Results 1 to 10 of about 1,759 (118)
Investigation of Nonlinear Piezoelectric Energy Harvester for Low-Frequency and Wideband Applications [PDF]
Micromachines, 2022 This paper proposes a monostable nonlinear Piezoelectric Energy Harvester (PEH). The harvester is based on an unconventional exsect-tapered fixed-guided spring design, which introduces nonlinearity into the system due to the bending and stretching of the
Osor Pertin +4 more
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Magnetic Bistability for a Wider Bandwidth in Vibro-Impact Triboelectric Energy Harvesters [PDF]
Micromachines, 2023 Mechanical energy from vibrations is widespread in the ambient environment. It may be harvested efficiently using triboelectric generators. Nevertheless, a harvester’s effectiveness is restricted because of the limited bandwidth.
Qais Qaseem, Alwathiqbellah Ibrahim
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Static and Dynamic Analysis of a Bistable Frequency Up-Converter Piezoelectric Energy Harvester [PDF]
Micromachines, 2023 Using energy harvesting to convert ambient vibrations efficiently to electrical energy has become a worthy concept in recent years. Nevertheless, the low frequencies of the ambient vibrations cannot be effectively converted to power using traditional ...
Mohammad Atmeh +2 more
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Varying the direction of propagation in reaction-diffusion equations in periodic media [PDF]
Networks and Heterogeneous Media, 2016 We consider a multidimensional reaction-diffusion equation of either ignition or monostable type, involving periodic heterogeneity, and analyze the dependence of thepropagation phenomena on the direction.
Matthieu Alfaro, Thomas Giletti
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Existence and Uniqueness of Solutions to a Nonlocal Equation with Monostable Nonlinearity [PDF]
SIAM Journal on Mathematical Analysis, 2011 Let $J \in C(\mathbb{R})$, $J\ge 0$, $\int_{\tiny$\mathbb{R}$} J = 1$ and consider the nonlocal diffusion operator $\mathcal{M}[u] = J \star u - u$. We study the equation $\mathcal{M} u + f(x,u) = 0$, $u \ge 0$, in $\mathbb{R}$, where $f$ is a KPP-type ...
Juan Dávila +4 more
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Electronic Journal of Differential Equations, 2023 This article focuses on the nonplanar traveling fronts of degenerate monostable time periodic reaction-diffusion equations in Rn with n≥3. By constructing a couple of proper supersolution and subsolution, we prove the existence of periodic pyramidal traveling front in R3 and then in Rn with n>3.
Zhen-Hui Bu +2 more
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Advances in Nonlinear AnalysisThis article is concerned with the stability of time-periodic traveling fronts for reaction–diffusion equations with time-periodic degenerate monostable and ignition nonlinearities.
Liu Yuan-Hao, Bu Zhen-Hui, Zhang Suobing
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Dynamic characteristics of monostable acoustic metamaterial absorber
Xi'an Gongcheng Daxue xuebao, 2022 Given at the problem of narrow low-frequency absorption bandwidth of monostable acoustic metamaterial absorber, the Lindstedt-Poincare method was applied to investigate the vibration response and frequency amplitude response characteristics of the ...
YANG Sen +3 more
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Robust design optimization of a nonlinear monostable energy harvester with uncertainties [PDF]
Meccanica, 2020 AbstractBased on the improved interval extension, a robust optimization method for nonlinear monostable energy harvesters with uncertainties is developed. In this method, the 2nd order terms in the interval extension formula of the objective function (output voltage) are kept so this approach is suitable for a nonlinear energy harvesting system.
Yi Li, Shengxi Zhou, Grzegorz Litak
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Nonlocal anisotropic dispersal with monostable nonlinearity
Journal of Differential Equations, 2008 We study the travelling wave problem J\astu - u - cu' + f (u) = 0 in R, u(-\infty) = 0, u(+\infty) = 1 with an asymmetric kernel J and a monostable nonlinearity. We prove the existence of a minimal speed, and under certain hypothesis the uniqueness of the profile for c = 0. For c = 0 we show examples of nonuniqueness.
Coville, Jérôme +2 more
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