The Self‐Energy of a Dislocation and the Elastic Energy of Piecewise Straight Dislocation Configurations

A comparison is made of the models of Bullough and Foreman [1], and of Kröner [2] and Jøssang et al. [3] for determining the self‐energy of a straight dislocation. The differences and their physical implications are pointed out. It is concluded that, from a physical point of view, the methods of Kröner and Jøssang et al. are the more correct ones. A discrepancy between the formula of Jøssang et al. [3] and that of de Wit [4] for the interaction energy between two straight dislocation segments is shown to disappear when an error in de Wit's formula is corrected.