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Parameter optimization analysis of rotary electromagnetic vibration energy harvester for performance enhancement under free vibration [PDF]

open access: yesiScience, 2023
Summary: In this paper, three new important aspects of rotary electromagnetic vibration energy harvesting technology (RE-VEH) are concerned and investigated: (i) vibro-electric coupling mechanism of the RE-VEH system is studied through theoretical ...
Juhuang Song   +6 more
doaj   +2 more sources

Free In-Plane Vibration of Super-Elliptical Plates

open access: greenShock and Vibration, 2011
Free in-plane vibration of super-elliptical plates of uniform thickness was investigated by the Ritz method. A large variety of plate shapes ranging from an ellipse to a rectangle were examined. Two cases were considered: (1) a completely free, and (2) a
Murat Altekin
doaj   +2 more sources

A time-domain method for free vibration responses of an equivalent viscous damped system based on a complex damping model

open access: yesJournal of Low Frequency Noise Vibration and Active Control, 2023
The free vibration responses are divergent based on a complex time-domain damping model. The traditional step by step integration method cannot be used to calculate the time-domain responses.
Shuxia Wang   +4 more
semanticscholar   +1 more source

Prediction of Tunnel Blasting Vibration Velocity Considering the Influence of Free Surface

open access: yesApplied Sciences, 2023
The blast vibration attenuation will change as the tunnel cut hole is blasted to create a new free surface. To guarantee safe tunnel construction and optimize blast design parameters, it is crucial to understand the impact of the free surface on blast ...
Xiaohui Zeng   +4 more
doaj   +1 more source

Attenuation model of tunnel blast vibration velocity based on the influence of free surface

open access: yesScientific Reports, 2021
In tunnel blasting excavation, it is important to clarify the attenuation law of blast wave propagation and predict the blast vibration velocity effectively to ensure safe tunnel construction and protection design.
Baoxin Jia   +3 more
doaj   +1 more source

A Calculation Model for Vibration Effect Induced by Resonance-Free Vibratory Hammer Method

open access: yesBuildings, 2022
Buildings close to the ground treated by the resonance- free vibratory hammer method are often vulnerable to excessive vibrations. An in situ test of an urban soft site was carried out to investigate the resonance-free vibratory hammer induced vibration ...
Xinjun Cheng   +5 more
doaj   +1 more source

Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

open access: yesApplied Sciences, 2021
Focal vibration therapy can provide neurophysiological benefits. Unfortunately, standardized protocols are non-existent. Previous research presents a wide range of protocols with a wide range of effectiveness.
Mustafa Ghazi   +3 more
doaj   +1 more source

Free vibration and inherent material damping characteristics of boron-FRP plate: influence of non-uniform uniaxial edge loads

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2021
The current investigation presents the analytical investigation on free vibration and inherent material damping of boron-FRP plate, subjected to non-uniform uniaxial edge loads.
Gunasekaran Vijay   +2 more
doaj   +1 more source

Free vibration analysis of a string with vibration suppressor

open access: yesNihon Kikai Gakkai ronbunshu, 2014
When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion.
Hiroyuki KIMURA
doaj   +1 more source

Free Vibration of The System of Two Strings Coupled by a Viscoelastic Interlayer

open access: yesEngineering Transactions, 2015
This paper introduces an analytical method of solving the free vibration problem for a continuous system of two strings coupled by a viscoelastic interlayer.
K. Cabańska-Płaczkiewicz
doaj   +1 more source

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