Finite Element Based Modelling Of
Micro-mechanical Response Of Computer
Simulated ‘realistic’ Microstructures With
Spatial Heterogeneity At Different Length Scales
Author(s)
A. Sreeranganathan, H. Singh & A. M. Gokhale
Abstract
Finite element based simulations of micro-mechanical response are performed on
computer simulated microstructures of discontinuously reinforced aluminium
matrix composites that incorporate realistic complex particle
morphologies/shapes, spatially non-uniform distribution of particles and
anisotropic particle orientations. The simulated microstructure encompasses an
area of 1.44mm2 and contains over ten thousand particles. The results are
compared with those for real microstructures to validate the simulation model.
Large-area high-resolution montage digital images are used for finite element
analysis of real microstructures. The simulated microstructure is shown to be
statistically similar to the corresponding real microstructure, and has global as
well as local constitutive properties comparable to that of real microstructure.
Keywords: composites, optical imaging, continuum methods.
1 Introduction
Correlation of material microstructures with their macroscopic properties is of
fundamental importance to materials scientists for understanding the vast
spectrum of existing materials as well as for developing new materials. Material
microstructures, often a complex ensemble of defects and multiple phases
resulting from the processing of the material, directly affect the properties and
thereby, the usability of the material. Accordingly, quantitative characterization
and modelling of microstructures are becoming increasingly important due to the
Keywords
composites, optical imaging, continuum methods.
Related Book
Other papers in this volume
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