Elastic properties of spherically anisotropic piezoelectric composites

doi:10.1088/1674-1056/19/9/096201

Abstract Effective elastic properties of spherically anisotropic piezoelectric composites, whose spherically anisotropic piezoelectric inclusions are embedded in an infinite non-piezoelectric matrix, are theoretically investigated. Analytical solutions for the elastic displacements and the electric potentials under a uniform external strain are derived exactly. Taking into account of the coupling effects of elasticity, permittivity and piezoelectricity, the formula is derived for estimating the effective elastic properties based on the average field theory in the dilute limit. An elastic response mechanism is revealed, in which the effective elastic properties increase as inclusion piezoelectric properties increase and inclusion dielectric properties decrease. Moreover, a piezoelectric response mechanism, of which the effective piezoelectric response vanishes due to the symmetry of spherically anisotropic composite, is also disclosed.

Keywords: elasticity piezoelectric composites spherically anisotropy

Received: 24 February 2009
Revised: 07 March 2010
Accepted manuscript online:

PACS:	6220D
	7760
	7720

Fund: Project supported by the Centre for Smart Materials of the Hong Kong Polytechnic University and a RGC Grant PolyU5015/06P (internal code B-Q996) of the HKSAR, and the National Natural Science Foundation of China (Grant Nos. 10374026 and 40876094).

Cite this article:

Wei En-Bo(魏恩泊), Gu Guo-Qing(顾国庆), and Poon Ying-Ming(潘英明) Elastic properties of spherically anisotropic piezoelectric composites 2010 Chin. Phys. B 19 096201

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