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On the capability of micromechanics models to capture the auxetic behavior of fibers/particles reinforced composite materials

Azoti, Wiyao, Koutsawa, Y., Bonfoh, N., Lipinski, P. and Belouettar, S. (2011) On the capability of micromechanics models to capture the auxetic behavior of fibers/particles reinforced composite materials. Composite Structures, 94 (1). 156 - 165. ISSN 0263-8223

Item Type: Article

Abstract

This work investigates the possibility to predict the auxetic behavior of composites consisting of non-auxetic phases by means of micromechanical models based on Eshelby's inclusion concept. Two specific microstructures have been considered: (i) the three-layered hollow-cored fibers-reinforced composite and (ii) a microstructure imitating the re-entrant honeycomb micro-architecture. The micromechanical analysis is based on kinematic integral equations as a formal solution of the inhomogeneous material problem. The interaction tensors between the inhomogeneities are computed thanks to the Fourier’s transform. The material anisotropy due to the morphological and topological textures of the inhomogeneities was taken into account thanks to the multi-site approximation of these tensors. In both cases, the numerical results show that auxetic behavior cannot be captured by such models at least in the case of elastic and isotropic phases. This conclusion is supported by corresponding finite element investigations of the second microstructure that indicate that auxetic behavior can be recovered by introducing joints between inclusions. Otherwise, favorable issues are only expected with auxetic components.

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More Information

Depositing User: Wiyao Azoti

Identifiers

Item ID: 5794
Identification Number: https://doi.org/10.1016/j.compstruct.2011.07.006
ISSN: 0263-8223
URI: http://sure.sunderland.ac.uk/id/eprint/5794
Official URL: http://www.sciencedirect.com/science/article/pii/S...

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Catalogue record

Date Deposited: 16 Dec 2015 09:16
Last Modified: 02 Jul 2019 09:10

Contributors

Author: Wiyao Azoti
Author: Y. Koutsawa
Author: N. Bonfoh
Author: P. Lipinski
Author: S. Belouettar

University Divisions

Faculty of Technology > School of Computer Science

Subjects

Engineering > Mechanical Engineering

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