Electromechanical stability of dielectric elastomer composites with enhanced permittivity

被引：22
|
作者：
Li, Bo [1 ,2 ]
Chen, Hualing [1 ,2 ]
Zhou, Jinxiong [1 ,3 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2013年 / 52卷
基金：
中国国家自然科学基金;
关键词：
Ceramic-matrix composites; Smart material; Physical properties; Mechanical properties; ACTUATION; POLARIZATION; POLYMER; INSTABILITY; TRANSITION; MATRIX; ENERGY;
D O I：
10.1016/j.compositesa.2012.11.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dielectric elastomers when doped with high permittivity fillers, such as ceramic particles, achieve enhanced dielectric properties, which lower the voltage required for actuation. A thermodynamic model is proposed which investigates the electromechanical deformation and stability in these dielectric elastomer composites. The process of electromechanical coupling is analyzed with particular emphasis on the saturated polarization of the ceramic fillers, which modifies the instability due to electrostriction. The stability characteristics are studied using established principles, and provide information for achieving the goal of high performance stretchable dielectric actuators. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：55 / 61
页数：7
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