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Acta Mechanica Solida Sinica

, Volume 30, Issue 4, pp 374–389 | Cite as

A 3D multi-field element for simulating the electromechanical coupling behavior of dielectric elastomers

  • Jun Liu
  • Choon Chiang Foo
  • Zhi-Qian Zhang
Article

Abstract

We propose a multi-field implicit finite element method for analyzing the electromechanical behavior of dielectric elastomers. This method is based on a four-field variational principle, which includes displacement and electric potential for the electromechanical coupling analysis, and additional independent fields to address the incompressible constraint of the hyperelastic material. Linearization of the variational form and finite element discretization are adopted for the numerical implementation. A general FEM program framework is developed using C++ based on the open-source finite element library deal.II to implement this proposed algorithm. Numerical examples demonstrate the accuracy, convergence properties, mesh-independence properties, and scalability of this method. We also use the method for eigenvalue analysis of a dielectric elastomer actuator subject to electromechanical loadings. Our finite element implementation is available as an online supplementary material.

Keywords

Dielectric elastomer Electromechanical coupling Implicit multi-field finite element method Eigenvalue problem 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2017

Authors and Affiliations

  1. 1.Institute of High Performance ComputingA* STARSingapore

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