Snap-through path in a bistable dielectric elastomer actuator

doi:10.1007/s10483-022-2888-6

Applied Mathematics and Mechanics (English Edition) ›› 2022, Vol. 43 ›› Issue (8): 1159-1170.doi: https://doi.org/10.1007/s10483-022-2888-6

Snap-through path in a bistable dielectric elastomer actuator

Wenjie SUN^1,2, Wentao MA³, Fei ZHANG¹, Wei HONG⁴, Bo LI³

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 518055, Guangdong Province, China

收稿日期:2022-02-22 修回日期:2022-04-30 发布日期:2022-07-27
通讯作者: Bo LI, E-mail: liboxjtu@xjtu.edu.cn
基金资助:
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), and the State Key Laboratory for Strength and Vibration of Mechanical Structures of China (No. SV2018-KF-08)

Snap-through path in a bistable dielectric elastomer actuator

Wenjie SUN^1,2, Wentao MA³, Fei ZHANG¹, Wei HONG⁴, Bo LI³

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 518055, Guangdong Province, China

Received:2022-02-22 Revised:2022-04-30 Published:2022-07-27
Contact: Bo LI, E-mail: liboxjtu@xjtu.edu.cn
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), and the State Key Laboratory for Strength and Vibration of Mechanical Structures of China (No. SV2018-KF-08)

摘要/Abstract

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

Abstract: 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.

Key words: dielectric elastomer actuator (DEA), snap-through, bistable, finite element method (FEM), strain-stiffening behavior

中图分类号:

74H45
65P40

Wenjie SUN, Wentao MA, Fei ZHANG, Wei HONG, Bo LI. Snap-through path in a bistable dielectric elastomer actuator[J]. Applied Mathematics and Mechanics (English Edition), 2022, 43(8): 1159-1170.

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Snap-through path in a bistable dielectric elastomer actuator

Snap-through path in a bistable dielectric elastomer actuator

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