Effects of surface impedance on current density in a piezoelectric resonator for impedance distribution sensing

作     者：Jing LIU Jianke DU Ji WANG Jiashi YANG Jing LIU;Jianke DU;Ji WANG;Jiashi YANG

作者机构：Piezoelectric Device LaboratorySchool of Mechanical Engineering and MechanicsNingbo UniversityNingbo 315211Zhejiang ProvinceChina School of Digital Technology and EngineeringNingbo University of Finance and EconomicsNingbo 315175Zhejiang ProvinceChina Department of Mechanical and Materials EngineeringUniversity of Nebraska-LincolnLincolnNE 68588-0526U.S.A. 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2021年第42卷第5期

页      面：677-688页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.11672141,11972199) the Special Research Funding from the Marine Biotechnology and Marine Engineering Discipline Group in Ningbo University the K.C.Wong Magana Fund through Ningbo University 

主　　题：piezoelectric resonator sensor plate 

摘      要：We study the relationship between the surface mechanical load represented by distributed acoustic impedance and the current density distribution in a shear mode piezoelectric plate acoustic wave resonator.A theoretical analysis based on the theory of piezoelectricity and trigonometric series is *** the specific and basic case when the surface load is due to a local mass layer,numerical results show that the current density concentrates under the mass layer and is sensitive to the physical as well as geometric parameters of the mass layer such as its location and *** provides the theoretical foundation for predicting the surface impedance pattern from the current density distribution,which is fundamental to the relevant acoustic wave sensors.