Electrostatic model of dielectric elastomer generator based on finite element

Jianbo Cao,E. Shiju,Tianfeng Zhao,Zhao Gao,Gangqiang Lu,Wenjun Xia

doi:10.1038/s41598-021-93486-0

Jianbo Cao, E. Shiju + Show 4 more

Open Access

https://doi.org/10.1038/s41598-021-93486-0

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Journal: Scientific Reports	Publication Date: Jul 20, 2021
Citations: 3	License type: open-access

Affiliation: Jiaxing University, Zhejiang Normal University

Abstract

When dielectric elastomer materials are used for power generation, bias voltage is applied at both ends of dielectric elastomer film, and there are equal amounts of heterogeneous charges on both sides of the film, so Maxwell electrostatic force is always coupled in the process of power generation. In order to investigate the distribution of Maxwell stress in dielectric elastomer material under electric field, the electrostatic model of dielectric elastomer generator is established in COMSOL finite element simulation software environment in this paper. The distribution of electrostatic force is studied from two aspects of theoretical derivation and simulation, and the magnitude and direction of electrostatic force are determined. The simulation results show that the Maxwell electrostatic force can be equivalent to the tensile force along the film plane and the extrusion force perpendicular to the plane, and they are the same.

Highlights

When dielectric elastomer materials are used for power generation, bias voltage is applied at both ends of dielectric elastomer film, and there are equal amounts of heterogeneous charges on both sides of the film, so Maxwell electrostatic force is always coupled in the process of power generation
When applied in the field of power generation, bias voltage is applied at both ends of the film, and the same amount of heterogeneous charges are accumulated on both sides of the film, so Maxwell electrostatic force is always coupled in the process of power generation, which affects the electromechanical characteristics of D EG15–18
In order to investigate the distribution of Maxwell stress in dielectric elastomer materials under electric field during power g eneration[19,20], the electrostatic model of dielectric elastomer materials was established in COMSOL finite element simulation software environment based on theoretical deduction

Summary

Introduction

When dielectric elastomer materials are used for power generation, bias voltage is applied at both ends of dielectric elastomer film, and there are equal amounts of heterogeneous charges on both sides of the film, so Maxwell electrostatic force is always coupled in the process of power generation. Applying voltage to the upper and lower electrodes of the film, the upper and lower electrodes accumulate equal charges with opposite polarities, which results in Maxwell electrostatic force driving film deformation. When applied in the field of power generation, bias voltage is applied at both ends of the film, and the same amount of heterogeneous charges are accumulated on both sides of the film, so Maxwell electrostatic force is always coupled in the process of power generation, which affects the electromechanical characteristics of D EG15–18.

Results

Conclusion