Driving Forces and Boundary Conditions in Continuum Dislocation Mechanics
Materials Science
2016-08-31 v1
Abstract
As a guide to constitutive specification, driving forces for dislocation velocity and nucleation rates are derived for a field theory of dislocation mechanics. A condition of closure for the theory in the form of a boundary condition for dislocation density is also derived. Kinematical features of dislocation evolution like initiation of bowing of a pinned screw segment, and initiation of cross-slip of a screw segment are discussed. An exact solution for the expansion of a polygonal loop as well as representation within the theory of dislocation level Schmid and non-Schmid behavior, and unloaded stress-free and steady microstructures are also discussed.
Cite
@article{arxiv.cond-mat/0205402,
title = {Driving Forces and Boundary Conditions in Continuum Dislocation Mechanics},
author = {Amit Acharya},
journal= {arXiv preprint arXiv:cond-mat/0205402},
year = {2016}
}
Comments
31 pages