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A Study on Prediction of Effective Material Properties of Composites with Fillers of Different Sizes and Arrangements  

Lee, J. K. (대구카톨릭대학교 기계자동차공학부)
Kim, J. G. (대구카톨릭대학교 기계자동차공학부)
Publication Information
Composites Research / v.18, no.5, 2005 , pp. 21-26 More about this Journal
Abstract
The validity of Eshelby-type model with Mori-Tanaka's mean field theory to predict the effective material properties of composites have been investigated in terms of filler size and its arrangement. The 2-dimensional plate composites including constant volume fraction of fillers are used as the model composite for the analytical studies, where the filler size and its arrangement are considered as parameters. The exact effective material properties of the composites are computed by finite element analysis(FEA), which are compared with effective material properties from the Eshelby-type model. Although the fillers are periodically or randomly arranged, the average Young's moduli by Eshelby-type model and FEA are in good agreement, specially for the ratio of specimen size to filler size being smaller than 0.03. However, Poisson's ratio of the composite by the Eshelby-type model is overestimated by $20\%$.
Keywords
effective material properties of composites; finite element analysis; filler size; filler arrangement; Eshelby's equivalent inclusion method; Mori-Tanaka's mean field theory;
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