Influence of design parameters on bending piezoelectric harvester effectiveness: Static approach

Nowak, Roland; Pietrzakowski, M.; Rumianek, P.

doi:10.1016/j.ymssp.2020.106833

Cited by 11 publications

(4 citation statements)

References 9 publications

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“…In most research results, the optimization of the piezoelectric cantilever beam ignores the allowable strain of material, which represents an ideal situation. Nowak et al (2020) studied the optimal aspect ratio of the cantilever beam using a static method. The research results of Wang et al (2019) and Salmani and Rahimi (2018) showed that designing a beam with exponentially varying shapes can obtain the largest power density and reduce the cost of the energy harvester.…”

Section: Optimization Resultsmentioning

confidence: 99%

“…However, there are many optimizations in the base vibration energy harvester regarding the geometry of piezoelectric cantilever beams. For example, Nowak et al (2020) optimized the uniform beam's length, width, and thickness. Salmani et al (2010), Salmani and Rahimi (2018), Pradeesh and Udhayakumar (2019), and Hajheidari et al (2020) concluded that the exponentially tapered piezoelectric beam improves the voltage per mass of the energy harvester.…”

Section: Introductionmentioning

confidence: 99%

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Topological optimization of a variable cross-section cantilever-based piezoelectric wind energy harvester

et al. 2022

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Wind energy is a typical foreseeable renewable energy source. This study constructs and optimizes a variable cross-section cantilever-based piezoelectric energy harvester for low-speed wind energy harvesting. The Galerkin approach is usually used to discretize the continuum model and then get the ordinary differential equations. However, this method is more suitable for calculating uniformity than the variable cross-sectional beam model. To solve this problem, we proposed an improved piecewise Galerkin approach for discretizing the continuum model with a variable cross section. By modifying the boundary expressions and modal functions between segments, it can improve both computation speed and accuracy. COMSOL simulations demonstrate that natural frequencies calculated via the improved method are more accurate than those of the traditional Galerkin method. The method of multiple scales is applied to determine the output power and critical wind velocity. A distinctive numerical approach is presented for shape optimization by combining the analytical calculation method with the particle swarm optimization (PSO) technique for low-speed wind energy harvesting. Additionally, the logic function is chosen to produce the optimal shape’s fitting expression for engineering applications. With all the improvements, the output power of a variable cross-section beam-based harvester reaches as much as 3.668 times that of a uniform beam model, demonstrating the importance of structural optimization for this type of energy harvesters. Finally, experiments are set up to verify the optimization procedure. Actually, it builds an analytical framework for the adaptive selection of variable-section piezoelectric cantilever wind-induced vibration energy harvesters.

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Section: Optimization Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Topological optimization of a variable cross-section cantilever-based piezoelectric wind energy harvester

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The main directions of the modeling and laboratory studies include multi-stable [ 11 , 12 ] and/or impacting devices [ 13 , 14 , 15 , 16 ]. Additional possibilities are using multiple-degree-of-freedom systems [ 17 , 18 , 19 , 20 , 21 ], self-adapting the resonator to the excitation conditions [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Energy Harvesting System Whose Potential Is Mapped with the Modified Fibonacci Function

Margielewicz

Gąska

Litak

et al. 2023

Sensors

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In this paper, we compare three energy harvesting systems in which we introduce additional bumpers whose mathematical model is mapped with a non-linear characteristic based on the hyperbolic sine Fibonacci function. For the analysis, we construct non-linear two-well, three-well and four-well systems with a cantilever beam and permanent magnets. In order to compare the effectiveness of the systems, we assume comparable distances between local minima of external wells and the maximum heights of potential barriers. Based on the derived dimensionless models of the systems, we perform simulations of non-linear dynamics in a wide spectrum of frequencies to search for chaotic and periodic motion zones of the systems. We present the issue of the occurrence of transient chaos in the analyzed systems. In the second part of this work, we determine and compare the effectiveness of the tested structures depending on the characteristics of the bumpers and an external excitation whose dynamics are described by the harmonic function, and find the best solutions from the point view of energy harvesting. The most effective impact of the use of bumpers can be observed when dealing with systems described by potential with deep external wells. In addition, the use of the Fibonacci hyperbolic sine is a simple and effective numerical tool for mapping non-linear properties of such motion limiters in energy harvesting systems.

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“…Recently, many researchers have studied the use of piezoelectric energy harvesting technologies [32][33][34][35][36][37][38][39]. A hybrid energy harvesting system under a various excitation was also reported [40][41][42][43][44][45][46][47][48][49][50][51]. The materials focused on energy harvesting, and the piezoelectric materials considered in the modeling and optimization of the load in order to generate maximum power were reviewed [52,53].…”

Section: Introductionmentioning

confidence: 99%

Conversion of Mechanical Energy to Electrical Energy Using Piezoelectric Materials for Bicycle Lane Lighting Systems

2022

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This study examined the electromechanical characteristics of piezoelectric materials, which constitute a compact renewable energy source; these materials can convert mechanical energy (such as pressure or a cumulative impact) in the form of mechanical stress to electricity. This study further explored systems that require moderate energy and utilize piezoelectric materials to create an energy-generating floor. The electrical characteristics of these piezoelectric materials were studied, including the feasibility of installing them as a power source for road lighting, particularly cycling lanes. Furthermore, the effects of riders’ weights and cycling speeds were investigated. The results indicate that the electric power generated is adequate for the installation of these materials and can thus help improve visibility in the event of insufficient lighting.

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Influence of design parameters on bending piezoelectric harvester effectiveness: Static approach

Cited by 11 publications

References 9 publications

Topological optimization of a variable cross-section cantilever-based piezoelectric wind energy harvester

Topological optimization of a variable cross-section cantilever-based piezoelectric wind energy harvester

Energy Harvesting System Whose Potential Is Mapped with the Modified Fibonacci Function

Conversion of Mechanical Energy to Electrical Energy Using Piezoelectric Materials for Bicycle Lane Lighting Systems

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