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Original Articles

Le champ élastique d'une dislocation sur l'arěte d'une interface dièdre en élasticité isotrope

Pages 21-30 | Received 20 May 1981, Accepted 08 Jun 1981, Published online: 04 Oct 2006
 

Abstract

THE ELASTLC FIELD OF A DISLOCATION AT THE EDGE OF A DIHEDRAL INTERFACE IN ISOTROPIC ELASTICITY

The line energy and analytical expressions for the displacement, and stress fields surrounding a dislocation located at the edge of a dihedral interface separating two different welded isotropic media, are derived from the inversion of a linear system of 12 equations with 12 unknowns. This system is subdivided into two systems 8 × 8 and 4 × 4, so that the effects of the edge and screw components of the Burgers vector can be separately calculated. When the dihedral angle tends to π, these expressions become identical to those obtained by Nakahara, Wu and Li (1972) for the case of a planar interface.

Résumé

L'énergie de ligne et les expressions analytiques des champs des déplacements et des contraintes autour d'une dislocation située sur l'arěte d'une interface dièdre, séparant deux milieux isotropes différents et soudés, sont obtenues à partir de la résolution d'un système linéaire de 12 équations à 12 inconnues. Celui-ci se subdivise en deux systèmes 8 × 8 et 4 × 4, ce qui permet de traiter indépendamment les effets des composantes coins et vis du vecteur de Burgers. Lorsque l'angle dièdre tend vers π, ces expressions s'identifient à celles obtenues par Nakahara, Wu et Li (1972) dans le cas d'une interface plane.

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