Investigation on the geometry of beams for piezoelectric energy harvester

Pradeesh, E. L.; Udhayakumar, S.

doi:10.1007/s00542-018-4220-8

Cited by 32 publications

(16 citation statements)

References 27 publications

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“…1 g of body load was applied to energy harvester. Isotropic damping factor 0.05 [25,30] was considered for energy harvester. The mass of accelerometer was applied at the free end of the cantilever beam.…”

Section: Numerical Analysismentioning

confidence: 99%

“…1 g of body load was given for energy harvester. 0.05 isotropic damping factor was [25,30] applied for both substrate and piezoelectric material. From various sizes of mesh analysis, it was found that the normal triangular mesh produces a better result at less time step along with the step frequency of 0.25 Hz.…”

Section: Numerical Analysis Of Considered Energy Harvestersmentioning

confidence: 99%

“…In the previously published work, Pradeesh and Udhayakumar [25] compared the performance of different geometries of piezoelectric energy harvester with the single piezoelectric material. In the present work, the performance of different geometries of piezoelectric energy harvester with two serially mounted piezoelectric material was presented.…”

Section: Numerical Analysis Of Considered Energy Harvestersmentioning

confidence: 99%

“…Spier et al [24] developed a numerical study to find the optimal location of multiple piezoelectric actuators and sensors on a cantilever beam, by which maximize the fundamental frequency and frequency gap between higherorder frequencies to avoid resonance when the excitation frequency is less than the fundamental frequency. Pradeesh and Udhayakumar [25] investigated the different geometries of the beam for piezoelectric energy harvesting. From the stress and strain analysis, they found that inverted taper beams produce more stress and strain compared to other beams; and also author found that resonant frequency of the beams by numerical, experiment and analytical.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on various beam geometries for piezoelectric energy harvester with two serially mounted piezoelectric materials

2019

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This paper presents the performance (frequency response, open-circuit voltage, optimum load, voltage and power under optimum load) of various designs of cantilever-based piezoelectric energy harvester with multiple piezoelectric materials, which is excited at the fixed end using the source of mechanical vibration and to compare the performance with single piezoelectric-mounted energy harvester. The performance of the energy harvester was determined using experimental and numerical methods. COMSOL Multiphysics 5.3a was used to obtain the numerical results of energy harvester. The results show that inverted taper in thick and width, inverted taper in thick and inverted taper in width piezoelectric energy harvesters produce 46.15%, 13.13% and 37.70% more power than the conventional rectangular piezoelectric energy harvester. The resonant frequency of inverted taper in thick and width, inverted taper in thick and inverted taper in width energy harvesters is 52.05%, 45.5% and 11.08% lower than the conventional rectangular energy harvester. It is observed that the different beam geometries with two piezoelectric material produce more power than the beams with single piezoelectric material.

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Section: Numerical Analysismentioning

confidence: 99%

Section: Numerical Analysis Of Considered Energy Harvestersmentioning

confidence: 99%

Section: Numerical Analysis Of Considered Energy Harvestersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on various beam geometries for piezoelectric energy harvester with two serially mounted piezoelectric materials

2019

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“…Geometric modifications included the use of a tapered piezoelectric beam instead of a rectangular piezoelectric beam to improve the performance of a piezoelectric energy harvester. [10][11][12] Several other studies have focused on improving the performance of piezoelectric material through compositional modifications, such as porosity, morphotropic phase boundary design, and doping ionic pairs have been reported in the literature. Qiao et al 13 increased the electromechanical coupling factor by 70% and the longitudinal piezoelectric coefficient (d 33 ) to 380pC/N of KNN-based ceramics by adding Bi 0.5 Na 0.5 Zr 0.15 Hf 0.75 O 3 (BNZH) compositions.…”

Section: Introductionmentioning

confidence: 99%

A 3-Dimensional Approach for Evaluating the Influence of Poling Orientation on Piezoelectric Characteristics

Singh

Sharma

Talha

et al. 2021

J. Electron. Mater.

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The present study proposes a 3-dimensional approach for enhancing the effective piezoelectric properties by poling orientation. The governing parameters for actuation and sensing applications are d 31 and d 31 ∕ 33 , respectively. The effective magnitudes of these parameters, i.e., d eff 31 and d eff 31 ∕ eff 33 , change with poling angles (roll and pitch angles). The combination of poling angles corresponding to the maximum magnitude of d eff 31 and d eff 31 ∕ eff 33 is called the optimum poling angle for piezoelectric materials. BaTiO 3 and KNN piezoelectric materials with tetragonal symmetry show an enhancement in d eff 31 ∕ eff 33 and d eff 31 at an optimized poling angle (roll angle). The piezoelectric material, 0.67Pb(Mg 1/3 Nb 2/3 )O 3 -0.33PbTiO 3 (PMN-0.33PT) with rhombohedral symmetry, shows a maximum improvement of 575% in d eff 31 ∕ eff 33at an optimum roll angle of 29° and a pitch angle of 60°. On the other hand, PMN-0.33PT shows an enhancement of 2034.44% in the d eff 31 coefficient at optimum roll and pitch angles of 50° and 60°. The effect of poling orientation on different piezoelectric materials with tetragonal and rhombohedral symmetry has been studied for actuation and sensing applications. The experimental approach to achieve inclination of dipoles through the placement of electrodes for different piezoelectric materials is also discussed.

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Architecture Design of High‐Performance Piezoelectric Energy Harvester with 3D Metastructure Substrate

Zhao,

Liu,

2024

Advcd Theory and Sims

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Piezoelectric energy harvesters (PEHs) have drawn considerable attention due to their unique ability to convert ambient mechanical energy to electrical energy. These devices are widely implemented in numerous applications such as wearable technology, structural health monitoring, and renewable energy systems. In this work, a novel approach that seamlessly integrates arbitrary metastructures into the substrate layer of cantilever beam‐based PEHs is presented. The corresponding performance of each PEH design is evaluated via an experimentally validated finite element model. This is the first systematic study to explore 3D metastructures with various unit cell configurations, unit cell numbers, and porosity levels. Compared with the existing PEH designs, implementation of a 3D auxetic metastructure with 85% porosity single unit cell design can demonstrate a substantial enhancement in output power, reaching 48.16 mW, and a high normalized power density (NPD) of 2.1131 µW mm−3 g−2 Hz−1. Results show that there are competing requirements for improving the performance of PEHs. On one hand, low metastructure stiffness is preferred to achieve high power output at low resonant frequency. On the other hand, metastructures designs with low stiffness may induce excessive distortion in the substrate layer, leading to mechanical energy loss. This deformation mechanism adversely affects the mechanical to electrical energy conversion efficiency. Detailed guidelines for designing and manufacturing high‐performance PEHs are discussed in this work.

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Investigation on the geometry of beams for piezoelectric energy harvester

Cited by 32 publications

References 27 publications

Investigation on various beam geometries for piezoelectric energy harvester with two serially mounted piezoelectric materials

Investigation on various beam geometries for piezoelectric energy harvester with two serially mounted piezoelectric materials

A 3-Dimensional Approach for Evaluating the Influence of Poling Orientation on Piezoelectric Characteristics

Architecture Design of High‐Performance Piezoelectric Energy Harvester with 3D Metastructure Substrate

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