Electrostatic-viscoelastic finite element model of dielectric actuators

Journal article
(Review article)


Publication Details

Author(s): Schlögl T, Leyendecker S
Editor(s): Elsevier
Title edited volumes: Computer Methods in Applied Mechanics and Engineering
Journal: Computer Methods in Applied Mechanics and Engineering
Publisher: Elsevier
Publication year: 2015
Volume: 299
Pages range: 421-439
ISSN: 0045-7825
Language: English


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.



FAU Authors / FAU Editors

Leyendecker, Sigrid Prof. Dr.-Ing.
Chair of Applied Dynamics
Schlögl, Tristan
Chair of Applied Dynamics


How to cite

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.

BibTeX: 

Last updated on 2018-10-08 at 03:42