ON THE ELASTIC STRAIN-ENERGY REPRESENTATION OF A DISLOCATED BODY AND DISLOCATION EQUILIBRIUM CONDITIONS

Various equilibrium dislocation distributions in finite and infinite m edia were recently analyzed [5], both from theoretical and computation al standpoints. In this paper we shed further light on this issue, by elaborating on a variational procedure that gives the required equilib rium conditions: the glide forces on each dislocation represent a set of self-equilibrating forces. The derivation is carried out in a gener al 3-dimensional setting, with adequate specifications for edge disloc ations in plain-strain case.