Electrostatic-viscoelastic finite element model of dielectric actuators

Schlögl T, Leyendecker S (2015)


Publication Language: English

Publication Type: Journal article, Review article

Publication year: 2015

Journal

Publisher: Elsevier

Edited Volumes: Computer Methods in Applied Mechanics and Engineering

Book Volume: 299

Pages Range: 421-439

URI: http://www.sciencedirect.com/science/article/pii/S0045782515003461

DOI: 10.1016/j.cma.2015.10.017

Abstract

The aim of this work is to set up a numerical framework to characterise the deformation process and effective forces when voltage is applied to dielectric elastomer actuators. Based on an existing model for non-linear electro-elasticity that covers the static case only, inertia terms are included in order to obtain a description of the deformation process depending on time. A potential energy function that is composed of Neo-Hooke material behaviour, electric field energy and coupling terms covers the material properties. Combined with the kinetic energy, a Lagrange function forms the basis in a variational setting of the model. Viscoelastic effects are included using non-conservative forces and account for time dependent strains. The action is approximated using quadrature rules and discretising with finite elements in space. A discrete version of Hamilton’s principle leads to a structure preserving integration scheme for DEAs. The integration scheme is implemented as C++ code and applied to various examples.

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APA:

Schlögl, T., & Leyendecker, S. (2015). Electrostatic-viscoelastic finite element model of dielectric actuators. Computer Methods in Applied Mechanics and Engineering, 299, 421-439. https://dx.doi.org/10.1016/j.cma.2015.10.017

MLA:

Schlögl, Tristan, and Sigrid Leyendecker. "Electrostatic-viscoelastic finite element model of dielectric actuators." Computer Methods in Applied Mechanics and Engineering 299 (2015): 421-439.

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