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Proceedings Paper

Finite element analysis of multilayer DEAP stack-actuators
Author(s): Stefan Kuhring; Dominik Uhlenbusch; Thorben Hoffstadt; Jürgen Maas
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Paper Abstract

Dielectric elastomers (DE) are thin polymer films belonging to the class of electroactive polymers (EAP). They are coated with compliant and conductive electrodes on each side, which make them performing a relative high amount of deformation with considerable force generation under the influence of an electric field. Because the realization of high electric fields with a limited voltage level requests single layer polymer films to be very thin, novel multilayer actuators are utilized to increase the absolute displacement and force. In case of a multilayer stack-actuator, many actuator films are mechanically stacked in series and electrically connected in parallel. Because there are different ways to design such a stack-actuator, this contribution considers an optimization of some design parameters using the finite element analysis (FEA), whereby the behavior and the actuation of a multilayer dielectric electroactive polymer (DEAP) stack-actuator can be improved. To describe the material behavior, first different material models are compared and necessary material parameters are identified by experiments. Furthermore, a FEA model of a DEAP film is presented, which is expanded to a multilayer DEAP stack-actuator model. Finally, the results of the FEA are discussed and conclusions for design rules of optimized stack-actuators are outlined.

Paper Details

Date Published: 1 April 2015
PDF: 13 pages
Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 94301L (1 April 2015); doi: 10.1117/12.2085121
Show Author Affiliations
Stefan Kuhring, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Dominik Uhlenbusch, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Thorben Hoffstadt, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)
Jürgen Maas, Ostwestfalen-Lippe Univ. of Applied Sciences (Germany)

Published in SPIE Proceedings Vol. 9430:
Electroactive Polymer Actuators and Devices (EAPAD) 2015
Yoseph Bar-Cohen, Editor(s)

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