Effects of the piezoelectric phase’s geometric properties on effective coefficients of 1–3 piezoelectric composites

The present paper reports the electromechanical coupling coefficients of piezoelectric composite material (PCM) are affected by different geometric properties of piezoelectric phase for 1–3 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 1–3 type PCM and offer useful guidelines to the design of PCM devices.