Premium
Influence of the temperature and deformation‐dependent dielectric constant on the stability of dielectric elastomers
Author(s) -
Sheng Junjie,
Chen Hualing,
Li Bo,
Wang Yongquan
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38361
Subject(s) - dielectric , materials science , electrostriction , elastomer , dielectric elastomers , composite material , deformation (meteorology) , constant (computer programming) , optoelectronics , programming language , piezoelectricity , computer science
The performance of dielectric elastomers is affected by temperature and deformation, but very few models account for the effect of both factors. Recent experiments showed that the dielectric constant of the most widely used dielectric elastomer varies significantly with respect to temperature and deformation. We propose a model to study the influence of changes in dielectric constant on the electromechanical stability of dielectric elastomer. The model predicts the stability criteria with physical interpretation of its dependence on dielectric constant and electrostrictive coefficient. The numerical simulation indicates that the stress due to electrostriction relies on the temperature and deformation dependent dielectric constant and contributes to enhance the stability of the dielectric elastomer. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013