Effect of viscoelastic relaxation on the electromechanical coupling of dielectric elastomer

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Abstract

Dielectric elastomer is able to produce a large electromechanical deformation which is time-dependent and unstable due to the visco-hyper- elasticity. In the current study, we use a thermodynamic model to characterize the viscoelastic relaxation in the electromechanical deformation and instability of a viscoelastic dielectric. The parameters in the model were verified experimentally. We investigate the time-dependent mechanical deformation, electrical breakdown strength, polarization, and the electromechanical stability which are coupled by viscoelastic relaxation. The results show the electromechanical stability has strong time-dependence, due to the stress relaxation when the pre-stretch is applied.

Original languageEnglish
Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) 2013
DOIs
StatePublished - 2013
EventSPIE Electroactive Polymers Actuators and Devices Conference, EAPAD 2013 - San Diego, CA, United States
Duration: 11 Mar 201314 Mar 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8687
ISSN (Print)0277-786X

Conference

ConferenceSPIE Electroactive Polymers Actuators and Devices Conference, EAPAD 2013
Country/TerritoryUnited States
CitySan Diego, CA
Period11/03/1314/03/13

Keywords

  • Dielectric elastomer
  • Electromechanical coupling
  • Instability
  • Viscoelastic relaxation

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