WIT Press


Developing Techniques For Modeling Spatially Heterogeneous Materials

Price

Free (open access)

Paper DOI

10.2495/MC030141

Volume

43

Pages

10

Published

2003

Size

812.59 kb

Author(s)

J. W. Leggoe

Abstract

The macroscale properties of materials evolve under the influence of phenomena arising across a broad spectrum of length scales, with spatial heterogeneity strongly influencing processes at all length scales. In order to fully investigate the effect of spatial heterogeneity on macroscale material behavior, it is necessary to formulate models that capture the interactions between microscale material phenomena and the mesoscale linkage processes that govern macroscale behavior. In order to accomplish this, a Cellular Automata (CA) based approach has been developed, in which a material volun~e is divided into an array of discrete domains, with each domain being randomly assigned an individual value for a property of interest. This approach has been applied to model deformation in particulate reinforced metal matrix composites (PR MMCs) and failure in duct

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