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Evolutionary Electromechanical Stability in Stressed Viscoelastic Dielectrics

[+] Author Affiliations
Bo Li, Xuejing Liu, Hualing Chen

Xi’an Jiaotong University, Xi’an, China

Paper No. IMECE2015-50590, pp. V009T12A080; 7 pages
doi:10.1115/IMECE2015-50590
From:
  • ASME 2015 International Mechanical Engineering Congress and Exposition
  • Volume 9: Mechanics of Solids, Structures and Fluids
  • Houston, Texas, USA, November 13–19, 2015
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5752-6
  • Copyright © 2015 by ASME

abstract

Constant mechanical load offers stabilization in the electromechanical actuation of dielectric elastomer. Due to the viscoelasticity, the electromechanical coupling performance of dielectric elastomer varies with time as its stability evolves. The parameters of viscoelasticity are calibrated experimentally. By establishing a thermodynamics model, the evolutionary paths of electromechanical deformation are classified and investigated, where a transition, from unstable to stable, is identified. The critical time and critical load on the transition is determined, providing a path forward for improving performance of dielectric elastomer.

Copyright © 2015 by ASME

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