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Effective thermoelastic properties of random structure composites reinforced by the clusters of deterministic structure (application to clay nanocomposites)

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Summary

Polymer/clay nanocomposites consisting of an epoxy matrix reinforced by silicate clay plates have been observed to exhibit enhanced mechanical properties at low volume fraction of clay. The matrix and embedded nanoelements are modeled in the framework of continuum mechanics with known mechanical properties previously evaluated by, e.g., molecular dynamic simulation. Nanoclay composite is modeled by the aligned, uniformly distributed in the matrix stacks of parallel clay sheets separated from one another by interlayer matrix galleries of nanometer scale. Interaction of a finite number of oblate spheroidal inclusions modeling an individual stack inside the infinite matrix is carried by the multipole expansion technique. The obtained accurate numerical solution was incorporated into the multiparticle effective field method [5] for the estimation of effective thermoelastic properties. Detailed parametric analyses demonstrate the influence on the effective elastic moduli and stress concentrator factors of such key factors as the shape of nanoelements, interlayer distance, and the number of nanoelements in the stacks of deterministic structure.

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Authors and Affiliations

  1. University of Dayton Research Institute, Dayton, OH, 45469-0168, U.S.A

    V. A. Buryachenko

  2. Institute for Superhard Materials of the National Academy of Sciences, 04074, Kiev, Ukraine

    V. I. Kushch

  3. Air Force Research Laboratory, AFRL/MLBC, WPAFB, OH, 45433-7750, U.S.A

    A. Roy

Authors
  1. V. A. Buryachenko
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  2. V. I. Kushch
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  3. A. Roy
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Correspondence to V. A. Buryachenko.

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Buryachenko, V.A., Kushch, V.I. & Roy, A. Effective thermoelastic properties of random structure composites reinforced by the clusters of deterministic structure (application to clay nanocomposites). Acta Mechanica 192, 135–167 (2007). https://doi.org/10.1007/s00707-006-0421-9

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  • DOI: https://doi.org/10.1007/s00707-006-0421-9

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