### Abstract

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.

Original language | English (US) |
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Pages (from-to) | 496-506 |

Number of pages | 11 |

Journal | Computational Materials Science |

Volume | 44 |

Issue number | 2 |

DOIs | |

State | Published - Dec 2008 |

### Fingerprint

### Keywords

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

### ASJC Scopus subject areas

- Materials Science(all)
- Chemistry(all)
- Computer Science(all)
- Physics and Astronomy(all)
- Computational Mathematics
- Mechanics of Materials

### Cite this

*Computational Materials Science*,

*44*(2), 496-506. https://doi.org/10.1016/j.commatsci.2008.04.009

**Numerical simulation of the effect of particle spatial distribution and strength on tensile behavior of particle reinforced composites.** / Ayyar, A.; Crawford, G. A.; Williams, J. J.; Chawla, Nikhilesh.

Research output: Contribution to journal › Article

*Computational Materials Science*, vol. 44, no. 2, pp. 496-506. https://doi.org/10.1016/j.commatsci.2008.04.009

}

TY - JOUR

T1 - Numerical simulation of the effect of particle spatial distribution and strength on tensile behavior of particle reinforced composites

AU - Ayyar, A.

AU - Crawford, G. A.

AU - Williams, J. J.

AU - Chawla, Nikhilesh

PY - 2008/12

Y1 - 2008/12

N2 - 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.

AB - 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.

KW - Clustering

KW - Finite element method (FEM)

KW - Fracture

KW - Metal matrix composite

UR - http://www.scopus.com/inward/record.url?scp=55649112059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55649112059&partnerID=8YFLogxK

U2 - 10.1016/j.commatsci.2008.04.009

DO - 10.1016/j.commatsci.2008.04.009

M3 - Article

VL - 44

SP - 496

EP - 506

JO - Computational Materials Science

JF - Computational Materials Science

SN - 0927-0256

IS - 2

ER -