Dynamic performance of dielectric elastomer balloon incorporating stiffening and damping effect

Abstract

Dielectric elastomer (DE) balloon is a new type of actuator that can be used as high frequency pumps or loudspeakers. In this paper, a theoretical model of DE balloon, incorporating stiffening and damping effect, is developed. The numerical results, such as stretch–time curves, phase diagrams and Poincaré maps, are presented to study the influence of stiffening and damping on its dynamic performance. Taking the damping effect into account, the DE balloon can reach the equilibrium state after attenuation when subject to an instantaneous constant voltage; subject to a ramping voltage, the dynamic response presents three obvious stages: steady deformation, snap-through or snap-back, and damped oscillation. Due to the strain stiffening, the DE balloon may have two different stable equilibrium states and each has its own natural frequency. With small perturbation energy, the DE balloon can oscillate steadily around the two equilibrium states and resonate at multiple excitation frequencies. With large perturbation energy, the steady oscillation may transform into chaos. The damping force, however, changes no matter steady or chaotic oscillation into a constant periodic oscillation, and also determines the oscillation position.

Dynamic analysis and active control of hard-magnetic soft materials

“…It should be mentioned that the previous works rarely investigated the dynamic response of hard-magnetic soft materials. The nonlinear vibration of soft materials has attracted much attention when the soft materials are subjected to the time-dependent loading [43][44][45][46][47][48]. It is also an important research topic for the modeling and design of magnetic-response structures such as vibration isolators, vibration absorbers, and dampers [8,[49][50][51][52].…”

Humidity Effect on Dynamic Electromechanical Properties of Polyacrylic Dielectric Elastomer: An Experimental Study

“…Chen et al [ 28 ] derived a high nonlinearity motion equation and presented the dynamic response of the DE balloon actuator subject to a combination of pressure and periodic voltage. Lv et al [ 29 ] developed a theoretical model incorporating the stiffening and damping effect, investigated the dynamic performance of a DE balloon subject to electromechanical coupling loads. Kashyap et al [ 30 ] developed a dynamic model to describe the dynamic response of a DE actuator for different values of viscoelasticity and anisotropy parameters.…”

Nonlinear dynamic behaviors and PID control of viscoelastic dielectric elastomer balloons

“…Zhang et al (2017b) analyzed the effect of the geometrical size of viscoelastic dielectric elastomer membrane on the dynamic response by generalized Maxwell model, which is proposed by Khan et al (2013). In addition, Lv et al (2018) investigated on the dynamic performance of dielectric elastomer balloons incorporating stiffening and damping effect by modeling the viscoelastic effect as damping force. Li et al (2019) studied the dynamic performance of viscoelastic dielectric elastomers considering nonlinear material viscosity.…”