Effect of viscoelastic relaxation on the electromechanical coupling of dielectric elastomer

Bo Li; Hualing Chen; Junhua Qiang; Junjie Sheng; Jinxiong Zhou

doi:10.1117/12.2009322

9 April 2013 Effect of viscoelastic relaxation on the electromechanical coupling of dielectric elastomer

Bo Li, Hualing Chen, Junhua Qiang, Junjie Sheng, Jinxiong Zhou

Proceedings Volume 8687, Electroactive Polymer Actuators and Devices (EAPAD) 2013; 86872T (2013) https://doi.org/10.1117/12.2009322
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

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.

Citation Download Citation

Bo Li, Hualing Chen, Junhua Qiang, Junjie Sheng, and Jinxiong Zhou "Effect of viscoelastic relaxation on the electromechanical coupling of dielectric elastomer", Proc. SPIE 8687, Electroactive Polymer Actuators and Devices (EAPAD) 2013, 86872T (9 April 2013); https://doi.org/10.1117/12.2009322

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