Analysis on vibration characteristics of large-size rectangular piezoelectric composite plate based on quasi-periodic phononic crystal structure

作     者：胡理情 王莎 林书玉 Li-Qing Hu;Sha Wang;Shu-Yu Lin

作者机构：Shaanxi Key Laboratory of UltrasonicsInstitute of Applied AcousticsShaanxi Normal UniversityXi’an 710119China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第5期

页      面：438-447页

核心收录：

学科分类：12[管理学] 07[理学] 08[工学] 070205[理学-凝聚态物理] 083002[工学-环境工程] 1204[管理学-公共管理] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0837[工学-安全科学与工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11674206,11874253,and12174240) the Fundamental Research Funds for the Central Universities,China(Grant No.020CBLY003) 

主　　题：composite materials rectangular piezoelectric plate coupled vibration band gap 

摘      要：Based on the theory of composite materials and phononic crystals(PCs),a large-size rectangular piezoelectric composite plate with the quasi-periodic PC structure composed of PZT-4 and epoxy is proposed in this *** PC structure can suppress the transverse vibration of the piezoelectric composite plate so that the thickness mode is purer and the thickness vibration amplitude is more ***,the vibration of the model is analyzed theoretically,the electromechanical equivalent circuit diagram of three-dimensional coupled vibration is established,and the resonance frequency equation is *** effects of the length,width,and thickness of the piezoelectric composite plate at the resonant frequency are obtained by the analytical method and the finite element method,the effective electromechanical coupling coefficient is also *** results show that the resonant frequency can be changed regularly and the electromechanical conversion can be improved by adjusting the size of the rectangular piezoelectric *** effect of the volume fraction of the scatterer on the resonant frequency in the thickness direction is studied by the finite element *** band gap in X and Y directions of large-size rectangular piezoelectric plate with quasi-periodic PC structures are *** results show that the theoretical results are in good agreement with the simulation *** the resonance frequency is in the band gap,the decoupling phenomenon occurs,and then the vibration mode in the thickness direction is purer.