Auxetic clamped-clamped resonators for high-efficiency vibration energy harvesting at low-frequency excitation

Ebrahimian, Fariba; Kabirian, Zohre; Younesian, Davood; Eghbali, Pezhman

doi:10.1016/j.apenergy.2021.117010

Cited by 28 publications

(7 citation statements)

References 42 publications

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“…The length, width, and thickness of the composite piezoelectric beam are 171 mm, 22 mm, and 0.8 mm, respectively (figures 1(b) and (c)). Note that although piezoelectric ceramics such as lead zirconate titanate (PZT) are commonly used for vibration energy harvesting due to their higher power density [30,40,45,46], they are brittle and lack of robustness under large displacement. As a result, the flexible PVDF film is applied in this design.…”

Section: Energy Harvester Design and Fabricationmentioning

confidence: 99%

“…However, since the weight of the bolt and nuts has a significant influence on the natural frequency of the energy harvester, the density of the proof mass 1 is assumed to be the same as the aluminium alloy 6063, while the density of the proof mass 2 is calculated based on the weight of the proof mass used in the experiments. Besides, considering the imperfect bonding caused by the adhesive, substrateadhesive-polyester interfaces are modelled as thin elastic layers with a bonding strength of 200 GN m −3 [56], and the damping ratio of the system is assumed to be a single isotropic loss factor with a value of 0.001 [40]. The computational mesh configuration of the proposed AEH is shown in figure 4(b).…”

Section: Femmentioning

confidence: 99%

“…The modal analysis is conducted to determine the eigenfrequencies of the energy harvester. A sinusoidal body load equivalent to a constant vibration of 0.3 g acceleration [40] at the first eigenfrequency is applied to the energy harvester along the z axis. Since the doubly clamped piezoelectric beam of the energy harvester has a thin thickness and exhibits large deflection when subject to an excitation acceleration of 0.3 g, the impact of geometric nonlinearity should be considered.…”

Section: Femmentioning

confidence: 99%

“…Tabak et al [39] thoroughly reviewed the design of piezoelectric energy harvesters based on various auxetic structures. Ebrahimian et al [40] numerically and experimentally demonstrated that the auxetic structure could effectively reduce the resonance frequency and increase the power output of the piezoelectric energy harvester. Sadikbasha et al [41] proposed a cantilever-based piezoelectric energy harvester with an auxetic hexachiral structure.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Zhang,

Chen,

Karimi

et al. 2024

Smart Mater. Struct.

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To deal with the limited availability of long-lasting power sources for sensor nodes in industrial environments, a novel piezoelectric energy harvester with high efficiency and a wide working bandwidth was designed to harvest broadband and random vibrations from the ambient environment. The developed energy harvester adopts a doubly clamped piezoelectric beam with a peanut-shaped auxetic structure to improve the power output. It also incorporates a sliding proof mass for frequency self-tuning, enabling a wider working bandwidth. As the doubly clamped beam exhibits geometry nonlinearity under large vibration amplitudes, the power output of the energy harvester can be further enhanced in the frequency self-tuning process. Finite element simulations are conducted to evaluate the impact of the auxetic structure and the position of the proof mass on the performance of the energy harvester. Experiments are performed to examine the energy harvesting performance of the proposed energy harvester. Under an excitation acceleration of 0.3 g, the use of the sliding proof mass widens the working bandwidth of the auxetic energy harvester (AEH) by 9 Hz, with the maximum RMS output power of AEH reaching 18.78 μW, which is much higher than that of the plain energy harvester (PEH) or the AEH with a fixed proof mass. The developed energy harvester can successfully power a wireless temperature and humidity sensor node based on the vibration produced by a centrifuge, which demonstrates the practical feasibility of the proposed energy harvester for industrial applications.

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Section: Energy Harvester Design and Fabricationmentioning

confidence: 99%

Section: Femmentioning

confidence: 99%

Section: Femmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Zhang,

Chen,

Karimi

et al. 2024

Smart Mater. Struct.

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show abstract

“…Auxetic materials were discovered by Lakes (1987), who showed that the effective negative Poisson's ratio can improve mechanical and thermal material response. Subsequently, researchers proposed to use NPR materials in various fields, including biomedical, protection, sensors and actuators, and the vibro-acoustics (Eghbali et al 2020;Ebrahimian et al 2021;Liu and Hu 2010). Since this study is focused on the vibro-acoustic analysis, we further review only vibro-acoustic applications.…”

Section: Introductionmentioning

confidence: 99%

Full-Gradient Optimization of the Vibroacoustic Performance of (Non-)auxetic Sandwich Panels

et al. 2021

Self Cite

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This paper aims to optimize vibro-acoustic response of (non-) auxetic sandwich panels by use of topology optimization method. First, structural noise and vibration responses of the auxetic panel with the re-entrant hexagonal honeycomb core are studied. It is proved that the interactions between the structural vibrations and induced noise are more complex when expected for a low-frequency range, and the optimized noise reduction can be obtained by a proper combination of auxetic and non-auxetic properties within a single structure. Therefore, vibro-acoustic response of the sandwich panel with a re-entrant hexagonal honeycomb core by applying a full-gradient two-dimensional geometry optimization method is analyzed and optimized. It is shown that under various random loads, the sound power level can be reduced by about 20% at the cost of a slight increase (< 5%) of the total mass. Besides, the structural Eigen frequencies are shifted to lower values that are desirable for applications, e.g., in the aerospace industry. The obtained results ensure that the proposed optimization approach delivers extra noise reduction for auxetic sandwich panels as compared to the results available in the literature.

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Negative Poisson’s ratio locally resonant seismic metamaterials vibration isolation barrier

Ding,

Huang,

Muhammad

et al. 2024

Acta Mech. Sin.

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Auxetic clamped-clamped resonators for high-efficiency vibration energy harvesting at low-frequency excitation

Cited by 28 publications

References 42 publications

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Numerical and experimental investigation of an auxetic piezoelectric energy harvester with frequency self-tuning capability

Full-Gradient Optimization of the Vibroacoustic Performance of (Non-)auxetic Sandwich Panels

Negative Poisson’s ratio locally resonant seismic metamaterials vibration isolation barrier

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