东南大学学报（英文版）2019，Vol.35Issue(3)：288-291,4.DOI:10.3969/j.issn.1003-7985.2019.03.003
圆形和球形结构介电弹性体的解析模型
Analytical models for circular and spherical dielectric elastomers
摘要
Abstract
In order to imitate skin characteristics,a dielectric elastomer (DE) membrane coated with flexible electrodes is applied with high voltage,which can lead to wrinkles and other phenomena.To develop soft-actuated air vehicles and other equipment,lightweight gas is pumped into a DE spherical shell to generate controllable flight movements.According to experimental phenomena and data,the calculation models of phase transitions on circular DE films are built.Meanwhile,the deformation characteristics of different DE (acrylic polymer and rubber) spherical actuators combined with helium are compared.The peak pressure inside a rubber balloon is greater than that of a VHB (acrylic polymer)balloon shell,but the limit stretch of rubber is much smaller.By taking advantages of this phenomenon,large deformations of a VHB spherical shell can be realized at an actuated state.Moreover,multi-layer spherical DE shells can achieve larger voltage-induced volume change than monolayer ones.The research indicates that pre-stretching is one of the key factors to induce phase transitions between flat,wrinkled and bulging regions on circular DE films,and the internal pressure determines the electromechanical performance of balloon actuators.关键词
介电弹性体/圆形框架/球体驱动器/大变形/相变转换Key words
dielectric elastomer/circular frame/balloon actuator/large deformation/phase transition分类
机械制造引用本文复制引用
张慧,戴敏,张志胜,夏志杰..圆形和球形结构介电弹性体的解析模型[J].东南大学学报（英文版）,2019,35(3):288-291,4.基金项目
The National Natural Science Foundation of China(No.51775108). （No.51775108）
