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International Journal for Multiscale Computational Engineering
IF: 1.016 5-Year IF: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Print: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v5.i2.70
pages 141-152

A Numerical Investigation of Structure-Property Relations in Fiber Composite Materials

Patrizia Trovalusci
Department of Structural Engineering and Geotechnics Sapienza University of Rome Via Gramsci 53, 00197 Rome, Italy
V. Sansalone
Ente Nuove Tecnologie, Energia e Ambiente, Unità Materiali e Nuove Tecnologie, Centro Ricerche Casaccia,Italy; Lab. de Biomécanique et Biomatériaux Ostéo-Articulaires, CNRS UMR 7052, Université Paris, France


A multifield continuous model is adopted to investigate the mechanical behavior of heterogeneous materials made of short, stiff, and tough fibers embedded in a more deformable matrix. This continuum accounts for the presence of internal structure by means of nonstandard field descriptors. The constitutive relations, obtained by a multiscale approach linking the material description at different scales, depend on the geometry and the arrangement of the internal phases and include internal scale parameters, which allow taking into account size effects. A multiscale finite element technique has been used for obtaining the numerical solution of the multifield and the corresponding Cauchy model. The numerical results obtained on a sample fiber-reinforced composite show the effectiveness of the former in pointing out the influence of the size, shape, and orientation of the fibers on the gross behavior of the material.