Thermal and strain-stiffening effects on the electromechanical breakdown strength of dielectric elastomers

被引：32
|
作者：
Liu, Lei [1 ,2 ]
Chen, Hualing [1 ,2 ]
Li, Bo [1 ,2 ]
Wang, Yanjie [1 ,2 ]
Li, Dichen [2 ]
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
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ACTUATORS; RUBBER;
D O I：
10.1063/1.4928712
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The electromechanical breakdown strength determines the limit of a dielectric elastomer for its use in actuators and energy harvesters. We investigated experimentally and theoretically the thermal and strain-stiffening effects on the electromechanical breakdown strength. The stain-stiffening induced by large stretch highly enhance the maximum energy density and breakdown strength. A temperature dependence of breakdown strength is consistent with the electromechanical breakdown model by taking into account of the strain-stiffness effect of dielectric elastomer. Furthermore, the stain-stiffening also increases the thermal sensitivity of breakdown strength. (C) 2015 AIP Publishing LLC.
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页数：5
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