Developing Techniques For Modeling Spatially
Heterogeneous Materials
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
Keywords
Related Book
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