A tunable dynamic vibration absorber for unbalanced rotor system

Yao, Hongliang; Wang, Tongzhao; Wen, Bangchun; Qiu, Baijun

doi:10.1007/s12206-018-0305-7

Cited by 18 publications

(10 citation statements)

References 16 publications

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“…In [88] a tunable vibration absorber for unbalanced rotor system is proposed. The assigned antiresonance can be adjusted by changing the distance between the outer magnet and the inner magnet of the magnetic spring composing the absorber.…”

Section: Antiresonance Assignment In Industrial Devices and Machinesmentioning

confidence: 99%

Active Approaches to Vibration Absorption through Antiresonance Assignment: A Comparative Study

Richiedei

Tamellin

2021

Applied Sciences

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Vibration absorption is a core research topic in structural dynamics and the mechanics of machines, and antiresonance assignment is an effective solution to such a problem in the presence of harmonic excitation forces. Due to recent developments in the theory of feedback control systems, the use of active control approaches to antiresonance assignment has been recently gaining more attention in the literature. Therefore, several methods exploiting state feedback or output feedback have been proposed in recent years. These techniques that just rely on servo-controlled actuators are becoming an interesting alternative to active approaches that emulate the well-known Tuned Mass Damper in an active (or semi-active) framework. This paper reviews and compares the most important approaches, with a greater focus on the methods exploiting the concept of control theory without adding new degrees of freedom in the system. The theoretical results, with the underlying theory, are discussed to highlight the key features of each assignment techniques. Several numerical examples where different techniques are applied and compared, also providing some analysis usually neglected in the literature, enrich the paper and demonstrate the key concepts.

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Section: Antiresonance Assignment In Industrial Devices and Machinesmentioning

confidence: 99%

Active Approaches to Vibration Absorption through Antiresonance Assignment: A Comparative Study

Richiedei

Tamellin

2021

Applied Sciences

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“…They are used in different machines and structures; differ in weight and dimensions, design features, application ranges. An example of the different locations of DVA is analyzed in [1][2][3][4][5][6][7][8][9].…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Vibration impact and noise protection devices with DVA for wheeled vehicles

Diveev¹

2020

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The article investigates vibration and noise protection devices for wheeled vehicles using dynamic vibration absorbers (DVA). Algorithms for modeling their dynamic characteristics based on adaptive calculation schemes are presented. A non-linear suspension with DVA and a noise-absorbing partition is considered, which is due to the introduction of a layered composite thin-walled structure with an intermediate damping layer with high damping properties and a DVA system, which provides better vibration and noise absorption. The problems of shock propagation during the overturn of the bus to passengers are also considered. The influence of the parameters of the shock absorber on the dynamic properties of the bus is investigated. The optimal parameters of the shock absorber are determined.

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“…In these cases, they provide contactless support of at least one degree of freedom and again without damping. A magnetic spring has been also been used in negative stiffness vibration dampers [29,30]. However, these solutions are not valid for space applications where cleanness is required.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Test of an Integrated Magnetic Spring-Eddy Current Damper for Space Applications

et al. 2021

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We present the design, manufacturing, and dynamical characterization of a mechanical suspension made by a passive magnetic spring and an eddy current damper integrated into a single device. Three configurations with 2, 3, and 4 permanent magnets axially distributed with opposite polarizations are designed, simulated, manufactured, and tested. Stiffness of 2410, 2050, 2090 N/m and damping coefficient of 5.45, 10.52 and 17.25 Ns/m are measured for the 2-, 3-, and 4-magnets configurations, respectively. The magnetic suspension provides good mechanical properties combined with excellent cleanness and high reliability, which is very desirable in mechanical systems for space applications.

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A tunable dynamic vibration absorber for unbalanced rotor system

Cited by 18 publications

References 16 publications

Active Approaches to Vibration Absorption through Antiresonance Assignment: A Comparative Study

Active Approaches to Vibration Absorption through Antiresonance Assignment: A Comparative Study

Vibration impact and noise protection devices with DVA for wheeled vehicles

Modelling and Test of an Integrated Magnetic Spring-Eddy Current Damper for Space Applications

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