Dynamic analysis of a buckled asymmetric piezoelectric beam for energy harvesting

Blarigan, Louis Van; Moehlis, Jeff

doi:10.1063/1.4943172

Cited by 12 publications

(4 citation statements)

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“…Based on the buckled beam, multi-component coupled structures were designed for low-frequency (<30 Hz), including a torsional rod [19,20] or an elastic beam [21]. However, the buckled VEHs may weaken the energy conversion in the case of insufficient vibrational intensity due to the fact that the jump between the potential wells of bi-stable systems is not activated.…”

Section: Introductionmentioning

confidence: 99%

Energy harvesting characteristics of preloaded piezoelectric beams

Cao¹,

Huang²,

He³

2019

J. Phys. D: Appl. Phys.

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A broad bandwidth is considered to be one of the most important characteristics of vibrational energy harvesters (VEHs) in order to enhance energy efficiency. To this end, an axially compressive load is applied to the VEHs of a conventional bimorph piezoelectric cantilever beam by pre-tensile cables. The theoretical framework is based on Euler-Bernoulli beam theory and the von Kárman nonlinear kinetic relation, and the electromechanical coupling governing equations are derived by using the Hamilton variational principle of the total potential energy. Treatments by Galerkin discretization and the perturbation method of multiscales give the asymptotically analytic solutions of the displacement amplitude, the voltage amplitude and the average output power, which are validated by the experimental datum in the literature. With the aid of COMSOL Multiphysics, the parametric studies are addressed to explore the mechanisms of the axial preload, the harmonic excitation, the resistance, etc, acting behind the energy harvesting characteristics. The results show that the preload does improve the bandwidth characteristic significantly, specifically, a 64% reduction in the first natural frequency and 196.6% increase of the bandwidth. The present work provides fundamental theoretical support and guides the design of potential preloaded VEHs.

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Section: Introductionmentioning

confidence: 99%

Energy harvesting characteristics of preloaded piezoelectric beams

Cao¹,

Huang²,

He³

2019

J. Phys. D: Appl. Phys.

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“…More recently, Van Blarigan and Moehlis studied the dynamic behaviors of a buckled asymmetric piezoelectric beam for energy harvesting. [ 120 ] In their work, the asymmetric buckled beam was made of a single layer and a bimorph layer. The snap‐through behaviors of the beam and its transition from monostable to bistable motions were studied.…”

Section: Bistable Structures For Energy Harvestersmentioning

confidence: 99%

Bistable Structures for Advanced Functional Systems

Cao

Derakhshani

Fang

et al. 2021

Adv Funct Materials

140

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Bistable mechanical systems having two local minima of potential energy can rest in either of the two stable equilibrium states in the absence of external loadings. A snap-through action may occur under suitable stimuli and/or loading, during which such systems exhibit distinct properties from linear structures. Such kinds of structures have been widely exploited for designing advanced functional systems for a variety of applications. Here, the advances of bistable structures are summarized for novel advanced functional systems, including actuators, energy harvesters, microelectromechanical systems (MEMS), robotics, energy absorbers, and programmable devices as well as metamaterials. The controllable snap-through motions are highlighted in the nonlinear structures of bistability/multistability. Finally, the major principles, structures, pros and cons, and the future research directions along with its challenges are discussed.

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“…Bistable mechanisms are at the basis of many advances engineering applications [Cao et al, 2021, Zhang et al, 2019, including Micro-Electro-Mechanical-Systems [Charlot et al, 2008, Pane andAsano, 2008], micro-robotics, non-volatile memories, medical endoscopy (guiding mechanism in small diameter blood vessels) [Schomburg and Goll, 1998], tactile surfaces for visually impaired people [Chouvardas et al, 2008, Vitushinsky et al, 2009. Their nonlinear dynamical properties are widely exploited for energy harvesting [Cottone et al, 2009a, Emam and Inman, 2015, Van Blarigan and Moehlis, 2016, Zhu and Zu, 2013 and shape control applications [Fernandes et al, 2010, Hagood et al, Schoeftner et al, 2015.…”

Section: Introductionmentioning

confidence: 99%