Mechanical and Electrical Damage Ahead of Notch-Tip in Thin Piezoelectric Plate
Yang Xinhua,Feng Weigan,Chen Chuanyao
(Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China)

Abstract: Based on the three-dimensional anisotropic piezoelectric damage const itutive model proposed by Yang etc., the constitutive equation and equilibrium equation for extended plane stress piezoelectric damage problems are obtained, and then effects of opening angle and depth on the mechanical and electrical damages ahead of a piezoelectric notch are investigated with finite element method. It is shown from the numerical results that the opening angle has little effect on the mechanical damage and hardly changes the sizes of the mechanical and elect rical damage regions, but the notch depth has obvious influence on the damage level and the size of the electrical damage regions.
Keywords: mechanical and electrical damages, extended plane stress problems, finite element method,  V-shaped notch.