Abstract Several composite materials used in engineering – such as ceramic/metal matrix composites, concrete, masonry-like/geo–materials and innovative meta–materials – have internal micro-structures characterized by a random distribution of inclusions (particles) embedded in a matrix. Their structural response is highly influenced not only by the mechanical properties of components, but also by the shape, size and position of the inclusions. In this work, we adopt a statistically-based micropolar homogenization procedure, to obtain the overall elastic properties of homogeneous micropolar continua able to naturally account for scale and skew–symmetric shear effects. Attention is paid to the sensitivity to material contrast, defined as the mismatch between classical and micropolar constitutive properties of matrix and inclusions. A statistical specifically conceived convergence criterion is adopted which allow us to identify the REV (Representative Volume Element) for any value of material contrast.

Sensitivity to material contrast in homogenization of random particle composites as micropolar continua / Reccia, Emanuele; DE BELLIS, MARIA LAURA; Trovalusci, Patrizia; Masiani, Renato. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - 136:Supplement C(2018), pp. 39-45. [https://doi.org/10.1016/j.compositesb.2017.10.017]

Sensitivity to material contrast in homogenization of random particle composites as micropolar continua

RECCIA, EMANUELE;TROVALUSCI, Patrizia
;
MASIANI, Renato
2018

Abstract

Abstract Several composite materials used in engineering – such as ceramic/metal matrix composites, concrete, masonry-like/geo–materials and innovative meta–materials – have internal micro-structures characterized by a random distribution of inclusions (particles) embedded in a matrix. Their structural response is highly influenced not only by the mechanical properties of components, but also by the shape, size and position of the inclusions. In this work, we adopt a statistically-based micropolar homogenization procedure, to obtain the overall elastic properties of homogeneous micropolar continua able to naturally account for scale and skew–symmetric shear effects. Attention is paid to the sensitivity to material contrast, defined as the mismatch between classical and micropolar constitutive properties of matrix and inclusions. A statistical specifically conceived convergence criterion is adopted which allow us to identify the REV (Representative Volume Element) for any value of material contrast.
2018
Particle composites, Micropolar continua, Scale-dependent statistical homogenization, Representative volume element
01 Pubblicazione su rivista::01a Articolo in rivista
Sensitivity to material contrast in homogenization of random particle composites as micropolar continua / Reccia, Emanuele; DE BELLIS, MARIA LAURA; Trovalusci, Patrizia; Masiani, Renato. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - 136:Supplement C(2018), pp. 39-45. [https://doi.org/10.1016/j.compositesb.2017.10.017]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1014474
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