Investigation the Dimensional Ratio Effect on the Resonant Properties of Piezoelectric Ceramic Disk

Abstract

In this work, the vibration characteristics of a piezoelectric ceramic disk with different dimensional ratio are studied by simulation method. Computational finite element modeling combined with the computational programs ha s allowed for the prediction of the effect , the change of diameter-to-thickness ratio on the resonant characteristics, the vibration modes as well as comparing the physic properties of piezoceramics. Three types of piezoelectric materials were chosen, piezoelectric materials (PZT) and Pb-free piezoelectric materials Ba(Zr 0.2 Ti 0.8 )O 3 -50(Ba 0.7 Ca 0.3 )TiO 3 (BZT-50BCT), BaTiO 3 for research.