A model for predicting effective properties of piezocomposites with non-piezoelectric inclusions

Citation
Dn. Fang et al., A model for predicting effective properties of piezocomposites with non-piezoelectric inclusions, J ELAST, 62(2), 2001, pp. 95-118
Citations number
46
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF ELASTICITY
ISSN journal
0374-3535 → ACNP
Volume
62
Issue
2
Year of publication
2001
Pages
95 - 118
Database
ISI
SICI code
0374-3535(200102)62:2<95:AMFPEP>2.0.ZU;2-I
Abstract
Most piezocomposites, which have been widely used in engineering, consist o f piezoelectric inclusions and a non-piezoelectric matrix. Due to the limit s of fabrication technology, it is hard to avoid the matrix intermingling w ith other non-piezoelectric inclusions, such as cavities. The non-piezoelec tric inclusions can substantially affect performance of piezocomposites. In this paper we study the electromechanical fields in piezocomposites which are composed of a non-piezoelectric matrix embedded with both piezoelectric and non-piezoelectric inclusions. Closed-form relations are obtained for t he effective electroelastic moduli of a piezocomposite with both piezoelect ric and non-piezoelectric inclusions. The effective properties of a 1-3 typ e piezocomposite with non-piezoelectric spherical inclusions are analyzed c arefully and explicit formulae for the effective electroelastic properties of a 1-3-0 piezocomposite are also obtained. The analysis shows that the ef fect of non-piezoelectric inclusions on the electroelastic properties of pi ezocomposites is significant and should not be neglected. The model propose d in this paper is expected to be useful for predicting and analyzing the o verall electromechanical properties of piezocomposites with a non-piezoelec tric matrix containing both piezoelectric and non-piezoelectric inclusions.