Comparison of a modified vibro-impact nonlinear energy sink with other kinds of NESs

AL-Shudeifat, Mohammad A.; Saeed, Adnan S.

doi:10.1007/s11012-020-01193-3

Cited by 45 publications

(14 citation statements)

References 54 publications

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“…From the technological point of view, a NES can be obtained, for example, by a mass moving transversely in a nonlinear potential [14][15][16][17], by magnetic forces [12,18,19], by coupling a rotating mass with a primary structure [20], by a mass sliding on a curved track [21] and by vibro-impact systems [22]. Configurations of vibro-impact systems include rotary NESs [23], track NESs [24] and vibro-impact NESs.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [26] suggested adopting multiple VI NESs in conjunction with NESs having cubic nonlinearity for seismic mitigation. Another relevant design parameter of the VI NES, the particle-to-container mass ratio, is generally constrained by technological requirements and by the absorber's position over the primary structure, whereas the coefficient of restitution depends on the material properties and can be optimized under free vibrations [22].…”

Section: Introductionmentioning

confidence: 99%

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Finite contact duration modeling of a Vibro-Impact Nonlinear Energy Sink to protect a civil engineering frame structure against seismic events

Feudo

Job

Cavallo

et al. 2022

Engineering Structures

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite contact duration modeling of a Vibro-Impact Nonlinear Energy Sink to protect a civil engineering frame structure against seismic events

Feudo

Job

Cavallo

et al. 2022

Engineering Structures

View full text Add to dashboard Cite

“…Vibration mitigation is essential to many dynamical and engineering structures that are subjected to destructive vibration amplitudes induced by impulsive loading, seismic excitation, blasts, flutter, collisions, fluid-structure interaction and so on. Unprotected structures by vibration absorbers could be exposed to failure, which lead to enormous losses in human lives, major equipment and economy [1]. In the past two decades, a nonlinear oscillator without linear stiffness, termed as a nonlinear energy sink, has received much attention due to its passive vibration reduction characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…The resulting TET, (which can occur in a broadband fashion) significantly reduces the level of vibration of the primary structure. This TET is usually achieved through single or cascade of resonance captures with the associated linear primary structure [1]. There are comprehensive reviews of state-of-the-art researches on NESs [4][5][6][7], monographs [8,9], and numerous articles on this problem [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Choice of the Model for Vibro-impact Nonlinear Energy Sink

Lizunov

Pogorelova

Postnikova

2022

OMTC

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The nonlinear energy sink (NES) is defined as a single-degree-of-freedom structural element with relatively small mass and weak dissipation, attached to a primary structure via essentially nonlinear coupling. It is a passive energy dissipation device designed to rapidly absorb vibration energy (due to shock, blast, earthquakes, etc.) from a primary structure and locally dissipate it. The article contains a mini-review of the works on NESs. Design schemes for single-sided and double-sided vibro-impact NESs (SSVI and DSVI NESs) are proposed on the basis of conceptual and design NES schemes that exist in the world scientific literature. The motion equations and the impact rule are given. The quasistatic Hertz contact law is adopted as the impact rule. Various representations of the impulsive loading on the primary structure are discussed. These are excitations by initial velocities only, periodic excitation, a shock in the half-sine form, single-sided periodic impulses of a rectangular shape,wind, seismic and broadband excitation. The Tables of some numerical parameters that can be accepted for VI NES are given. Using the presented data, the authors intend to investigate both the efficiency of SSVI and DSVI NESs under different types of impulsive load, and their dynamical behavior with the changing in their parameters.

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“…The numerical verification confirms that the energy dissipation is almost constant with optimal TET under various impulse excitations. The performances of several types of NES, such as bistable NES, piecewise NES, rotary NES and vibro-impact NES are investigated under the initial induced impulse energy in detail [22]. Among them, the enhanced single side vibro-impact NES shows the best performance in reducing the induced impact acceleration.…”

Section: Introductionmentioning

confidence: 99%

Basic Constraints for Design Optimization of Cubic and Bistable Nonlinear Energy Sink

Seguy

Paredes

2021

Journal of Vibration and Acoustics

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This work mainly concentrates on the optimization of cubic and bistable NES to find the maximum efficiency point under harmonic excitation. The conservative system is considered to reveal the inner property of the damping system. With the application of the multiple scales method and the complex variables method, the threshold of excitation and different response regimes are distinguished under the assumption of 1:1 resonance. The maximum efficiency point of cubic and bistable NES occurs when SMR disappears. The factors that affect the optimal efficiency limit are explored. The result indicates that the maximum absorption efficiency level is mainly determined by the damping parameters. Compared with the cubic case, the bistable case involves more complex regimes in terms of chaos oscillation. The influence of damping parameters on the chaos threshold is discussed to adopt different energy levels. With the help of analytical predictions, the proper nonlinear stiffness is determined for certain harmonic excitation. This work offers some fundamental insights into the optimal design of cubic and bistable NES.

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Comparison of a modified vibro-impact nonlinear energy sink with other kinds of NESs

Cited by 45 publications

References 54 publications

Finite contact duration modeling of a Vibro-Impact Nonlinear Energy Sink to protect a civil engineering frame structure against seismic events

Finite contact duration modeling of a Vibro-Impact Nonlinear Energy Sink to protect a civil engineering frame structure against seismic events

Choice of the Model for Vibro-impact Nonlinear Energy Sink

Basic Constraints for Design Optimization of Cubic and Bistable Nonlinear Energy Sink

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