TY - EJOU
AU - Ishihara, Daisuke
AU - Ramegowda, Prakasha Chigahalli
AU - Aikawa, Shoichi
AU - Iwamaru, Naoki
TI - Importance of Three-Dimensional Piezoelectric Coupling Modeling in Quantitative Analysis of Piezoelectric Actuators
T2 - Computer Modeling in Engineering \& Sciences
PY - 2023
VL - 136
IS - 2
SN - 1526-1506
AB - This paper demonstrates the importance of three-dimensional (3-D) piezoelectric coupling in the electromechanical behavior of piezoelectric devices using three-dimensional finite element analyses based on weak and strong coupling models for a thin cantilevered piezoelectric bimorph actuator. It is found that there is a significant difference between the strong and weak coupling solutions given by coupling direct and inverse piezoelectric effects (i.e., piezoelectric coupling effect). In addition, there is significant longitudinal bending caused by the constraint of the inverse piezoelectric effect in the width direction at the fixed end (i.e., 3-D effect). Hence, modeling of these effects or 3-D piezoelectric coupling modeling is an electromechanical basis for the piezoelectric devices, which contributes to the accurate prediction of their behavior.
KW - Piezoelectric coupling effect; piezoelectric bimorph actuator; weak coupling; strong coupling; three-dimensional finite element analysis
DO - 10.32604/cmes.2023.024614