Mechanical behavior of an acrylic elastomer used in dielectric elastomer actuators

Wissler, Michael; Mazza, Edoardo

doi:10.1016/j.sna.2006.05.024

Cited by 294 publications

(224 citation statements)

References 13 publications

(22 reference statements)

Supporting

Mentioning

213

Contrasting

Unclassified

Order By: Relevance

“…Both are functions of the actuation frequency, the stress state and the temperature, so that a complete description of the dynamic behavior of DEAs must take these factors into account. There have been considerable previous efforts to model the behavior of DEAs based on silicone 6,8 and VHB elastomers. 7 Kofod and Sommer-Larsen 6 carried out tensile tests directly on a simple model silicone-based actuator and were able to use an empirical description of its hyperelastic behavior to describe its response to different applied voltages and loading conditions, although no attempt was made to describe the dynamic behavior in this case.…”

Section: Introductionmentioning

confidence: 99%

Frequency dependent dielectric and mechanical behavior of elastomers for actuator applications

Molberg

Leterrier

Plummer

et al. 2009

Journal of Applied Physics

114

View full text Add to dashboard Cite

The low frequency mechanical and dielectric behavior of three different elastomers has been investigated by dynamic mechanical analysis and dielectric spectroscopy, with the aim of accounting for the frequency dependence of the characteristics of the corresponding dielectric elastomer actuators. Satisfactory agreement was obtained between the dynamic response of the actuators and a simple model based on the experimental data for the elastomers, assuming that the relatively large prestrains employed in the actuators to have little influence on the frequency dependence of their effective moduli. It was thus demonstrated that the frequency dependence of the actuator strain is dominated by that of the mechanical response of the elastomer, and that the frequency dependence of the dielectric properties has a relatively minor influence on the actuator performance.

show abstract

Section: Introductionmentioning

confidence: 99%

Frequency dependent dielectric and mechanical behavior of elastomers for actuator applications

Molberg

Leterrier

Plummer

et al. 2009

Journal of Applied Physics

114

View full text Add to dashboard Cite

show abstract

“…(25) implies that at the initial time t = 0, both springs carry the applied load and the dashpot does not deform.…”

Section: Viscoelastic Model Of the Dielectric Elastomermentioning

confidence: 99%

“…By means of the initial conditions in (25), the four variables r(R,t), z(R,t), θ(R, t) and λ 1 (R, t) at t 0 = 0 can be obtained numerically from Eqs. (26) and (27) and Eqs.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…12,13 To address such issues and reveal the electromechanical behaviors of DEs, a number of theoretical or experimental investigations were reported in recent years. [14][15][16][17][18][19][20][21][22][23][24][25][26] The existing investigations mostly relate to the time-independent elastic behaviors of the DEs. However, most DEs are rubber-like materials and they often involve in time-dependent, dissipative processes, such as conductive relaxation, dielectric relaxation and viscoelastic relaxation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on the viscoelastic behaviors of a circular dielectric elastomer membrane undergoing large deformation

Wang

2016

AIP Advances

View full text Add to dashboard Cite

To explore the time-dependent dissipative behaviors of a circular dielectric elastomer membrane subject to force and voltage, a viscoelastic model is formulated based on the nonlinear theory for dissipative dielectrics. The circular membrane is attached centrally to a light rigid disk and then connected to a fixed rigid ring. When subject to force and voltage, the membrane deforms into an out-of plane shape, undergoing large deformation. The governing equations to describe the large deformation are derived by using energy variational principle while the viscoelasticity of the membrane is describe by a two-unit spring-dashpot model. The evolutions of the considered variables and the deformed shape are illustrated graphically. In calculation, the effects of the voltage and the pre-stretch on the electromechanical behaviors of the membrane are examined and the results show that they significantly influence the electromechanical behaviors of the membrane. It is expected that the present model may provide some guidelines in the design and application of such dielectric elastomer transducers.

show abstract

“…Material parameters for the simulation were taken from an approximation of the shear modulus of 3M VHB 4910 from Ogden model parameters derived by Wissler and Mazza. 11 The DEG sample considered had an initial area of 0.02 m 2 and was 0.1 mm thick, with an initial capacitance of 8.3 nF. The charging/discharging circuit is shown in Figure 2.…”

mentioning

confidence: 99%

Modelling the effect of actuator-like behavior in dielectric elastomer generators

Zanini

Rossiter

Homer

2015

Applied Physics Letters

View full text Add to dashboard Cite

Dielectric Elastomer Generators (DEGs) have been claimed as one promising technology for renewable mechanical to electrical energy harvesting, due to their lightweight, low cost, and high energy density. Dielectric elastomers have a dual behavior, able to convert electrical energy into mechanical if charged electrostatically and to convert mechanical to electrical energy if stretched and relaxed in a cycle that exploits its capacitance change. During such energy harvesting cycles, the material needs an electrical energy bias to be able to convert mechanical work into electrical energy, which produces an actuator behavior on the DEG that results in losses and decreases its performance. In this paper, we investigate this actuation behavior and its effect on energy harvesting in the DEGs. We compare two different charging methods and show that a constant voltage method can increase the net energy harvested by 5 times, despite the unwanted actuation effect.

show abstract

Mechanical behavior of an acrylic elastomer used in dielectric elastomer actuators

Cited by 294 publications

References 13 publications

Frequency dependent dielectric and mechanical behavior of elastomers for actuator applications

Frequency dependent dielectric and mechanical behavior of elastomers for actuator applications

Investigation on the viscoelastic behaviors of a circular dielectric elastomer membrane undergoing large deformation

Modelling the effect of actuator-like behavior in dielectric elastomer generators

Contact Info

Product

Resources

About