2015/05/06 by Daniel Gottschalk, Gottschalk, D., Andrew McBride +9
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Force Microscopy Techniques and Applications #Materials Science (cond-mat.mtrl-sci) #Microstructure and mechanical properties #Nonlocal and gradient elasticity in micro/nano structures #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.1505.01822
openalex publication_date 2015/05/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A detailed theoretical and numerical investigation of the infinitesimal single-crystal gradient plasticity and grain-boundary theory of Gurtin (2008) "A theory of grain boundaries that accounts automatically for grain misorientation and grain-boundary orientation". Journal of the Mechanics and Physics of Solids 56 (2), 640-662, is performed. The governing equations and flow laws are recast in variational form. The associated incremental problem is formulated in minimization form and provides the basis for the subsequent finite element formulation. Various choices of the kinematic measure used to characterize the ability of the grain boundary to impede the flow of dislocations are compared. An alternative measure is also suggested. A series of three-dimensional numerical examples serve to elucidate the theory.