Perturbation problems for interfacial cracks

A. Piccolroaz, G. Mishuris, A. B. Movchan

Research output: Chapter in Book/Report/Conference proceedingConference Proceeding (Non-Journal item)

Abstract

We consider the perturbation problem of a Mode III interfacial crack. The perturbation is of geometrical type and can be both perturbation of the crack faces and perturbation of the interface, which can deviate from the initial straight line configuration. Asymptotic formulae are derived for the first-order perturbation of the stress intensity factor. It is shown that, due to the unsymmetrical nature of the problem, the Mode III skew-symmetric weight function derived in Piccolroaz et al. (2009) is essential for the derivation of the correct asymptotic formulae. To illustrate the method, we present the numerical results for different geometrical perturbations of a half-plane interfacial crack in an infinite bimaterial structure.

Original languageEnglish
Title of host publicationAdvances and Trends in Structural Engineering, Mechanics and Computation
Subtitle of host publicationProceedings of the 4th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2010
EditorsAlphose Zingoni
PublisherTaylor & Francis
Pages367-370
Number of pages4
ISBN (Print)9780415584722
Publication statusPublished - 01 Jan 2010
Event4th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2010 - Cape Town, South Africa
Duration: 06 Sept 201008 Sept 2010

Publication series

NameAdvances and Trends in Structural Engineering, Mechanics and Computation - Proceedings of the 4th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2010

Conference

Conference4th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2010
Country/TerritorySouth Africa
CityCape Town
Period06 Sept 201008 Sept 2010

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