Model of dissipative dielectric elastomers
By Choon Chiang Foo, Shengqiang Cai, Soo Jin Adrian Koh, Siegfried Bauer, Zhigang Suo. 2012
276 citations recorded by the source corpus.
The dynamic performance of dielectric elastomer transducers and their capability of electromechanical energy conversion are affected by dissipative processes, such as viscoelasticity, dielectric relaxation, and current leakage. This paper describes a method to construct a model of dissipative dielectric elastomers on the basis of nonequilibrium thermodynamics. We characterize the state of the dielectric elastomer with kinematic variables through which external loads do work, and internal variables that measure the progress of the dissipative processes. The method is illustrated with examples motivated by existing experiments of polyacrylate very-high-bond dielectric elastomers. This model predicts the dynamic response of the dielectric elastomer and the leakage current behavior. We show that current leakage can be significant under large deformation and for long durations. Furthermore, current leakage can result in significant hysteresis for dielectric elastomers under cyclic voltage.
Subfields: Biomedical Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/4259434c5210825f48f32e9300c803083ebd6363
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In Biomedical Engineering
- Zhigang Suo
- Christoph Keplinger
- Siegfried Bauer
- Tiefeng Li
- Wei Yang
- Richard A. Baumgartner
- Xuanhe Zhao
- Jian Zhu
In Materials Chemistry
Citations in the corpus
- Giant voltage-induced deformation in dielectric elastomers near the verge of snap-through instability (2013, methodology): “2)—a setup commonly used to study electromechanical coupling of dielectric elastomers (e.g., Fox and Goulbourne, 2008; Rosset et al., 2009).”