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Evaluation of second-order correlations adjusted with simulated annealing on physical properties of unidirectional nonoverlapping fiber-reinforced materials (UD Composites)

Author

Listed:
  • L. Lakhal

    (Unité de Mécanique de Lille, EA 7512, Université de Lille, France)

  • Y. Brunet

    (Unité de Mécanique de Lille, EA 7512, Université de Lille, France)

  • T. Kanit

    (Unité de Mécanique de Lille, EA 7512, Université de Lille, France)

Abstract

The focus of this paper is on aligned fiber-reinforced composites, where fiber centers were randomly distributed in their cross-sections. The volume fractions of fibers were Vf=30% and Vf=50%. Samples were built with the help of the simulated annealing technique according to the chosen Radial Distribution Functions (RDFs). For each sample, the fields of local stresses and heat fluxes were simulated by finite element method. Then, homogenization by volume averaging was performed in order to investigate both the effective mechanical and thermal properties. The effect of RDF shape on elastic and thermal properties was quantified along with the influence of the probability of near neighbors of fibers on the physical properties. The more the fiber distributions deviate from Poisson’s Law, the higher the results compared to the lower bound of Hashin–Shtrikman.

Suggested Citation

  • L. Lakhal & Y. Brunet & T. Kanit, 2019. "Evaluation of second-order correlations adjusted with simulated annealing on physical properties of unidirectional nonoverlapping fiber-reinforced materials (UD Composites)," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 30(02n03), pages 1-14, February.
    • Handle: RePEc:wsi:ijmpcx:v:30:y:2019:i:02n03:n:s0129183119500177
    DOI: 10.1142/S0129183119500177
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