Results 11 to 20 of about 213,448 (306)

Damping force switching type electromagnetic damper using relay and capacitor

open access: yesNihon Kikai Gakkai ronbunshu, 2022
In general, semiactive dampers have high performance of vibration control compared to passive dampers, but in order to adjust an optimized damping force for the damper, several condition of vibration systems, such kind of force, acceleration and ...
Taichi MATSUOKA, Taichi NAKAZAWA
doaj   +1 more source

An optimized tuned mass damper/harvester device [PDF]

open access: yes, 2014
Much work has been conducted on vibration absorbers, such as tuned mass dampers (TMD), where significant energy is extracted from a structure. Traditionally, this energy is dissipated through the devices as heat.
Burrow, Steve G   +5 more
core   +3 more sources

Multiple-TMD-Based Structural Vibration Control for Pumped Storage Power Plants

open access: yesApplied Sciences, 2020
The high-frequency resonance in the superstructure of a pumped storage power station (PSPP) due to the generation unit can shorten the service life of the power station structure and even endanger its safety.
Tengfei Zhong   +3 more
doaj   +1 more source

What does the vibration therapy add?: a quasi-experimental, pilot study on the short term effects of whole-body vibration as mode of exercise for nursing home residents aged 80+ [PDF]

open access: yes, 2018
Aims: To compare the responses of nursing home residents aged 80+ to an 8 weeks exercise program performed on a vibratory device and to the same exercise program preformed without vibration on lower limb performance, functional dependence and quality ...
Alfonso Rosa, Rosa Mª   +3 more
core   +1 more source

Fatiguing Effects of Indirect Vibration Stimulation in Upper Limb Muscles- pre, post and during Isometric Contractions Superimposed on Upper Limb Vibration [PDF]

open access: yes, 2019
© 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ , which permits unrestricted use, provided the original author and source are credited.Whole-body ...
Cardinale, Marco   +2 more
core   +3 more sources

Performance analysis of active dynamic vibration absorber controlled by homogeneous control Lyapunov functions

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Active dynamic vibration absorbers are widely known as vibration control device exhibiting good performance for disturbance signal with various frequencies. Linear quadratic (LQ) control is often used in active dynamic vibration absorbers.
Yûki NISHIMURA   +3 more
doaj   +1 more source

A preliminary study for evaluating immediate post-vibration effects of whole body vibration on postural control

open access: yesTürk Spor ve Egzersiz Dergisi, 2017
The aim of the preliminary study was to evaluate body sways simultaneously in mediolateral (ML) and anteroposterior (AP) directions of postural control measurements immediately after vibration stimulus. The participants were exposed to vibration stimulus
İzzet Kırkaya   +2 more
doaj   +1 more source

Development of a Two-Dimensional Ultrasonic Device for Vibration-Assisted Milling

open access: yesMachines, 2022
Two-dimensional vibration-assisted machining (VAM) is a technique used to improve the cutting performance of machining processes by reducing the cutting forces and the temperature, extending the tool life, and improving the surface quality.
Engy Osama Rashed   +3 more
doaj   +1 more source

Nonlinear characterization of half and full wavelength power ultrasonic devices [PDF]

open access: yes, 2016
It is well known that power ultrasonic devices whilst driven under elevated excitation levels exhibit nonlinear behaviors. If no attempt is made to understand and subsequently control these behaviors, these devices can exhibit poor performance or even ...
Cardoni, Andrea   +2 more
core   +1 more source

A dual adaptive tunable vibration absorber using MREs for vehicle powertrain vibration control [PDF]

open access: yes, 2010
This paper presents a dual Adaptive Tuned Vibration Absorber (ATVA) using a magnetorheological elastomer (MRE) for powertrain torsional vibration control. The MRE used in this device is a soft MRE with a significant MR effect.
Du, H, Hoang, N, Zhang, N
core   +2 more sources

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