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Pun, D.; 刘玉标,

doi:10.1023/a:1008309409223

Cited by 37 publications

(4 citation statements)

References 12 publications

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“…This type of NES is coupled to the primary structure through non-smooth piecewise nonlinearities with optimizable clearances and stiffness characteristics. In [118], the clearance zone separates two regions of nonzero linear stiffness values whereas in [119], the clearance zone separates the zero-stiffness region within the clearance zone from the nonzero stiffness elements that were coupled with the linear structure at the clearance boundaries, as shown in Fig. 4b.…”

Section: Other Kinds or Modified Nessmentioning

confidence: 99%

A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types

2022

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Dynamical and structural systems are susceptible to sudden excitations and loadings such as wind gusts, blasts, earthquakes, and others which may cause destructive vibration amplitudes and lead to catastrophic impact on human lives and economy. Therefore, various vibration absorbers of linear and nonlinear coupling dynamics have been widely studied in plenty of publications where some have been applied in real-world practical applications. Firstly, the tuned-mass-damper (TMD), the first well-known linear vibration absorber that has been well-studied in the literature and applied with various structural and dynamical systems, is discussed. The linear vibration absorbers such as TMDs are widely used in real-life small- and large-scale structures due to their robust performance in vibration suppression of the low natural frequency structural modes. However, the TMD performs efficiently at narrowband frequency range where its performance is deteriorated by any changes in the frequency content in the structure and the TMD itself. Therefore, the targeted-energy-transfer mechanism which is found to be achieved by nonlinear energy sinks (NESs) has ignited the interest in passive nonlinear vibration suppression. Unlike TMDs, the NESs are dynamical vibration absorbers that achieve vibration suppression for wide range of frequency-energy levels. Given the very rapid growth in this field and the extensive research studies supporting the robustness of the NESs, this paper presents the different types of NESs and their applications with main emphasis on the rotary-based and impact-based NESs since they are of high impact in the literature due to their strong nonlinear dynamical behavior and robust targeted energy transfer.

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Section: Other Kinds or Modified Nessmentioning

confidence: 99%

A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types

2022

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“…Roberson (1952) has indicated that introducing nonlinear stiffness to DVAs is beneficial to expanding the vibration reduction frequency band and enhancing the robustness of DVAs. There are many kinds of NLDVAs, such as cubic stiffness NLDVAs (Oueini et al ., 1999), piecewise stiffness NLDVAs (Pun and Liu, 2000) and tuned stiffness NLDVAs (Walsh and Lamancusa, 1992). Nonlinear Energy Sink (NES) is a kind of NLDVA that can make the vibration energy targeted transferred to itself from the primary structure and dissipated by the damping of the NES.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental study of a novel triple-magnet magnetic dynamic vibration absorber with tunable stiffness

Chen

Leng

Sun

et al. 2023

JIMSE

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PurposeThe existing Nonlinear Dynamic Vibration Absorbers (NLDVAs) have the disadvantages of complex structure, high cost, high installation space requirements and difficulty in miniaturization. And most of the NLDVAs have not been applied to reality. To address the above issues, a novel Triple-magnet Magnetic Dynamic Vibration Absorber (TMDVA) with tunable stiffness, only composed of triple cylindrical permanent magnets and an acrylic tube, is designed, modeled and tested in this paper.Design/methodology/approach(1) A novel TMDVA is designed. (2) Theoretical and experimental methods. (3) Equivalent dynamics model.FindingsIt is found that adjusting the magnet distance can effectively optimize the vibration reduction effect of the TMDVA under different resonance conditions. When the resonance frequency of the cantilever changes, the magnet distance of the TMDVA with a high vibration reduction effect shows an approximately linear relationship with the resonance frequency of the cantilever which is convenient for the design optimization of the TMDVA.Originality/valueBoth the simulation and experimental results prove that the TMDVA can effectively reduce the vibration of the cantilever even if the resonance frequency of the cantilever changes, which shows the strong robustness of the TMDVA. Given all that, the TMDVA has potential application value in the passive vibration reduction of engineering structures.

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“…Roberson (1952: 205–220) has indicated that introducing nonlinear stiffness to DVAs can expand the vibration reduction frequency band and enhance the robustness of DVAs. There are many kinds of NLDVAs, such as cubic stiffness NLDVAs (Oueini et al, 1999: 283–295), piecewise stiffness NLDVAs (Pun and Liu, 2000: 393–413), and tuned stiffness NLDVAs (Walsh and Lamancusa, 1992: 195–211), et al Nonlinear Energy Sink (NES) is a kind of NLDVA that can make the vibration energy targeted transferred to itself from the primary structure and dissipated through the damping. NES was first proposed and named by Vakakis (2001: 324–332).…”

Section: Introductionmentioning

confidence: 99%

Research on dynamic characteristics of a novel triple-magnet magnetic suspension dynamic vibration absorber

Chen

Leng

Fan

et al. 2023

Journal of Vibration and Control

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A novel Triple-magnet Magnetic Suspension Dynamic Vibration Absorber is designed and modeled in this paper. The equivalent dynamic model of the Triple-magnet Magnetic Suspension Dynamic Vibration Absorber vibration reduction system is established. Meanwhile, the calculation model of the nonlinear magnetic suspension force is derived. Based on the force model, it is found that the nonlinear stiffness feature can be adjusted by changing the magnet distance of the Triple-magnet Magnetic Suspension Dynamic Vibration Absorber. Then the dynamic equations of the vibration reduction system are solved by using the Complex Variable Average method. And the correctness of the derivation procedure is verified through the Runge–Kutta method. From the numerical solutions, bifurcation phenomena occur in the system responses when the excitation amplitude is larger than a certain value. Adjusting the magnet distance and the damping coefficient of the Triple-magnet Magnetic Suspension Dynamic Vibration Absorber can delay or avoid bifurcation behaviors. When the excitation amplitude varies over a wide range, the Triple-magnet Magnetic Suspension Dynamic Vibration Absorber with a larger magnet distance and damping coefficient shows better vibration reduction performance. This study provides a theoretical basis for the practical application of the Triple-magnet Magnetic Suspension Dynamic Vibration Absorber and new ideas for controlling the bifurcation of traditional nonlinear dynamic vibration absorbers.

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Untitled

Cited by 37 publications

References 12 publications

A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types

A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types

Theoretical and experimental study of a novel triple-magnet magnetic dynamic vibration absorber with tunable stiffness

Research on dynamic characteristics of a novel triple-magnet magnetic suspension dynamic vibration absorber

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