A single theory for some quasi-static, supersonic, atomic, and tectonic scale applications of dislocations. (November 2015)

• Record Type: Journal Article
• Authors: Zhang, Xiaohan; Acharya, Amit; Walkington, Noel J.; Bielak, Jacobo
• Is Part Of: Journal of the mechanics and physics of solids. Volume 84(2015:Nov.)
• Page Start: 145
• Page End: 195
• Publication Date: 2015-11
• Subjects: Field Dislocation Mechanics -- Peierls stress -- Dislocation pile-up -- Dislocation dissociation -- Supersonic dislocation -- Dynamic dislocation fields -- Dynamic rupture; Mechanics, Applied -- Periodicals; Solids -- Periodicals; Mechanics -- Periodicals; Mécanique appliquée -- Périodiques; Solides -- Périodiques; Mechanics, Applied; Solids; Periodicals; 531.05
• DOI: 10.1016/j.jmps.2015.07.004
• Languages: English
• ISSNs: 0022-5096

Abstract

Abstract: We describe a model based on continuum mechanics that reduces the study of a significant class of problems of discrete dislocation dynamics to questions of the modern theory of continuum plasticity. As applications, we explore the questions of the existence of a Peierls stress in a continuum theory, dislocation annihilation, dislocation dissociation, finite-speed-of-propagation effects of elastic waves vis-a-vis dynamic dislocation fields, supersonic dislocation motion, and short-slip duration in rupture dynamics.