The Rayleigh-Lamb wave propagation in dielectric elastomer layers subjected to large deformations

Details The Rayleigh-Lamb wave propagation in dielectric elastomer layers subjected to large deformations The Rayleigh-Lamb wave propagation in dielectric elastomer layers subjected to large deformations

2011-06-26

arxiv.org/abs/1106.5215v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1016/j.ijnonlinmec.2011.06.01

The propagation of waves in soft dielectric elastomer layers is investigated. To this end incremental motions superimposed on homogeneous finite deformations induced by bias electric fields and pre-stretch are determined. First we examine the case of mechanically traction-free layer, which is an extension of the Rayleigh-Lamb problem in the purely elastic case. Two other loading configurations are accounted for too. Subsequently, numerical examples for the dispersion relations are evaluated for a dielectric solid governed by an augmented neo-Hookean strain energy. It is found that the the phase speeds and frequencies strongly depend on the electric excitation and pre-stretch. These findings lend themselves at the possibility of controlling the propagation velocity as well as filtering particular frequencies with suitable choices of the electric bias field.

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