A Surface Crack in a Graded Medium Under General Loading Conditions

• Autores: F. Erdogan, S. Dag
• Localización: Journal of applied mechanics, ISSN 0021-8936, Vol. 69, Nº. 5, 2002, págs. 580-588
• Idioma: inglés
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• Resumen

  • In this study the problem of a surface crack in a semi-infinite elastic graded medium under general loading conditions is considered. It is assumed that first by solving the problem in the absence of a crack it is reduced to a local perturbation problem with arbitrary self-equilibrating crack surface tractions. The local problem is then solved by approximating the normal and shear tractions on the crack surfaces by polynomials and the normalized modes I and II stress intensity factors are given. As an example the results for a graded half-plane loaded by a sliding rigid circular stamp are presented. ©2002 ASME