3D Finite Element Analyses of Multilayer Dielectric Elastomer Actuators with Metallic Compliant Electrodes for Space Applications

A special actuator device with passive sensing capability based on dielectric elastomer was studied and specialized to be used in space applications. The work illustrates the research project modeling procedure adopted to simulate the mechanical behavior of this material based on a finite-element theory approach. The Mooney-Rivlin’s hyperelastic and Maxwell’s electrostatic models provide the theoretical basis to describe its electromechanic behavior. The validation of the procedure is performed through a numerical—experimental correlation between the response of a prototype of actuator developed by the Risø Danish research center and the 3D finite-element model simulations. An investigation concerning a possible application in the space environment of dielectric elastomer actuators is also presented.