Analysis of the Novel Strain Responsive Actuators of Silicone Dielectric Elastomer

Abstract

The acrylic acid and silicone are common dielectric elastomer materials. These actuators have shown excellent activate properties including large strains up to 380% and high energy densities up to 3.4 J/g, high efficiency, high responsive speed , good reliability and durability, etc. When a voltage is applied on the compliant electrodes of the dielectric elastomers, the polymer shrinks along with the electric field and expands in the plain area which erects the orientation of the line. In this paper, we synthesize a novel silicone dielectric elastomer with high dielectric constant, large strain and high force output. Pre-strain and certain driving electric field are applied on the novel silicone film, respectively. The strain responsing to the Maxwell stress is measured. Using the large deformation theory of finite element method to simulate the deformable behavior of materials, the simulation results agree with the experiment. The coupling effect of the mechanics and electric fields applied on the electrode of the dielectric elastomers is inverstigated. The finite element simulation of large deformation theory can be used to describe the dielectric elastomers materials large deformation that induced by the static electric field.

Effect of mechanical force field on the electromechanical stability of dielectric elastomers

“…Recent years have seen extensive and in-depth studies of the stability analysis of dielectric elastomer . When a voltage is applied on the dielectric elastomer film, the voltage will cause the film to become thinner [6][7][8][9][10][11][12][13][14][15][16][29][30][31][32][33][34][35][36][37][38]. As a result, the same voltage will induce a higher electric field and further cause the dielectric elastomer film to become thinner.…”

Fiber-reinforced dielectric elastomer laminates with integrated function of actuating and sensing

“…A DE membrane expands its area and reduces its thickness when an electric field is applied through its thickness direction. This property of DE has been widely studied into various application including actuators, sensors and generators [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Specially, basing on the fact that electric properties such as resistance, capacitance change in accordance with the external forces, the ability to sense its position, deformation or force of dielectric elastomer has also been investigated [16][17][18][19].…”

The area of allowable states in Mooney-Rivlin type dielectric elastomer generators

“…Dielectric elastomer(DE) are suitable in applications of energy generators, which has been verified by experiments and publications [1][2][3][4][5][6][7][8][9][10]. The function principle of DE generator is inverse process of DE actuator.…”