Interaction of dislocations in anisotropic bimaterials

Jianmin Qu, Lin Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The interaction of dislocations in an anisotropic bimaterial are studied in this paper. Using the Stroh formalism in the theory of anisotropic elasticity, explicit real-form expressions of the entire stress field due to an interfacial dislocation in anisotropic bimaterials are obtained in terms of the Barnett-Lothe tensors. Unlike a dislocation in a homogeneous medium, an interfacial dislocation induces two stress fields on the interface; one is inversely proportional to the distance away from the dislocation core, the other is a delta function representing a line force acting at the dislocation core. The presence of the line force is due to the incompatibility of the interface. Taking advantages of the real form solutions, expressions of the interaction energy and Peach-Koehler forces between two dislocations are derived. Possible stable equilibrium configurations of two dislocations are investigated by studying the Peach-Koehler forces exerted on the dislocations.

Original languageEnglish
Title of host publicationRecent Developments in Elasticity
Pages13-21
Number of pages9
StatePublished - 1991
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
Duration: 1 Dec 19916 Dec 1991

Publication series

NameAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume124
ISSN (Print)0160-8835

Conference

ConferenceWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period1/12/916/12/91

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