Transverse Strain Response of Silicone Dielectric Elastomer Actuators

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Authors
  1. Szabo, J.P.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
A strain measurement system based on the Zygo Doppler laser interferometer has been used to study the static and dynamic transverse strain response of Maxwell stress actuators made from Dow Corning HSIII silicone films over a wide displacement range and at frequencies from DC to 100 Hz. The time dependence of the strain response has been investigated. The effect of a mechanical tensile pre-load or pre-strain on the transverse strain has been studied. There is an initial increase in the strain due to pre-load but the transverse strains decrease when larger pre-loads are applied. Geometric effects are shown to be important and models of hyperelasticity that are capable of describing the large deformations of polymer materials have been used to interpret our results. A finite element simulation using a hyperelastic model provides good agreement with most of our observations on the electric field and pre-load dependencies of the transverse strain.

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Keywords
Zygo Doppler;interferometer;Dow Corning HSIII;silicone films;hyperelastic
Report Number
DRDC-ATLANTIC-SL-2005-103 — Scientific Literature
Date of publication
09 Jun 2005
Number of Pages
8
DSTKIM No
CA026653
CANDIS No
524546
Format(s):
Electronic Document(PDF)

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