Numerical simulation of the effect of particle spatial distribution and strength on tensile behavior of particle reinforced composites

被引：60

作者：

Ayyar, A. ^{[2
]}

Crawford, G. A. ^{[1
]}

Williams, J. J. ^{[1
]}

Chawla, N. ^{[1
,2
]}

机构：

[1] Arizona State Univ, Fulton Sch Engn, Sch Mat, Tempe, AZ 85287 USA

[2] Arizona State Univ, Dept Mech & Aerosp Engn, Fulton Sch Engn, Tempe, AZ 85287 USA

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2008年 / 44卷 / 02期

关键词：

Metal matrix composite; Clustering; Fracture; Finite element method (FEM);

D O I：

10.1016/j.commatsci.2008.04.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spatial distribution of reinforcement particles significantly influences the tensile behavior of particle reinforced composites. In this study, we have modeled the effect of particle clustering in a model metal matrix composite, SiC particle reinforced Al. The SiC particles were modeled as purely elastic, while the Al matrix was modeled as elastic-plastic. To study the effect of particle distribution, the SiC particles were represented as two-dimensional circular particles of uniform diameter. Three particle distributions ordered, random, and clustered were evaluated. The degree of particle clustering was quantified using the coefficient of variance of the mean near-neighbor distance method. The evolution of damage by particle fracture was included in the model. The cases for (a) all SiC particles having uniform fracture strength and (b) variable fracture strength were considered (using a Weibull distribution in strength). The effects of particle distribution were elucidated and are discussed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：496 / 506

页数：11

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