Computational Model of Hydrostatically Coupled Dielectric Elastomer Actuators

2012 ◽  
Vol 79 (3) ◽  
Author(s):  
Huiming Wang ◽  
Shengqiang Cai ◽  
Federico Carpi ◽  
Zhigang Suo
Keyword(s):  
Experimental Data ◽  
Computational Model ◽  
Nonlinear Behavior ◽  
Dielectric Elastomer ◽  
Axisymmetric Deformation ◽  
Flat Punch ◽  
Dielectric Elastomer Actuators ◽  
Circular Rings ◽  
Ideal Dielectric ◽  
Computational Predictions

A hydrostatically coupled dielectric elastomer (HCDE) actuator consists of two membranes of a dielectric elastomer, clamped with rigid circular rings. Confined between the membranes is a fixed volume of a fluid, which couples the movements of the two membranes when a voltage or a force is applied. This paper presents a computational model of the actuator, assuming that the membranes are neo-Hookean, capable of large and axisymmetric deformation. The voltage-induced deformation is described by the model of ideal dielectric elastomer. The force is applied by pressing a rigid flat punch onto one of the membranes over an area of contact. The computational predictions agree well with experimental data. The model can be used to explore nonlinear behavior of the HCDE actuators.

Modelling and Experimental Validation of Buckling Dielectric Elastomer Actuators

2011 ◽  
Author(s):  
Rocco Vertechy ◽  
Antonio Frisoli ◽  
Massimo Bergamasco ◽  
Federico Carpi ◽  
Gabriele Frediani ◽  
...  
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Experimental Validation ◽  
Element Model ◽  
Mechanical Analysis ◽  
Dielectric Elastomer ◽  
Elastic Instability ◽  
Dielectric Elastomer Actuators ◽  
Out Of Plane ◽  
Rubbery Material

Buckling dielectric elastomer actuators are special type of electro-mechanical transducers that exploit electro-elastic instability phenomena to generate large out-of-plane axial-symmetric deformations of circular membranes made of non-conductive rubbery material. In this paper a simplified explicit analytical model and a monolithic finite element model are described for the coupled electro-mechanical analysis and simulation of buckling dielectric elastomer membranes which undergo large electrically induced displacements. Experimental data are also reported which validate the developed models.

High Breakdown Field Dielectric Elastomer Actuators Using Encapsulated Polyaniline as High Dielectric Constant Filler

2010 ◽  
Vol 20 (19) ◽  
pp. 3280-3291 ◽  
Author(s):  
Martin Molberg ◽  
Daniel Crespy ◽  
Patrick Rupper ◽  
Frank Nüesch ◽  
Jan-Anders E. Månson ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Dielectric Elastomer ◽  
Breakdown Field ◽  
Dielectric Elastomer Actuators ◽  
High Dielectric

Combined driving and sensing circuitry for dielectric elastomer actuators in mobile applications

2011 ◽  
Author(s):  
Marc Matysek ◽  
Henry Haus ◽  
Holger Moessinger ◽  
Dirk Brokken ◽  
Peter Lotz ◽  
...  
Keyword(s):  
Mobile Applications ◽  
Dielectric Elastomer ◽  
Dielectric Elastomer Actuators
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