Stability of a dislocation : Discrete model

A. B. MOVCHAN; R. BULLOUGH; J. R. WILLIS

doi:10.1017/S0956792598003489

Abstract

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An algorithm, based on a discrete nonlinear model, is presented for evaluation of the critical shear stress required to move a dislocation through a lattice. The stability of solutions of the corresponding evolution problem is analysed. Numerical results provide upper and lower bounds for the critical shear stress.

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