A nonlinear analysis of surface acoustic waves in isotropic elastic solids

作     者：Haoxiang Wu Rongxing Wu Tingfeng Ma Zixiao Lu Honglang Li Ji Wang Haoxiang Wu;Rongxing Wu;Tingfeng Ma;Zixiao Lu;Honglang Li;Ji Wang

作者机构：Piezoelectric Device LaboratorySchool of Mechanical Engineering&MechanicsNingbo UniversityNingbo 315211China National Center for Nanoscience and TechnologyBeijing 100190China 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2022年第12卷第2期

页      面：98-103页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(Grant 11672142) Additional supports are from the Technology Innovation 2025 Program(Grant 2019B10122) the Municipality of Ningbo,Research and Development Program of Key Disciplines of Guangdong Province(Grant 2020B0101040002) Research and Development Program in Key Disciplines of Hunan Province(Grant 2019GK2111) 

主　　题：Surface Wave Nonlinear Galerkin Resonator 

摘      要：With the fast evolution of wireless and networking communication technology,applications of surface acoustic wave(SAW),or Rayleigh wave,resonators are proliferating with fast shrinking sizes and increasing *** is inevitable that the smaller resonators will be under a strong electric field with induced large deformation,which has to be described in wave propagation equations with the consideration of *** this study,the formal nonlinear equations of motion are constructed by introducing the nonlinear constitutive relation and strain components in a standard procedure,and the equations are simplified by the extended Galerkin method through the elimination of *** wave velocity of the nonlinear SAW is obtained from approximated nonlinear equations and boundary conditions through a rigorous solution *** is shown that if the amplitude is small enough,the nonlinear results are consistent with the linear results,demonstrating an alternative procedure for nonlinear analysis of SAW devices working in nonlinear state.