Energy harvesting performance of viscoelastic polyacrylic dielectric elastomers

Zhang, Junshi; Wang, Yongquan; Chen, Hualing; Li, Bo

doi:10.1080/19475411.2015.1092480

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…In particular, viscoelasticity causes dissipation, i.e. losses, of the mechanical energy that, in its turn, reduces the efficiency of DE generators [10,[29][30][31]. The losses are associated with a hysteretic behaviour of a DE, i.e.…”

Section: Energy Harvesting 48mentioning

confidence: 99%

Dielectric Elastomers for Energy Harvesting

Thomson¹,

Yurchenko²,

Val

2018

Energy Harvesting

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Dielectric elastomers are a type of electroactive polymers that can be conveniently used as sensors, actuators or energy harvesters and the latter is the focus of this review. The relatively high number of publications devoted to dielectric elastomers in recent years is a direct reflection of their diversity, applicability as well as nontrivial electrical and mechanical properties. This chapter provides a review of fundamental mechanical and electrical properties of dielectric elastomers and up-to-date information regarding new developments of this technology and it's potential applications for energy harvesting from various vibration sources explored over the past decade.

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Section: Energy Harvesting 48mentioning

confidence: 99%

Dielectric Elastomers for Energy Harvesting

Thomson¹,

Yurchenko²,

Val

2018

Energy Harvesting

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“…[28]. Up to now, DE has also shown its application potentials in actuators [29,30], humanlike robots [31], stretchable electronics [32], energy harvesters [33], and among others. Compared with PE-based energy harvesters, dielectric elastomer generators (DEGs) can convert linear, nonlinear, or rotational motion within a wide frequency range [34].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Impact-Based Energy Conversion of a Dielectric Elastomer Membrane

et al. 2020

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Dielectric elastomer generators (DEGs) provide a new solution for vibrational energy harvesting. Currently, a type of impact-based DEGs, which can harvest energy from ambient vibrations, has been proposed and studied through simulations. However, the energy conversion mechanism and the performance evaluation approach of such impact-based DEGs have not been fully studied yet, thus limiting the reliability of the research on the system design/optimization and performance evaluation. In this paper, a single-sided impact (SSI) model is proposed to reveal the impact-based energy conversion mechanism. Based on this model, a complete four-stage impact process is analyzed to reveal the energy conversion mechanism, and the electrical outputs and energy conversion efficiency are derived as the energy harvesting performance evaluation indexes. To use the developed analytical model to predict the system electrical response accurately, some important parameters including the coefficient of restitution (COR) and largest deflection of the membrane at impacts were obtained experimentally, and the system output voltages at impacts were measured to verify the theoretical approaches in calculating the system electrical outputs and studying the parameters' influences. Furthermore, the influences of the pre-stretched ratio, impact velocity, and input voltage on the system energy harvesting performance are studied through simulations. The research results can provide guidelines to improve the energy harvesting performance of the impact-based DEGs in real applications.

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“…Subject to a mechanical tensile force and a voltage, a dielectric elastomer (DE) expands in area and shrinks in thickness [1][2][3][4][5][6]. In view of their remarkable properties like large deformation, fast response, high energy density and light weight, DEs have been attracting significant attention and attempting to be used in widespread applications, such as spring roll actuators [7], tunable lenses [8], valves [9], vibration dampers [10], flying wings [11,12], loudspeakers [13], and energy generators [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Dynamic analyses of viscoelastic dielectric elastomers incorporating viscous damping effect

Zhang

Zhao

Chen

et al. 2016

Smart Mater. Struct.

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In this paper, based on the standard linear solid rheological model, a dynamics model of viscoelastic dielectric elastomers (DEs) is developed with incorporation of viscous damping effect. Numerical calculations are employed to predict the damping effect on the dynamic performance of DEs. With increase of damping force, the DEs show weak nonlinearity and vibration strength. Phase diagrams and Poincaré maps are utilized to detect the dynamic stability of DEs, and the results indicate that a transition from aperiodic vibration to quasi-periodic vibration occurs with enlargement of damping force. The resonance properties of DEs including damping effect are subsequently analyzed, demonstrating a reduction of resonant frequency and resonance peak with increase of damping force.

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Energy harvesting performance of viscoelastic polyacrylic dielectric elastomers

Cited by 5 publications

References 28 publications

Dielectric Elastomers for Energy Harvesting

Dielectric Elastomers for Energy Harvesting

Investigation on the Impact-Based Energy Conversion of a Dielectric Elastomer Membrane

Dynamic analyses of viscoelastic dielectric elastomers incorporating viscous damping effect

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