Temperature Influence on the Viscoelastic Electromechanical Deformation of Dielectric Elastomer

Abstract:

Temperature can significantly affect the performance of a viscoelastic dielectric elastomer (DE). In the current study, we use a thermodynamic model to characterize the influence of temperature on the viscoelastic electromechanical response undergoing a constant electric load by taking into account the temperature dependent elastic modus and dielectric constant. Due to the significant viscoelasticity in the dielectric elastomer, DE membrane creeps in time and the inelastic stretch of DE is smaller than that of the total stretch. The results show that the total stretch of the viscoelastic electromechanical deformation increases with the increasing temperature until suffering electromechanical instability at a high temperature; the actuation performance is dominated by the moduli of the elastomer. This may be used to guide the design of dielectric elastomer actuators undergoing temperature variation.

• Periodical: Advanced Materials Research (Volume 1052)
• Pages: 137-142
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1052.137
• Online since: October 2014
• Authors: Jun Jie Sheng*, Yu Qing Zhang, Shu Yong Li, Hua Ling Chen
• Keywords: Dielectric Elastomer, Electromechanical, Temperature, Viscoelasticity

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