Effects of the piezoelectric phaseas geometric properties on effective coefficients of 1a3 piezoelectric composites

Research highlights ao The effective coefficients are predicted for circular cylinder, square column and circular cylinder alternated with square column at various fiber volume fractions by using the AHM and FEM. ao The present results indicate the shape of piezoelectric phase influences the effecti...

Full description

Saved in:
Bibliographic Details
Published in:Computational materials science 2011-05, Vol.50 (7), p.2135-2141
Main Authors: Li, Yan, Zheng, Hui, Long, Shiguo, Wu, Lianglong
Format: Article
Language:English
Subjects:
Circular cylinders
Devices
Finite element method
Homogenizing
Mathematical analysis
Mathematical models
Piezoelectricity
Volume fraction
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Research highlights ao The effective coefficients are predicted for circular cylinder, square column and circular cylinder alternated with square column at various fiber volume fractions by using the AHM and FEM. ao The present results indicate the shape of piezoelectric phase influences the effective properties weaker than the volume fraction. ao Stronger stress concentration in square column is observed, so circular cylinder is the best choice for piezoelectric phase shape in designing PCM. The present paper reports the electromechanical coupling coefficients of piezoelectric composite material (PCM) are affected by different geometric properties of piezoelectric phase for 1a3 periodic composites that is made of piezoceramic fibers embedded in a soft non-piezoelectric matrix. Three-dimensional finite element model has been developed to study the three types of geometric models of piezoelectric phase with different volume fraction. Geometric models with circular cylinder, square column and circular cylinder alternated with square column are used to predict the coefficients of the validity via asymptotic homogenization method (AHM) and the numerical approach the finite element method (FEM). Three types of geometric model are built via the finite element software ABAQUS, and the elastic, piezoelectric and dielectric coefficients are evaluated via AHM both FEM. The results indicate that the validity parameters of PCM have the direct relationship with the volume fraction, and geometric shape is essential factor for distribution of Von-Misses when device working. The present work may improve application of 1a3 type PCM and offer useful guidelines to the design of PCM devices.
ISSN:0927-0256
DOI:10.1016/j.commatsci.2011.02.019