An analytical model of the electromechanical coupling for a piezoelectric stepped buckled beam for energy harvesting applications

Osinaga, Santiago; Machado, Sebastián P.; Febbo, Mariano

doi:10.1016/j.ymssp.2022.109355

Cited by 13 publications

(3 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, the terms are analyzed in the order of ε 3 , Equations ( 26) and ( 28) are substituted into Equation (25), and the secular terms are collected and equated to 0, resulting in the solvability condition being found as follows:…”

Section: System Frequency Is Defined Asmentioning

confidence: 99%

“…They applied Hertzian Contact Force to one end and found that the theoretical power generation efficiency of the two forces combined was the same as that reported by Wang et al’s research team [ 10 , 11 , 12 , 13 ], who demonstrated that the energy conversion efficiency of two elastic steel sheets slapping a PZT was better than that of traditional single elastic steel sheet energy harvesting systems. Osinaga et al [ 25 ] analyzed the power generation efficiency of buckling beams before (monostable) and after (bistable) buckling. They coupled the nonlinear Bernoulli–Euler beam and piezoelectric equations to calculate the states of buckling beams before and after buckling, discretized the space using the Galerkin method, and found analytical expressions for the displacement amplitudes of each mode.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

Wang,

Kuo

2023

Sensors

View full text Add to dashboard Cite

This study aims to enhance conventional vibration energy harvesting systems (VEHs) by repositioning the piezoelectric patch (PZT) in the middle of a fixed–fixed elastic steel sheet instead of the root, as is commonly the case. The system is subjected to an axial simple harmonic force at one end to induce transversal vibration and deformation. To further improve power conversion, a baffle is strategically installed at the point of maximum deflection, introducing a slapping force to augment electrical energy harvesting. Employing the theory of nonlinear beams, the equation of motion for this nonlinear elastic beam is derived, and the method of multiple scales (MOMS) is used to analyze the phenomenon of parametric excitation. This study demonstrates through experiments and theoretical analysis that the second mode yields better power generation benefits than the first mode. Additionally, the voltage generation benefits of the enhanced system with the added baffle (slapping force) surpass those of traditional VEH systems. Overall, the proposed model proves feasible and holds promising potential for efficient vibration energy harvesting applications in various industrial sectors.

show abstract

Section: System Frequency Is Defined Asmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

Wang,

Kuo

2023

Sensors

View full text Add to dashboard Cite

show abstract

“…This frequency mismatch leads to the suboptimal effectiveness of the harvester. To overcome this issue, different studies in the literature propose the adoption of frequency up-conversion [ 17 ], which can be achieved via the non-linear behaviour of structural elements [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ], buckling [ 21 , 22 , 23 , 24 ], and magnetic interaction [ 25 , 26 , 27 , 28 ]. In other cases, with the purpose of increasing the scavenged energy, arrays of resonant converters are proposed [ 29 , 30 , 31 , 32 ], and the adoption of special metamaterials is introduced [ 33 , 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of an Impact-Based Frequency Up-Converted Piezoelectric Vibration Energy Harvester for Wearable Devices

Aceti

Rosso

Ardito

et al. 2023

Sensors

View full text Add to dashboard Cite

This work presents a novel development of the impact-based mechanism for piezoelectric vibration energy harvesters. More precisely, the effect of an impacting mass on a cantilever piezoelectric transducer is studied both in terms of the tip mass value attached to the cantilever and impact position to find an optimal condition for power extraction. At first, the study is carried out by means of parametric analyses at varying tip mass and impact position on a unimorph MEMS cantilever, and a suitable physical interpretation of the associated electromechanical response is given. The effect of multiple impacts is also considered. From the analysis, it emerges that the most effective configuration, in terms of power output, is an impact at the cantilever tip without a tip mass. By changing the value of the tip mass, a sub-optimal impact position along the beam axis can also be identified. Moreover, the effect of a tip mass is deleterious on the power performance, contrary to the well-known case of a resonant energy harvester. A mesoscale prototype with a bimorph transducer is fabricated and tested to validate the computational models. The comparison shows a good agreement between numerical models and the experiments. The proposed approach is promising in the field of consumer electronics, such as wearable devices, in which the impact-based device moves at the frequencies of human movement and is much lower than those of microsystems.

show abstract

Establish a Model of a Piezoelectric Energy Harvesting System at Energy Level Using Lagrangian Equation

Cheng,

Dong,

Xiao

2024

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

An analytical model of the electromechanical coupling for a piezoelectric stepped buckled beam for energy harvesting applications

Cited by 13 publications

References 48 publications

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

Enhancing Electrical Generation Efficiency through Parametrical Excitation and Slapping Force in Nonlinear Elastic Beams for Vibration Energy Harvesting

Optimization of an Impact-Based Frequency Up-Converted Piezoelectric Vibration Energy Harvester for Wearable Devices

Establish a Model of a Piezoelectric Energy Harvesting System at Energy Level Using Lagrangian Equation

Contact Info

Product

Resources

About