Electromechanical deformation of dielectric elastomer in two types of pre-stretch

被引：14
|
作者：
Li, Bo [1 ,2 ]
Zhao, Zijie [3 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Mech Engn, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
[3] Northwestern Polytech Univ, Natl Key Lab Aerodynam Design & Res, Xian 710072, Peoples R China
来源：
EPL | 2014年 / 106卷 / 06期
基金：
国家教育部博士点专项基金资助; 国家自然科学基金重大项目;
关键词：
STRAIN;
D O I：
10.1209/0295-5075/106/67009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A pre-stretched dielectric elastomer is capable of large deformation, when subject to voltage. This paper investigates the effect of two types of pre-stretch: by strain and by stress. The difference is compared and discussed using thermodynamics models. The significance of the pre-stretch in actuation is explained by examining the true stress in actuation. Under both pre-stretch strategies, during the actuation, the dielectric elastomer exhibits hysteresis loops due to snap-through but differs in shape and physical quantity. With pre-stretch by strain, the dielectric elastomer features a discontinuous snap in stretch while with the stress the voltage snaps. Copyright (C) EPLA, 2014
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页数：4
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