GNDs in nonlocal plasticity theories: lessons from discrete dislocation simulations

E. van der Giessen; A. Needleman

doi:10.1016/S1359-6462(02)00332-9

GNDs in nonlocal plasticity theories: lessons from discrete dislocation simulations

E. van der Giessen, A. Needleman

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Solutions to simple boundary value problems using discrete dislocation plasticity exhibit key features associated with an accumulation of geometrically necessary dislocations: size effects and long-range stresses. Comparisons of the predictions of nonlocal plasticity theories with the discrete dislocation results provide an assessment of the strengths and weaknesses of various phenomenological theories and also provide a means of identifying appropriate nonlocal boundary conditions. (C) 2002 Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc.

Original language	English
Article number	PII S1359-6462(02)00332-9
Pages (from-to)	127-132
Number of pages	6
Journal	Scripta Materialia
Volume	48
Issue number	2
DOIs	https://doi.org/10.1016/S1359-6462(02)00332-9
Publication status	Published - 13-Jan-2003

Keywords

dislocation theory
mechanical properties
plastic deformation
micro-mechanical modeling
strain gradient plasticity
STRAIN GRADIENT PLASTICITY
CRYSTAL PLASTICITY
DEFORMATION
PREDICTIONS
COMPOSITE
CONTINUUM
FLOW

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abstract = "Solutions to simple boundary value problems using discrete dislocation plasticity exhibit key features associated with an accumulation of geometrically necessary dislocations: size effects and long-range stresses. Comparisons of the predictions of nonlocal plasticity theories with the discrete dislocation results provide an assessment of the strengths and weaknesses of various phenomenological theories and also provide a means of identifying appropriate nonlocal boundary conditions. (C) 2002 Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc.",

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AU - Needleman, A.

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AB - Solutions to simple boundary value problems using discrete dislocation plasticity exhibit key features associated with an accumulation of geometrically necessary dislocations: size effects and long-range stresses. Comparisons of the predictions of nonlocal plasticity theories with the discrete dislocation results provide an assessment of the strengths and weaknesses of various phenomenological theories and also provide a means of identifying appropriate nonlocal boundary conditions. (C) 2002 Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc.

KW - dislocation theory

KW - mechanical properties

KW - plastic deformation

KW - micro-mechanical modeling

KW - strain gradient plasticity

KW - STRAIN GRADIENT PLASTICITY

KW - CRYSTAL PLASTICITY

KW - DEFORMATION

KW - PREDICTIONS

KW - COMPOSITE

KW - CONTINUUM

KW - FLOW

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JF - Scripta Materialia

IS - 2

M1 - PII S1359-6462(02)00332-9

ER -

GNDs in nonlocal plasticity theories: lessons from discrete dislocation simulations

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Keywords

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