Snap-through path in a bistable dielectric elastomer actuator  

作　　者：Wenjie SUN Wentao MA Fei ZHANG Wei HONG Bo LI 

机构地区：[1]School of Mechanical and Precision Instrument Engineering,Xi’an University of Technology,Xi’an,710048,China [2]State Key Laboratory for Strength and Vibration of Mechanical Structures and School of Aerospace,Xi’an Jiaotong University,Xi’an,710049,China [3]State Key Laboratory for Manufacturing System Engineering,Shaanxi Key Lab for Intelligent Robots,School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an,710049,China [4]Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,Guangdong Province,518055,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2022年第8期1159-1170,共12页应用数学和力学（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(No.2019YFB1311600);the National Natural Science Foundation of China(Nos.11902248 and 52075411);the Shaanxi Key Research and Development Program of China(No.2020ZDLGY06-11);the State Key Laboratory for Strength and Vibration of Mechanical Structures of China(No.SV2018-KF-08)。

摘　　要：The dielectric elastomer(DE)has attracted significant attention due to its desired features,including large deformation,fast response,and high energy density.However,for a DE actuator(DEA)utilizing a snap-through deformation mode,most existing theoretical models fail to predict its deformation path.This paper develops a new finite element method(FEM)based on the three-parameter Gent-Gent model suitable for capturing strain-stiffening behaviors.The simulation results are verified by experiments,indicating that the FEM can accurately characterize the snap-through path of a DE.The method proposed in this paper provides theoretical guidance and inspiration for designing and applying DEs and bistable electroactive actuators.

关 键 词：dielectric elastomer actuator(DEA) SNAP-THROUGH BISTABLE finite element method(FEM) strain-stiffening behavior 

分 类 号：O322[理学—一般力学与力学基础] O326[理学—力学]