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

Full text not available from this repository. (Request a copy)

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.

Item Type: Article
Subjects: Engineering > Mechanical Engineering
Divisions: Faculty of Applied Sciences > Department of Computing Engineering and Technology
Depositing User: Wiyao Azoti
Date Deposited: 16 Dec 2015 09:16
Last Modified: 16 Dec 2015 09:16
URI: http://sure.sunderland.ac.uk/id/eprint/5794

Actions (login required)

View Item View Item