Rational design of piezoelectric metamaterials with tailored electro-momentum coupling

被引：12

作者：

Zhang, Zhizhou ^{[1
]}

Lee, Jeong-Ho ^{[1
]}

Gu, Grace X. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

来源：

EXTREME MECHANICS LETTERS | 2022年 / 55卷

基金：

美国国家科学基金会;

关键词：

Elastic wave theory; Metamaterials; Electro-momentum coupling; Constitutive homogenization; Piezoelectric materials; Theoretical mechanics; HOMOGENIZATION; WAVES;

D O I：

10.1016/j.eml.2022.101785

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Piezoelectric materials have wide sensing and energy transduction applications due to their inherent coupling of mechanical deformation and electric field. Recent discoveries have revealed that asymmetric or heterogeneous microstructures of piezoelectric composites can create an additional coupling of macroscopic momentum to an electric field termed electro-momentum coupling, introducing a new degree of design freedom. In this work, by employing the homogenization scheme, the physical origin of electro-momentum coupling is explored by a high throughput sweep over the microstructure design space of a piezoelectric composite system. This study shows how material constituent properties and geometrical arrangements can affect electro-momentum coupling and be smartly tailored for applications of interest. (c) 2022 Elsevier Ltd. All rights reserved.

引用

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