Elastic self-energies of undissociated dislocation jogs
- 1 June 1967
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 15 (138) , 1155-1165
- https://doi.org/10.1080/14786436708222756
Abstract
Analytic expressions are derived for the elastic energy of an undissociated jog lying perpendicular to an undissociated straight dislocation line of arbitrary Burgers vector in an otherwise perfect infinite isotropic elastic medium. These expressions are the most accurate which can presently be obtained, but the analysis still involves minor approximations. In particular, those associated with the contribution to the energy arising from the work done by core surface tractions at the corners in the dislocation are important for short jogs and are discussed in detail. Numerical results are presented and these and the analytic expressions are compared with those of previous workers, which involve major approximations. It is concluded that even the new expressions are not reliable for short jogs.Keywords
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