FINITE ELEMENT MODEL OF FLEXOELECTRIC RESPONCE WITH MICRO SCALE EFFECT BASED ON A MODIFIED COUPLE STRESS THEORY

被引：0

作者：

Li, X. J. ^{[1
]}

Sun, J. ^{[2
]}

Pu, M. L. ^{[2
]}

Zhou, A. ^{[3
]}

机构：

[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Jiangsu Vocat Coll Agr & Forestry, Sch Informat Engn, Jurong 212499, Peoples R China

[3] Jiangsu Univ, Sch Civil Engn & Mech, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

PROCEEDINGS OF THE 2020 15TH SYMPOSIUM ON PIEZOELECTRCITY, ACOUSTIC WAVES AND DEVICE APPLICATIONS (SPAWDA) | 2021年

关键词：

Piezoelectricity; Flexoelectricity; Mixed finite element method; Modified couple stress theory;

D O I：

10.1109/SPAWDA51471.2020.9445446

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Compared with piezoelectricity, flexoelectric effect has a significant size sensitivity because the proportional relationship between external flexoelectric polarization and internal strain gradient. Usually in micro scale or nano scale, flexoelectric effect in dielectric solids can magnify better electromechanical couple performance than piezoelectric effect. At present, plentiful research focuses on the theoretical modelling of the flexoelectric materials and its micro or nano structures. However, the research on numerical modeling of flexoelectric responce with micro scale effect is much fewer. Therefore, the finite element modelling of flexoelectric response in micro scale is of great meaning and necessary. In this study, a finite element model of flexoelectric responce with micro scale effect based on a modified couple stress theory is proposed. And a cantilever beam of flexoelectric materials in micro scale is investigated for validation.

引用

页码：98 / 102

页数：5

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