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

Feudo, Stefania Lo; Job, Stéphane; Cavallo, Miriam; Fraddosio, Aguinaldo; Piccioni, Mario Daniele; Tafuni, Alessandro

doi:10.1016/j.engstruct.2022.114137

Cited by 16 publications

(12 citation statements)

References 69 publications

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“…However, the phase point will eventually jump and be captured again by the SIM and this will cause intervals of 1:1 oscillations with random amplitude and length [99,100]. In [234], two viscoelastic dissipative contact models were implemented in the NES which included instantaneous and finite contact (Tsuji [235] and Kuwabara [236]) models. The resulting NES is similar to the one employed in [95,97,101].…”

Section: Analytical Treatmentmentioning

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: Analytical Treatmentmentioning

confidence: 99%

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

2022

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“…In [1], the authors claim that the performance of the enhanced SSVIe NES of nearly 0.45 coefficient of restitution is found to be more robust to the initial impulsive energy levels and to its physical parameters variation. However, in [22], the authors study the VI NES with a finite contact duration model. They use Hertz model of finite duration collision and compare it with two other models.…”

Section: An Impact Occurs Whenmentioning

confidence: 99%

“…It is assumed that the number of impulse repetitions is so large that the structure oscillations are steady state. In [22], the authors choose the well-known El Centro NS signal (1940) as the primary seismic excitation (Fig. 10).…”

Section: A Shock In the Half-sine Formmentioning

confidence: 99%

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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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“…observed that finite contact duration modeling could avoid these states by low-pass filtering the mechanical responses of the VI NES [13]. Al-Shudeifat et al experimentally demonstrated that a single-sided VI NES has better damping capability than a VI NES for larger vibration shocks [14].…”

Section: Introductionmentioning

confidence: 99%

A negative stiffness inertial nonlinear energy sink

Zhang

Gao

Zhang

et al. 2022

Preprint

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In this paper, a novel negative stiffness inertial nonlinear energy sink (NSI-NES) is proposed. The main structure is simulated as a single-degree-of-freedom linear oscillator. Newton's second law is applied to derive the kinematic equations of the coupled system. Based on the Runge–Kutta numerical solution, the complex dynamical behaviors of the system coupled with the NSI-NES are explored. Moreover, the quasiperiodic solution exhibited a strongly modulated response (SMR). The steady-state response of the system is obtained using the Runge–Kutta and harmonic balance methods and is cross-corroborated. Compared with the inertial nonlinear energy sink (I-NES) and the positive stiffness inertial nonlinear energy sink (PSI-NES), the damping effects of the NSI-NES are highlighted based on various excitations. The results show that the NSI-NES has a damping effect of up to 90%. In addition, the effect of the NSI-NES parameters on the damping effect is discussed. In general, the negative stiffness element can significantly improve NES performance. Therefore, this study promotes the application of negative stiffness and inerter in engineering.

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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

Cited by 16 publications

References 69 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

Choice of the Model for Vibro-impact Nonlinear Energy Sink

A negative stiffness inertial nonlinear energy sink

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