Strain gradients and continuum modeling of size effect in metal matrix composites
type: Item
instance of: scholarly article
title: Strain gradients and continuum modeling of size effect in metal matrix composites
zbMATH Open document ID: 0885.73044
DOI: 10.1007/BF01262530
published in: Acta Mechanica
publication date: 1998-04-23T00:00:00Z
review text: The authors present the constitutive modeling for the particle size effects on the strength of particulate-reinforced matrix composites. The approach is based on a gradient-dependent theory of plasticity that incorporates strain gradients into the expression for the flow stress of matrix materials, and on a finite unit cell technique that is used to calculate the overall flow properties of composites. The authors show that the strain gradient term introduces a spatial length scale in the constitutive equations for composites, and the dependence of the flow of the stress on the particle size can be obtained. Moreover, a non-dimensional analysis along with the numerical results yields an explicit expression for the strain gradient coefficient in terms of the particle size, strain and yield stress. The authors present calculations for aluminum matrix composites with ellipsoidal particles and compare numerical results with experimental data.
Mathematics Subject Classification ID: 74E30
zbMATH DE Number: 1019279
zbMATH Keywords: particulate-reinforced composites
zbMATH Keywords: gradient-dependent theory of plasticity
zbMATH Keywords: constitutive equations
zbMATH Keywords: aluminum matrix composites with ellipsoidal particles
author: Hongtao Zhu
author: Hussein M. Zbib
author: E. C. Aifantis
reviewed by: Hilmi Demiray
MaRDI profile type: Publication
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full work available at URL: https://doi.org/10.1007/bf01262530
OpenAlex ID: W2018875994
description: scientific article; zbMATH DE number 1019279