期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 38, 期 15, 页码 2615-2637出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0020-7683(00)00173-6
关键词
plasticity; non-local theory; strain gradient plasticity; dislocations; strengthening mechanics; consitutive theory
类别
A Taylor-based nonlocal theory of plasticity is proposed to account for the size dependence of plastic deformation at micron and submicron length scales. This theory is intended to link Taylor's model of dislocation hardening to a nonlocal theory of plasticity in which the density of geometrically necessary dislocations is expressed as a nonfocal integral of the strain field. We make application of this theory to void growth, cavitation instabilities and particle-reinforced composites, as well as comparison with experiments on micro-torsion, micro-bending and micro-indentation. (C) 2001 Elsevier Science Ltd. All rights reserved.
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