A constitutive law for dielectric elastomers subject to high levels of stretch during combined electrostatic and mechanical loading: Elastomer stiffening and deformation dependent dielectric permittivity
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- 作者：Salomó ; n M.A. Jimé ; neza ; smajz2000@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Robert M. McMeekinga ; b ; c ; d
- 关键词：Strain-birefringence ; Deformation dependent dielectric permittivity ; Gaussian chain ; Dielectric elastomer actuator ; Electromechanical instability ; Electromechanical hysteresis ; Models for rubber elasticity
- 刊名：International Journal of Non-Linear Mechanics
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：87
- 期：Complete
- 页码：125-136
- 全文大小：2262 K
文摘
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We construct a constitutive law for dielectric elastomers featuring stiffening and a deformation dependent permittivity.
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The constitutive law combines the hierarchical features of the multiple scales present in the structure of an elastomer.
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We show that three well-known models of rubber elasticity are special cases of the elastic part of our constitutive law.
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We study the sensitivity, electromechanical hysteresis, performance, and stability of dielectric elastomer actuators.
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We construct stability maps for the operation of dielectric elastomer actuators.