Electromechanical stability of dielectric elastomer

Jinsong Leng; Liwu Liu; Yanju Liu; Kai Yu; Shouhua Sun
May 2009
Applied Physics Letters;5/25/2009, Vol. 94 Issue 21, p211901
Academic Journal
Electromechanical instability may occur in dielectric elastomer films due to the coupling between mechanical forces and electric fields. According to Zhao and Suo [Appl. Phys. Lett. 91, 061921 (2007)], free-energy in any form, which consists of elastic strain energy and electric energy, can be used to analyze the electromechanical stability of dielectric elastomer. By taking the permittivity as a variable depending on the deformation in a free energy function, a relationship is established among critical nominal electric field, critical real electric field, nominal stress, and principal stretch ratios. The accurate expressions of these parameters are presented for a special equal biaxial stretch case. All the results obtained by utilizing the single material constant neo-Hookean elastic strain energy model coincide with the conclusions by Zhao and Suo.


Related Articles

  • Large deformation and electromechanical instability of a dielectric elastomer tube actuator. Jian Zhu; Hristiyan Stoyanov; Guggi Kofod; Zhigang Suo // Journal of Applied Physics;Oct2010, Vol. 108 Issue 7, p074113 

    This paper theoretically analyzes a dielectric elastomer tube actuator (DETA). Subject to a voltage difference between the inner and outer surfaces, the actuator reduces in thickness and expands in length, so that the same voltage will induce an even higher electric field. This positive feedback...

  • Large strain transduction utilizing phase transition in relaxor-ferroelectric Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals. Finkel, Peter; Benjamin, Kim; Amin, Ahmed // Applied Physics Letters;5/9/2011, Vol. 98 Issue 19, p192902 

    In this work, we present experimental evidence that under relatively low level drive (<0.1 MV/m) the large strain (∼0.5%) associated with ferroelectric rhombohedral FR-ferroelectric orthorhombic FO phase transition in domain engineered relaxor-ferroelectric single crystals under compressive...

  • Electromechanical behavior of [001]-textured Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics. Yan, Yongke; Wang, Yu. U.; Priya, Shashank // Applied Physics Letters;5/7/2012, Vol. 100 Issue 19, p192905 

    [001]-textured Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) ceramics were synthesized by using templated grain growth method. Significantly high [001] texture degree corresponding to 0.98 Lotgering factor was achieved at 1 vol. % BaTiO3 template. Electromechanical properties for [001]-textured PMN-PT...

  • On electromechanical stability analysis of dielectric elastomer actuators. Xu, Bai-Xiang; Mueller, Ralf; Klassen, Markus; Gross, Dietmar // Applied Physics Letters;10/18/2010, Vol. 97 Issue 16, p162908 

    Based on the total stress concept, explicit results of the equilibrium state and the critical electric field are obtained for dielectric elastomer actuators. Criticality is discussed in the frame of structure stability and electric breakdown. Specific results are given for four commonly used...

  • Current leakage performance of dielectric elastomers under different boundary conditions. Tongqing Lu; Zhibao Shi; Zhiqiang Chen; He Huang; Wang, T. J. // Applied Physics Letters;10/12/2015, Vol. 107 Issue 15, p1 

    In the past decade, dielectric elastomers have become promising candidates in the applications of soft electromechanical transducers due to their outstanding properties of large deformation and high energy density. Current leakage of dielectric elastomer is one of the important dissipative...

  • Singularity of the electric field at the wetting line of a dielectric surface. Petrin, A. // High Temperature;Feb2011, Vol. 49 Issue 1, p22 

    n electric field is considered in the vicinity of the wetting line of a dielectric plate of a conducting or a dielectric liquid. It is shown that the electric field is, at the wetting line, a feature where the modulus of the field tends to infinity when the distance from the wetting line tends...

  • High electric field effects on gigahertz dielectric properties of water measured with microwave microfluidic devices. Chunrong Song; Pingshan Wang // Review of Scientific Instruments;May2010, Vol. 81 Issue 5, p054702 

    Silicon microstrip line devices with 260 nm planar microfluidic channels are fabricated and used to investigate water dielectric saturation effects. Microwave scattering parameter measurements are conducted from 1 to 16 GHz under different uniform dc electric fields. When the applied dc field is...

  • Dielectric behavior of electroactive fluorinate-based polymers under dc electric field. Yu, Zhi; Ang, Chen // Applied Physics Letters;10/25/2004, Vol. 85 Issue 17, p3827 

    The dielectric behavior in fluorinate-based polymers has been studied under a dc electric field of 0–72 V/μm. The two overlapped anomalies Modes A (A′) and B in the dielectric constant are clearly revealed under dc bias. Mode A′ in the terpolymer behaves as a ferroelectric...

  • Nonlinear dielectric properties of amorphous Bi1.8Pb0.3Sr2Ca2Cu3− x KxOz ( x = 0.2—0.3). Gridnev, S.; Repnikov, N. // Physics of the Solid State;Jun2006, Vol. 48 Issue 6, p1163 

    The dielectric constant of amorphous Bi1.8Pb0.3Sr2Ca2Cu3− x KxOx ( x = 0.2–0.3) is measured as a function of the static electric field strength. It is found that, as the field strength increases, the dielectric constant decreases following a quadratic law. This behavior of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics