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Dynamic Vibration Absorber

About: Dynamic Vibration Absorber is a research topic. Over the lifetime, 4764 publications have been published within this topic receiving 49429 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a metamaterial whose unit cell consists of a dynamic vibration absorber with negative stiffness (NSDVA) was proposed, which exhibits a quasi-static bandgap and negative effective stiffness due to the presence of a negative stiffness element.

32 citations

PatentDOI
TL;DR: In this article, a vibration absorbing apparatus for reducing vibrations of a vibration damping objective comprises a vibration member excited by a piezo-ceramic element, whose voltage is controlled in accordance with the vibration state of the objective.
Abstract: A vibration absorbing apparatus for reducing vibrations of a vibration damping objective comprises a vibration member excited by a piezo-ceramic element. The voltage applied to the piezo-ceramic element is controlled in accordance with the vibration state of the objective.

32 citations

Journal ArticleDOI
TL;DR: In this article, a numerical study of an application of magnetorheological (MR) damper for semi-active control is presented, where the damper is mounted in the suspension of a Duffing oscillator with an attached pendulum, and two methods for the dynamics control in the closed-loop algorithm based on amplitude and velocity of the pendulum and the impulse on-off activation of MR damper are proposed.
Abstract: A numerical study of an application of magnetorheological (MR) damper for semi-active control is presented in this paper. The damper is mounted in the suspension of a Duffing oscillator with an attached pendulum. The MR damper with properties modelled by a hysteretic loop, is applied in order to control of the system response. Two methods for the dynamics control in the closed-loop algorithm based on the amplitude and velocity of the pendulum and the impulse on–off activation of MR damper are proposed. These concepts allow the system maintaining on a desirable attractor or, if necessary, to change a position from one attractor to another. Additionally, the detailed bifurcation analysis of the influence of MR damping on the number of periodic solutions and their stability is shown by continuation method. The influence of MR damping on the chaotic behavior is studied, as well.

32 citations

Journal ArticleDOI
TL;DR: In this article, a modified absorber with inertia effect of the spring mass considered is presented and the forced vibration analyses of a single degree-of-freedom (dof) and a multiple dof structural systems are performed.

32 citations

Journal ArticleDOI
Gaoyu Liu1, Lu Kun1, Donglin Zou1, Zhongliang Xie1, Zhushi Rao1, Na Ta1 
TL;DR: In this paper, a semi-active dynamic vibration absorber (SDVA) was designed based on the magnetic-induced variable stiffness characteristic of the MRE's magnetic properties, which can be used as variable-stiffness components in the design of a SDVA.
Abstract: The control of the longitudinal pulsating force and the vibration generated is very important to improve the stealth performance of a submarine. Magnetorheological elastomer (MRE) is a kind of intelligent composite material, whose mechanical properties can be continuously, rapidly and reversibly controlled by an external magnetic field. It can be used as variable-stiffness components in the design of a semi-active dynamic vibration absorber (SDVA), which is one of the effective means of longitudinal vibration control. In this paper, an SDVA is designed based on the MRE's magnetic-induced variable stiffness characteristic. Firstly, a mechanical model of the propulsion shaft system with the SDVA is proposed, theoretically discussed and numerically validated. Then, the mechanical performance of the MRE under different magnetic fields is tested. In addition, the magnetic circuit and the overall structure of the SDVA are designed. Furthermore, electromagnetic and thermodynamic simulations are carried out to guarantee the structural design. The frequency shift property of the SDVA is found through dynamic simulations and validated by a frequency shift experiment. Lastly, the vibration absorption capacity of the SDVA is investigated. The results show that the magnetorheological effect of the MRE and the frequency shift of the SDVA are obvious; the SDVA has relatively acceptable vibration absorption capacity.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202347
2022120
2021134
2020162
2019215
2018206