[1] Zhang Hui, Dai Min, Zhang Zhisheng, Xia Zhijie, et al. Analytical models for circular and spherical dielectric elastomers [J]. Journal of Southeast University (English Edition), 2019, 35 (3): 288-291. [doi:10.3969/j.issn.1003-7985.2019.03.003]

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Analytical models for circular and spherical dielectric elastomers()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

35

Issue:

2019 3

Page:

288-291

Research Field:

Mechanical Engineering

Publishing date:

2019-09-30

Info

Title:

Analytical models for circular and spherical dielectric elastomers

Author(s):

Zhang Hui;  Dai Min;  Zhang Zhisheng;  Xia Zhijie

School of Mechanical Engineering, Southeast University, Nanjing 211189, China

Keywords:

dielectric elastomer;  circular frame;  balloon actuator;  large deformation;  phase transition

PACS:

TH134

DOI:

10.3969/j.issn.1003-7985.2019.03.003

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.

References:

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Memo

Memo:

Biographies: Zhang Hui(1987—), female, doctor, assistant researcher; Zhang Zhisheng(corresponding author), male, doctor, professor, oldbc@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51775108).
Citation: Zhang Hui, Dai Min, Zhang Zhisheng, et al.Analytical models for circular and spherical dielectric elastomers[J].Journal of Southeast University(English Edition), 2019, 35(3):288-291.DOI:10.3969/j.issn.1003-7985.2019.03.003.

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