Quasifractional Approximants in the Theory of Composite Materials |
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Authors: | Igor Andrianov Vladyslav Danishevsky Stanisław Tokarzewski |
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Institution: | (1) State Academy of Civil Engineering and Architecture, Dnepropetrovsk, Ukraine;(2) Institute of Fundamental Technological Research, Warsaw, Poland |
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Abstract: | We study the effective heat conductivity of regular arrays of perfectly conducting spheres embedded in a matrix with unit conductivity. Quasifractional approximants allow us to derive an approximate analytical solution, valid for all values of the spheres volume fraction 0, max] (max is the maximum volume fraction of a spheres). As a starting point we use a perturbation approach for 0 and an asymptotic solution for max. Three different spatial arrangements of the spheres, simple cubic, body centred and face centred cubic arrays, are considered. Results obtained give a good agreement with numerical data. |
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Keywords: | effective properties homogenization composites conductivities bounds Padé approximants |
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