Analysis of the electromechanical responses of sandwich circular nano-plate based on flexoelectric nano-ultrasonic transducer

被引：1
作者：
Zhou, Shasha [1 ,2 ]
Qi, Lu [3 ]
Zhang, Rongmin [1 ,2 ]
Li, Anqing [1 ,2 ]
Ren, Fei [1 ,2 ]
Zheng, Zumei [1 ,2 ]
Qiao, Jinwei [1 ,2 ]
Sun, Yujing [1 ,2 ]
Zhou, Shenjie [4 ]
机构：
[1] Qilu Univ Technol, Shandong Acad Sci, Sch Mech Engn, Daxue Rd 3501, Jinan 250353, Peoples R China
[2] Shandong Inst Mech Design & Res, Jinan 250031, Peoples R China
[3] Shenzhen Univ, Coll Phys & Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ, Shenzhen 518060, Peoples R China
[4] Shandong Univ, Sch Mech Engn, Jingshi Rd 17923, Jinan 250061, Peoples R China
来源：
APPLIED MATHEMATICAL MODELLING | 2025年 / 137卷
基金：
中国国家自然科学基金;
关键词：
Flexoelectric ultrasonic transducer; Flexoelectricity effect; Sandwich circular nano-plate; VIBRATION; MODEL;
D O I：
10.1016/j.apm.2024.115697
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Flexoelectric nano-ultrasonic transducer is an important development direction of ultra-high frequency ultrasonic transducers. The key to its development lies in addressing the electromechanical coupling dynamics of a flexoelectric nano-element, that is, sandwich circular nano-plate. In this paper, a novel dynamic theoretical model of sandwich circular nano-plate is developed based on the transversely isotropic flexoelectricity couple stress and Kirchhoff plate theories. Based on the novel model, this study demonstrates the influence of flexoelectricity effect and size effect on its electromechanical responses of the core component in the nano-ultrasonic transducer. Simultaneously, using finite element software, the paper presents the first six mode shapes of the structure and reveals the mode shape most conducive to the energy conversion of the transducer. The main objective of this study is to provide a theoretical foundation for the development of nano-ultrasonic transducers based on flexoelectric materials. The novel model can also be applied in various energy conversion devices, including flexoelectric actuator and flexoelectric energy harvesters.
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页数：22
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