Non-local plasticity effects on the tensile properties of a metal matrix composite

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Abstract

For a metal reinforced by aligned short fibres the effect of a material length scale characterising the inelastic deformations of the metal is studied. The elastic-plastic constitutive relations used here to represent the nonlocal effects are formulated so that the instantaneous hardening moduli depend on the gradient of the effective plastic strain. Numerical cell-model analyses are used to obtain a parametric understanding of the influence of different combinations of the main material parameters. The analyses show a strong dependence on the fibre diameter for given values of all other material parameters, and it is shown that this dependence differs somewhat for different values of the fibre aspect ratio.
Original languageEnglish
JournalEuropean Journal of Mechanics A - Solids
Volume20
Issue number4
Pages (from-to)601-613
ISSN0997-7538
Publication statusPublished - 2001

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