Effect of defect energy on strain-gradient predictions of confined single-crystal plasticity

L Nicola, E Van der Giessen*, Morton E. Gurtin

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

50 Citaten (Scopus)
359 Downloads (Pure)

Samenvatting

Gurtin recently proposed a strain-gradient theory for crystal plasticity in which the gradient effect originates from a defect energy that characterizes energy storage due to the presence of a net Burgers vector. Here we consider a number of different possibilities for this energy: specifically, working within a simple two-dimensional framework, we compare predictions of the theory with results of discrete-dislocation simulations of stress relaxation in thin films. Our objective is to investigate which specific defect energies are capable of capturing the size-dependent response of such systems for different crystal orientations. (c) 2005 Elsevier Ltd. All rights reserved.

Originele taal-2English
Pagina's (van-tot)1280-1294
Aantal pagina's15
TijdschriftJournal of the Mechanics and Physics of Solids
Volume53
Nummer van het tijdschrift6
DOI's
StatusPublished - jun.-2005

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