatic problem of internal and edge cracks in an infinite orthotropic strip is considered. The problems for the material types I and II are formulated in terms of singular integral equations. For the symmetric case the stress-intensity factors are calculated and are compared with the isotropic results. The results show that because of the dependence of the Fredholm kernels on the elastic constants in the strip (unlike the crack problem for an infinite plane) the stress-intensity factors are dependent on the elastic constants and are generally different from the corresponding isotropic results.

Copyright © 1977 by ASME
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