Harvesting energy with load-driven dielectric elastomer annular membranes deforming out-of-plane

Bortot, Eliana; Gei, Massimiliano

doi:10.1016/j.eml.2015.09.009

Cited by 50 publications

(32 citation statements)

References 26 publications

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“…In order to obtain a reasonable amount of energy harvested, we considered a maximum stretch of 3.85, and a minimum stretch of 1.25, in order to follow the suggested optimal pre-stretch. 16 Using the stress-strain curve for the material chosen and considering the cone-shaped geometry of the deformed DEG, we obtain a maximum forcing of 8000N and a minimum of 550N per membrane.…”

Section: Device Designmentioning

confidence: 99%

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Frequency-domain trade-offs for dielectric elastomer generators

2017

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Dielectric Elastomer Generators (DEGs) are an emerging energy harvesting technology based on a the cyclic stretching of a rubber-like membrane. However, most design processes do not take into account different excitation frequencies; thus limits the applicability studies since in real-world situations forcing frequency is not often constant. Through the use of a practical design scenario we use modeling and simulation to determine the material frequency response and, hence, carefully investigate the excitation frequencies that maximize the performance (power output, efficiency) of DEGs and the factors that influence it.

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Section: Device Designmentioning

confidence: 99%

“…16 It uses a conceptual design consisting of several disc-shaped DEGs connected at their centers to a moving piston, and to the internal part of a static cylinder at their edges. 8 It is estimated that the pistons can be pushed with force of 34kN.…”

Section: Device Designmentioning

confidence: 99%

Frequency-domain trade-offs for dielectric elastomer generators

2017

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“…The performance of a DEG composed of an annular membrane deformed out-of-plane by an external oscillating loading that was investigated employing a hyper-electro-elastic model with parameters adjusted to simulate the behavior of material such as an acrylic elastomer and a type of natural rubber [23]. Zhou et al [24] claimed that a material viscoelasticity had a significant effect on the electromechanical coupling and dynamic performance.…”

Section: Background On De Artificial Musclementioning

confidence: 99%

Simple and Robust Direct Drive Wave Power Generation System Using Dielectric Elastomers

Chiba¹,

Waki²,

Fujita³

et al. 2017

JMSE-B

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DEs (dielectric elastomers), a type of electroactive polymer, show considerable promise for harvesting energy from wind, ocean waves, water currents, or even from human motion. Their energy density and efficiency of conversion make for simple, low cost, and robust generators where an electroactive polymer transducer is directly driven by the up-and-down motions of waves. Over the past few years, we have conducted various tests to validate DE wave power generators. In our 2010 test, a DE generator generated electricity even with comparatively small wave heights. Generator performance over a longer period of time (50 minutes) was evaluated in our present test. In the 2010 test, the system was not able to automatically respond to changes in sea level because of its mooring. The present system used a sunken horizontal plate, which enabled it to create the needed reaction forces and respond to sea level changes. This method of mooring generated electric power even in deep water.

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“…Two approaches, (1) DE materials and mechanical systems use DEs [11][12][13][14][15][16][17][18][19], and (2) operating strategies (circuit designs) [13,[16][17][18][19] are being studied at the present time.…”

Section: Background On Dementioning

confidence: 99%

Development of Wave Generation Module for Small Ships Using Dielectric Elastomer

Waki¹,

Chiba²,

Ohyama³

et al. 2017

JMSE-B

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Abstract:From 2007 to 2015, we installed DE (dielectric elastomer) generators on a buoy, and succeeded in a demonstration of power generation at sea. In 2011, we also pointed out that DE generators could be useful for ships for the first time in the world. Using the know-how obtained at that time, we have recently developed an innovative wave-power generator for small ships, which can generate electric power by the rocking movement of the ship. Mounting this device on a model ship, we carried out a demonstration experiment of the power generation in a wave-generation water-tank to verify its feasibility for practical use on a real ship. And 48% of wave energy (gross value) can be converted to electric energy, suggesting the realization of fairly high efficiency power generation, compared with the efficiency of the existing wave generators.

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Harvesting energy with load-driven dielectric elastomer annular membranes deforming out-of-plane

Cited by 50 publications

References 26 publications

Frequency-domain trade-offs for dielectric elastomer generators

Frequency-domain trade-offs for dielectric elastomer generators

Simple and Robust Direct Drive Wave Power Generation System Using Dielectric Elastomers

Development of Wave Generation Module for Small Ships Using Dielectric Elastomer

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