A generic double-curvature piezoelectric shell energy harvester: Linear/nonlinear theory and applications

Zhang, X.F.; Hu, S. D.; Tzou, H. S.

doi:10.1016/j.jsv.2014.08.013

Cited by 17 publications

(12 citation statements)

References 20 publications

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“…While for the direct piezoelectric effect, the dynamic strain generates electric displacement. For the piezoelectric circular ring energy harvester, the transverse electric displacement is expressed as 3 where e 31 is the piezoelectric strain constant; ɛ 33 is the dielectric permittivity constant and subscript p denotes the piezoelectric energy harvester; r e is the moment arm. The electric displacement is induced by the circumferential strain S ψ ψ consisting of the membrane strain Sψψ o and the bending strain k ψ ψ .…”

Section: Piezoelectric Ring Energy Harvestermentioning

confidence: 99%

“…converting vibration energy to electric energy, has attracted much attention and been researched by many researchers in recent years. 1–3…”

Section: Introductionmentioning

confidence: 99%

“…Based on the double-curvature flexoelectric/piezoelectric energy harvester, the ring energy harvesting theory is obtained by giving the Lamé parameters and the curvature radii of the ring. 3,12 The purpose of this study is to propose a flexoelectric/piezoelectric ring energy harvester, which is made of an elastic ring and a flexoelectric/piezoelectric patch laminated on its surface. The electromechanical coupling mechanism of the flexoelectric/piezoelectric ring energy harvester is explored.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of flexoelectric and piezoelectric ring energy harvester

Zhang

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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Flexoelectric/piezoelectric effect is an electromechanical coupling effect occurring in dielectrics. In this study, a flexoelectric/piezoelectric ring energy harvester is proposed based on the direct flexoelectric/piezoelectric effect. The flexoelectric/piezoelectric ring energy harvester is made of an elastic ring and a flexoelectric/piezoelectric patch laminated on its surface. The electromechanical coupling mechanism of the flexoelectric/piezoelectric ring energy harvester is explored. Then the voltage and power output across the load resistance are derived in the closed-circuit condition for the energy harvester. The distinctive characteristics between the flexoelectric and the piezoelectric energy harvesters are discussed and compared in detail. The output power/voltage is related to various parameters, such as flexoelectric/piezoelectric patch size, load resistance, and flexoelectric/piezoelectric patch thickness, which are discussed to improve the power output across the load resistance. The flexoelectric ring energy harvester is more effective than the piezoelectric ring energy harvester in the transverse oscillation-bending dominant vibration, since the flexoelectric effect is sensitive to the strain gradient (bending strain). This study, including theoretical derivations and simulation plots, provide design guidelines in engineering applications for flexoelectric/piezoelectric effect.

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Section: Piezoelectric Ring Energy Harvestermentioning

confidence: 99%

“…converting vibration energy to electric energy, has attracted much attention and been researched by many researchers in recent years. 1–3…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of flexoelectric and piezoelectric ring energy harvester

Zhang

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…With the direct piezoelectric effect, Dietl et al [1] proposed a Timoshenko model of transverse piezoelectric beam vibration and examined the frequency response of vibration-based energy harvesters. Zhang et al [2] developed a generic linear and nonlinear piezoelectric shell energy harvesting theory based on a double-curvature shell. Due to its low cost, compact sensor size, and simple signal conditioning, piezoelectric sensing has also been applied in high-temperature applications, including accelerometers, surface acoustic wave sensors, ultrasound transducers, acoustic emission sensors, gas sensors, and pressure sensors for temperatures up to 1250 • C [3].…”

Section: Introductionmentioning

confidence: 99%

Active Actuating of a Simply Supported Beam with the Flexoelectric Effect

Fan

Min

2020

Materials

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Piezoelectric materials with the electro-mechanical coupling effect have been widely utilized in sensors, dampers, actuators, and so on. Engineering structures with piezoelectric actuators and sensors have provided great improvement in terms of vibration and noise reduction. The flexoelectric effect—which describes the coupling effect between the polarization gradient and strain, and between the strain gradient and electric polarization in solids—has a fourth-rank order tensor electro-mechanical coupling coefficient, and in principle makes the flexoelectricity existing in all insulating materials and promises an even wider application potential in vibration and noise control. In the presented work, a flexoelectric actuator was designed to actuate a simply supported beam. The electric field gradient was generated by an atomic force microscopy probe. Flexoelectric control force and moment components could be induced within the flexoelectric control layer. As flexoelectricity is size-dependent, the key parameters that could affect the actuating effect were examined in case studies. Analytical results showed that the induced flexoelectric control moment was strongly concentrated at the probe location. The controllable transverse displacement of the simply supported beam was calculated with the modal expansion method. It was found that the controllable transverse displacement was dependent on the probe location as well.

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“…Various smart materials, including piezoelectric [1,2], flexoelectric [3,4], magnetoelectric [5] and thermoelectric [6] have been used to generate electricity by extracting energy sources, such as vibration, light, thermos and magnetism, from external environments. Piezoelectric materials are widely applied to capitalize the ambient vibrations for its ability to transform mechanical strain energy into electrical charge.…”

Section: Introductionmentioning

confidence: 99%

A laser tunable piezoelectric energy harvester

Guo

Tzou

2015

2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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In this study, a tunable piezoelectric energy harvester manipulated by the light-activated shape memory polymer (LaSMP) is presented. A laminated cantilever beam consists of an elastic substrate, a light-activated shape memory polymer layer and piezoelectric patches is used as energy harvester. LaSMP layer could change its Young's modulus under the exposure of UV lights and harvester's natural frequency is regulated through the modulus change function of LaSMP. The tuned natural frequency of the harvester could match the external base excitation frequency and thus to achieve broadband resonance energy harvesting responses. For the first mode, the effective power increases from 1.18×10 -4 μW to 1.3×10 -3 μW when the natural frequency changes from 6.12Hz to 5.94Hz. For the second mode, the effective power increases from 0.003μW to 0.0304μW and for the third mode, it increases from 0.0086μW to 0.0879μW.

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A generic double-curvature piezoelectric shell energy harvester: Linear/nonlinear theory and applications

Cited by 17 publications

References 20 publications

Comparison of flexoelectric and piezoelectric ring energy harvester

Comparison of flexoelectric and piezoelectric ring energy harvester

Active Actuating of a Simply Supported Beam with the Flexoelectric Effect

A laser tunable piezoelectric energy harvester

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