Resonant behavior of a membrane of a dielectric elastomer

被引：243

作者：

Zhu, Jian ^{[1
]}

Cai, Shengqiang ^{[1
]}

Suo, Zhigang ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2010年 / 47卷 / 24期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

Dielectric elastomer actuator; Large deformation; Nonlinear dynamics; Membrane; PERFORMANCE; FREQUENCY; MODEL;

D O I：

10.1016/j.ijsolstr.2010.08.008

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper analyzes a membrane of a dielectric elastomer, prestretched and mounted on a rigid circular ring, and then inflated by a combination of pressure and voltage. Equations of motion are derived from a nonlinear field theory, and used to analyze several experimental conditions. When the pressure and voltage are static, the membrane may attain a state of equilibrium, around which the membrane can oscillate. The natural frequencies can be tuned by varying the prestretch, pressure, or voltage. A sinusoidal pressure or voltage may excite superharmonic, harmonic, and subharmonic resonance. Several modes of oscillation predicted by the model have not been reported experimentally, possibly because these modes have small deflections, despite large stretches. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3254 / 3262

页数：9

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