Large-scale vibration energy harvesting

Zuo, Lei; Tang, Xiudong

doi:10.1177/1045389x13486707

Cited by 235 publications

(112 citation statements)

References 101 publications

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“…Comprehensive review of the contemporary knowledge regarding EH in large scale facilities is presented in papers [70] and [71]. Relevant principles are based again on EH assisted by SR phenomena.…”

Section: Large Scale Application and Vibration Dampingmentioning

confidence: 99%

Stochastic Resonance and Related Topics

Náprstek¹,

Fischer²

2017

Resonance

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The stochastic resonance (SR) is the phenomenon which can emerge in nonlinear dynamic systems. In general, it is related with a bistable nonlinear system of Duffing type under additive excitation combining deterministic periodic force and Gaussian white noise. It manifests as a stable quasiperiodic interwell hoppingbetweenbothstablestateswithasmall random perturbation. Classical definition and basic features of SR are regarded. The most important methods of investigation outlined are: analytical, semi-analytical, and numerical procedures of governing physical systems or relevant Fokker-Planck equation. Stochastic simulation is mentioned and experimental way of results verification is recommended. Some areas in Engineering Dynamics related with SR are presented together with a particular demonstration observed in the aeroelastic stability. Interaction of stationary and quasiperiodic parts of the response is discussed. Some nonconventional definitions are outlined concerning alternative operators and driving processes are highlighted. The chapter shows a large potential of specific basic, applied and industrial research in SR. This strategy enables to formulate new ideas for both development of nonconventional measures for vibration damping and employment of SR in branches, where it represents an operating mode of the system itself. Weaknesses and empty areas where the research effort of SR should be oriented are indicated.

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Section: Large Scale Application and Vibration Dampingmentioning

confidence: 99%

Stochastic Resonance and Related Topics

Náprstek¹,

Fischer²

2017

Resonance

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“…The scale of such systems can vary from miniaturized devices for low-power wireless sensors [40], to devices designed to harvest power from human motion [41], to large-scale devices powered by ocean waves or large structures [42,43]. If driven at resonance, the harvested power is, in principle, maximized if the electromechanical damping is very small, so that the motion of the inertial mass is very high [44], but the maximum extent of this motion, the maximum throw, is generally limited by practical construction constraints.…”

Section: (C) Energy Harvestingmentioning

confidence: 99%

Nonlinear damping and quasi-linear modelling

Elliott

Tehrani

Langley

2015

Phil. Trans. R. Soc. A.

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The mechanism of energy dissipation in mechanical systems is often nonlinear. Even though there may be other forms of nonlinearity in the dynamics, nonlinear damping is the dominant source of nonlinearity in a number of practical systems. The analysis of such systems is simplified by the fact that they show no jump or bifurcation behaviour, and indeed can often be well represented by an equivalent linear system, whose damping parameters depend on the form and amplitude of the excitation, in a ‘quasi-linear’ model. The diverse sources of nonlinear damping are first reviewed in this paper, before some example systems are analysed, initially for sinusoidal and then for random excitation. For simplicity, it is assumed that the system is stable and that the nonlinear damping force depends on the n th power of the velocity. For sinusoidal excitation, it is shown that the response is often also almost sinusoidal, and methods for calculating the amplitude are described based on the harmonic balance method, which is closely related to the describing function method used in control engineering. For random excitation, several methods of analysis are shown to be equivalent. In general, iterative methods need to be used to calculate the equivalent linear damper, since its value depends on the system’s response, which itself depends on the value of the equivalent linear damper. The power dissipation of the equivalent linear damper, for both sinusoidal and random cases, matches that dissipated by the nonlinear damper, providing both a firm theoretical basis for this modelling approach and clear physical insight. Finally, practical examples of nonlinear damping are discussed: in microspeakers, vibration isolation, energy harvesting and the mechanical response of the cochlea.

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“…Therefore, clean, low-cost and labour-free, alternative sources of energy have been the subject of active research in the past decade, especially in order to power wireless devices, such as sensor networks for monitoring various systems [4,5]. Among various concepts, harvesting energy from vibrations has gained much attention (see for example, [4][5][6][7][8]). Although attaching additional vibrationinduced energy harvesting components to a car may be feasible, a more elegant solution is by exploiting the use of the available components on the car.…”

Section: Introductionmentioning

confidence: 99%

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

Rasani¹,

Aldlemy

Harun³

2017

J. MECH. ENG. SCI.

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Increasing environmental and energy concerns constitutes an encouraging development of future automobiles and autonomous vehicles that utilize cleaner and renewable energy. Although primarily an aerodynamic device, car rear spoilers experience various vibrations and limited attention has been given to exploiting these vibrations for generating alternative energy. This paper aims to investigate the potential of using the flow-induced vibration of rear spoilers on automobiles for energy harvesting. To that end, a fluid-structure interaction analysis of an inverted NACA 2408 spoiler behind an Ahmed body was undertaken. An Arbitrary Lagrangian-Eulerian flow solver was coupled to a non-linear structural dynamic solver using a commercial software application. The vibrations of the rear spoiler placed at 0, 50 and 100 mm below the top face of the Ahmed body under Reynolds number Re = 2.7 × 10 6 were simulated. It was found that the vibration of the rear spoiler at the highest elevation showed the largest amplitudes and strain, but the vibration of the rear spoiler at the lowest elevation offers an extended period of vibration before reaching a steady state. With the rear spoiler positioned at the highest elevation, a vibration frequency of 70 Hz and a steady-state principal strain of 350  may be achieved. These vibration levels compared well with previous investigation to sufficiently charge storage capacitors for wireless transmitters. The rear spoiler vibration may offer potential means for energy harvesting, and warrants further experiments under actual driving conditions.

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Large-scale vibration energy harvesting

Cited by 235 publications

References 101 publications

Stochastic Resonance and Related Topics

Stochastic Resonance and Related Topics

Nonlinear damping and quasi-linear modelling

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

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