The tuned bistable nonlinear energy sink

Habib, Giuseppe; Romeo, Francesco

doi:10.1007/s11071-017-3444-y

Cited by 116 publications

(55 citation statements)

References 27 publications

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“…From (27) we see that the multi-mode description of the system has a form that is very similar to that of the 1DOF example,ẍ − bx (h being the beam width), as to be able to predict at least the frequencies of the first two linear modes. Moreover it is better to increase the buckling even further, as to account for a pres-tress that usually exists in the beam: a higher buckling will decrease its effect on the absorber dynamics.…”

Section: Numerical Model Of the Absorbermentioning

confidence: 82%

“…One of the possible ways to improve current BNES design is to make use of as many regimes as possible. Such attempts to combine different regimes were already taken in [27], where the authors tried to use a low-amplitude linear regime of a bi-stable NES to create a Tuned Mass Hence, the tuning of the two TET regimes is very difficult to achieve. In this context, as the presented BNES possesses extra tuning parameters brought by the attached mass the design can lead to a more efficient Nonlinear Energy Sink.…”

Section: Resultsmentioning

confidence: 99%

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Bistable nonlinear damper based on a buckled beam configuration

Iurasov

Mattei

2019

Nonlinear Dyn

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This article addresses a particular realization of a compact bistable nonlinear absorber based on the concept of Nonlinear Energy Sink. The article presents both a detailed description of the absorber mechanics and an illustration of the targeted energy transfer between the absorber and a linear system. The experimental results are accompanied with the numerical simulations. Beside practical improvements linked to the features of absorber design, the obtained results stay in line with those found for simpler realizations of a bistable Nonlinear Energy Sinks.

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Section: Numerical Model Of the Absorbermentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Bistable nonlinear damper based on a buckled beam configuration

Iurasov

Mattei

2019

Nonlinear Dyn

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“…Possessing a nonlinear restoring force, the NES is able to interact with the primary structure virtually at any frequency [24][25][26]. Similarly, vibro-impact [27,28], visco-hysteretic [29], rotational [30,31], bistable [32][33][34] and other variants of vibration absorbers [35] exploit analogous phenomena, obtaining a broadband energy dissipation. Most of these vibration absorbers share the drawback that their performance strongly depends on the energy level of the system.…”

Section: Introductionmentioning

confidence: 99%

“…Most of these vibration absorbers share the drawback that their performance strongly depends on the energy level of the system. In general, for low energy level they experience a drop in efficiency (although some of the mentioned vibration absorbers partially overcome this limitation [31,34]).…”

Section: Introductionmentioning

confidence: 99%

Impulsive vibration mitigation through a nonlinear tuned vibration absorber

Habib

Papp

2019

Nonlinear Dyn

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The dynamics of a nonlinear passive vibration absorber conceived to mitigate vibrations of a nonlinear host structure is considered in this paper.The system under study is composed of a primary system, consisting of an undamped nonlinear oscillator of Duffing type, and a nonlinear dynamic vibration absorber, denominated nonlinear tuned vibration absorber (NLTVA). The NLTVA consists of a small mass, attached to the host structure through a linear damper, a linear and a cubic spring. The host structure is subject to free vibrations and the performance of the NLTVA is evaluated with respect to the minimal time required to dissipate a specific amount of the mechanical energy of the system. In order to characterize the dynamics of the system, a combination of numerical and analytical techniques is implemented. In particular, on the basis of the first-order reduced model, slow invariant manifolds of the transient dynamics are identified, which enable to estimate the absorber performance. Results illustrate that two different dynamical paths exist and the system can undergo either of them, depending on the initial conditions and on the value of the absorber nonlinear stiffness coefficient. One path leads to a very fast vibration mitigation, and therefore to a favorable behavior, while the other one causes a very slow energy dissipation.

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“…The translational stiffness-based NESs employ an essentially nonlinear (usually cubic) stiffness coupling element to attach the NES mass to a floor in the primary structure [1]. Several enhancements have been proposed to this type where the addition of a linear or nonlinear damping elements [2], additional nonlinearly coupled mass [2][3], additional lateral stiffness elements [4] and negative, unsymmetrical or variable nonlinear stiffness components [5][6][7][8][9][10] are analyzed for increasing the efficiency of the energy transfer and dissipation. Impact-based NESs employ a linearly coupled NES mass in addition to rigid barriers in the motion domain of the NES to engage in non-smooth impacts that integrate the essential nonlinear property required for cascades of resonance captures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Changing the Coefficient of Restitution of a Single-Sided Vibro-Impact Nonlinear Energy Sink in a Two-Story Structure

Saeed¹,

AL-Shudeifat²

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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In many applications of structural dynamics, it is desirable to transfer energy from a primary system using a dynamic absorber to protect the structure from destructive vibration amplitudes. Nonlinear Energy Sinks (NESs) are local attachments used to rapidly and passively dissipate energy from a primary structure in a phenomenon known as Targeted Energy Transfer (TET). Consequently, many types of NESs, which incorporate an essential nonlinear property, have been proposed, designed and tested in the literature. Based on numerical and experimental investigations of these types, Single-Sided Vibro-Impact (SSVI) NESs, where impacts, usually between the top floor of the primary structure and the NES, are utilized to further dissipate energy, proved to be the most efficient for TET in small-and large-scale structures. In literature, researchers have mostly considered steel-to-steel impacts which correspond to a coefficient of restitution of approximately 0.7. In this work, the effect of changing this coefficient of restitution is analyzed and investigated in a two-story physical primary structure. The coupled systems are optimized to achieve the maximum energy transfer and dissipation by measuring the normalized weighted-averaged effective modal damping criteria. It is found that lowering the coefficient of restitution increases the capability of the SSVI NES to transfer and dissipate initial energy induced into a primary structure for a wide range of impulsive excitations.

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The tuned bistable nonlinear energy sink

Cited by 116 publications

References 27 publications

Bistable nonlinear damper based on a buckled beam configuration

Bistable nonlinear damper based on a buckled beam configuration

Impulsive vibration mitigation through a nonlinear tuned vibration absorber

Effect of Changing the Coefficient of Restitution of a Single-Sided Vibro-Impact Nonlinear Energy Sink in a Two-Story Structure

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