Finite element modeling of deformation in particulate reinforced metal matrix composites with random local microstructure variation

摘要

Deformation in particulate reinforced metal matrix composites(PR MMCs) with locally varying reinforcement volume fraction has been modelled using a two-scale finite element approach. the responses of axisymmetric unit cell models were used to define the constitutive response of mesoscale regions posses- sing varying volume fractions. Macroscale response was then investigated using two- and three-dimensional "random arrays" of finite elements, in which element properties were randomly assigned in line with a Gaussian distribution.