Modeling of particle reinforced metal matrix composites using actual microstructures

Nikhilesh Chawla, K. K. Chawla

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Finite element modeling and analysis have been used to analyze the behavior of particle reinforced metal matrix composites for a long while. Up until recently, most of this work involved treating particle as a sphere embedded in a metallic matrix. It was soon realized that these models did not account for the microstructural factors that influence the mechanical behavior of the composite material. We provide examples of the use of two-dimensional (2D) and three-dimensional (3D) microstructure-based FEM models that accurately predict the properties of real particle reinforced composite materials. We show that 2D models do capture the anisotropy in deformation behavior induced by anisotropy in particle distribution. The experimentally observed dependence of Young's modulus and tensile strength is confirmed by the 2D microstructure-based numerical model. The two-dimensional modeling, however, has its limitations because one models only a two-dimensional section of the real, three-dimensional object. For a realistic comparison to actual experimental values, one must resort to three-dimensional modeling. A serial sectioning process can be used to reproduce and visualize the 3D microstructure of particle reinforced metal matrix composites. The 3D microstructure-based FEM accurately represents the alignment, aspect ratio, and distribution of the particles; and allows visualization and simulation of the material behavior.

Original languageEnglish (US)
Title of host publication38th SAMPE Fall Technical Conference
Subtitle of host publicationGlobal Advances in Materials and Process Engineering
StatePublished - Dec 1 2006
Event38th SAMPE Fall Technical Conference: Global Advances in Materials and Process Engineering - Dallas, TX, United States
Duration: Nov 6 2006Nov 9 2006

Publication series

NameInternational SAMPE Technical Conference

Other

Other38th SAMPE Fall Technical Conference: Global Advances in Materials and Process Engineering
CountryUnited States
CityDallas, TX
Period11/6/0611/9/06

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Chawla, N., & Chawla, K. K. (2006). Modeling of particle reinforced metal matrix composites using actual microstructures. In 38th SAMPE Fall Technical Conference: Global Advances in Materials and Process Engineering (International SAMPE Technical Conference).