A hula-hooping-like nonlinear buckled elastic string electromagnetic energy harvester for omnidirectional broadband excitations

Xie, Zhengqiu; Huang, Baorui; Wang, Sijia; Zhou, Xingyu; Gong, Yun; Huang, Wenbin

doi:10.1088/1361-665x/ab9147

Cited by 15 publications

(6 citation statements)

References 39 publications

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“…Additionally, the thickness is smaller than that of the length considering the microbeam model, and it is assumed that the electric field exists in the thickness direction only, that is 𝐸 𝑥 = 𝐸 𝑦 = 0 [44]. Accordingly, the constitutive Equations ( 4) to (6)…”

Section: Governing Equationsmentioning

confidence: 99%

“…As a result, achieving renewable and sustainable power supply for them by harvesting energy from ambient environments to eliminate the need for a battery has become a focus of attention. Mainly, energy harvesting techniques include electrostatic [5], electromagnetic [6], and piezoelectric [7], among them, piezoelectric energy harvesting technique is most widely adopted.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation on the thermo‐piezo‐flexoelectric energy harvesting performance of self‐powered microbeam devices considering strain gradient and dual‐phase‐lag effects

Gu,

He,

et al. 2024

Z Angew Math Mech

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Achieving renewable power for self‐powered electronic devices such as micro/nano‐electro‐mechanical systems is attractive in the fields of energy resources and environment, in this regard, dielectric material structures with excellent energy storage and electromechanical responses have stimulated a surge of research interest. However, in the micro/nanoscale filed, the existing thermo‐electromechanical continuum theories are not capable of fully and effectively characterizing the arising effects, for example, size‐dependent effect and heat lagging effect, etc. To further develop the existing theories, a theoretical prototype for piezo‐flexoelectricity by incorporating strain gradient effect and dual‐phase‐lag heat conduction model is proposed for the first time in this study, and then this proposed model is applied to investigating the energy harvesting performances of a piezo‐flexoelectric micro‐beam under piezoelectric‐thermoelastic coupling. In terms of the differential form of two‐phase elasticity and Hamilton's principle, the governing equations and the boundary conditions for the transverse vibration of a micro‐beam based on the Euler–Bernoulli beam model are derived. By means of the assumed mode method, the influences of the flexoelectricity, the load resistance and the strain gradient on voltage and output power are examined. From the obtained results, it can be aware of that this study not only presents the piezoelectric‐thermoelastic coupling effect of piezo‐flexoelectric configuration in microscale field, but also presents that a piezo‐flexoelectric system at microscale can generate higher power than that reported in previous works. It is hoped that this study could provide some guidelines in designing and optimizing dielectric energy harvesters of micro/nano electronic devices.

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Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on the thermo‐piezo‐flexoelectric energy harvesting performance of self‐powered microbeam devices considering strain gradient and dual‐phase‐lag effects

Gu,

He,

et al. 2024

Z Angew Math Mech

View full text Add to dashboard Cite

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“…In order to investigate the charging characteristics of SMBEH, the harvester was used to charge 33 and 100 µF capacitors [42]. The acceleration excitation amplitude is equal to 0.4 g, and the sweep rate is set to 1 Hz min −1 .…”

Section: Performance Of the Sbmehmentioning

confidence: 99%

A novel two degree of freedom single magnet bistable energy harvester based on internal resonance

Huang¹,

Chen²,

Lin³

et al. 2022

Smart Mater. Struct.

Self Cite

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Up to now, many nonlinear techniques such as bistable structure have been used to harvest vibration energy from the environment to achieve a wide response bandwidth. However, most bistable harvesters require two opposing magnets to form the potential energy function, which limits the miniaturization of the harvesters. In this paper, a two-degree-of-freedom U-shaped single magnet bistable energy harvester (SMBEH) based on the internal resonance technique is proposed. The harvester consists of a U-shaped beam, a magnet and a tip mass. The governing equations of the system are derived and the output performance of the harvester is obtained through numerical simulation and experiments which are in good agreement. The proposed SMBEH can achieve a wide band and large amplitude output due to the 1:2 internal resonance and bistable characteristic. When the excitation amplitude is equal to 0.4g, the SMBEH can produce significant output in two frequency ranges from 7Hz to 7.7Hz and 11.7Hz to 15.73Hz. In the end, the output performance of SMBEH at different resistances and the charging performance were verified, respectively.

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“…Huguet et al [27] studied the influence of the synchronized electric charge extraction circuit on the performance of a spring-type VEH consisting of a pre-compression spring and several hinged rods. In the third class, nonlinear forces are generated by geometric nonlinearity, such as buckling effect, large deformation, and so on [28]. For example, Qian et al [29] proposed a buckling-type VEH based on a beam that was inspired by the rapid shape transition of the Venus flytrap.…”

Section: Introductionmentioning

confidence: 99%

Design of a broadband piezoelectric energy harvester with piecewise nonlinearity

Zou

Liu

Rao

et al. 2021

Smart Mater. Struct.

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In this study, a novel broadband piezoelectric vibration energy harvester (VEH) is constructed using piecewise nonlinearity. The VEH consists of a piezoelectric cantilever beam and a cylindrical cam-roller-spring structure that can produce negative stiffness and piecewise nonlinearity. The designed piecewise nonlinear force consists of two sections. The first section keeps the nonlinear force small, so that the VEH generates a high peak power, and the second section makes the nonlinear force increase sharply, so that the VEH has a wide bandwidth. Therefore, the designed VEH has higher peak power and wider bandwidth than those VEHs based on smooth magnetic nonlinearity or spring nonlinearity. Firstly, a dynamic model is developed and the steady-state periodic responses are obtained by the average method. Then, the influences of the structure parameters of the cam-roller-spring on the performance of the VEH are studied. The results show that compared with the linear system, the piecewise nonlinearity can increase the peak voltage from 28.9 to 64.6 V, increasing by 123%; it can increase the peak power from 0.84 to 4.17 mW, increasing by 396%; and it can increase the operating frequency range from 0.99 to 6.48 Hz, increasing by 554%. Finally, the energy harvesting performance of the designed VEH is compared with the widely used magnet-type and spring-type VEHs, in which the nonlinear forces are smooth. The results show that the proposed VEH has a 9.67% increase in peak power, a 79.2% increase in the frequency band, and a 4.2% increase in maximum efficiency than the magnet-type VEH; and has a 23.5% increase in peak power, a 5.01% increase in the frequency band, and an 8.8% increase in maximum efficiency than the spring-type VEH.

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A hula-hooping-like nonlinear buckled elastic string electromagnetic energy harvester for omnidirectional broadband excitations

Cited by 15 publications

References 39 publications

Investigation on the thermo‐piezo‐flexoelectric energy harvesting performance of self‐powered microbeam devices considering strain gradient and dual‐phase‐lag effects

Investigation on the thermo‐piezo‐flexoelectric energy harvesting performance of self‐powered microbeam devices considering strain gradient and dual‐phase‐lag effects

A novel two degree of freedom single magnet bistable energy harvester based on internal resonance

Design of a broadband piezoelectric energy harvester with piecewise nonlinearity

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