Experimental investigation and analytical description of a vibro-impact NES coupled to a single-degree-of-freedom linear oscillator harmonically forced

Pennisi, Giuseppe; Stéphan, Cyrille; Gourc, Etienne; Michon, Guilhem

doi:10.1007/s11071-017-3344-1

Cited by 41 publications

(21 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The VI-ABH has been introduced and studied in [22]. It relies on a different nonlinear mechanism than that used in the nonlinear vibration absorber, even though some common points with recently studied vibro-impact NES can be traced [38,39,44]. However the VI-ABH does not consider and added oscillator representing a vibration absorber but only external contact points on which the beam will impact.…”

Section: Comparison Of Nonlinear Absorbers and Vi-abhmentioning

confidence: 99%

Combining nonlinear vibration absorbers and the Acoustic Black Hole for passive broadband flexural vibration mitigation

Touzé

Pelat

et al. 2021

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

The Acoustic Black Hole (ABH) effect refers to a special vibration damping technique adapted to thin-walled structures such as beams or plates. It usually consists of a local decrease of the structure thickness profile, associated to a thin viscoelastic coating placed in the area of minimum thickness. It has been shown that such structural design acts as an efficient vibration damper in the high frequency range, but not at low frequencies. This paper investigates how different types of vibration absorbers, linear and nonlinear, added to the primary system can improve the low frequency performance of a beam ABH termination. In particular, the conjugated effects of the Acoustic Black Hole effect and a Tuned Mass Damper (TMD), a Nonlinear Energy Sink (NES), a bi-stable NES (BNES), and a vibro-impact ABH (VI-ABH) are investigated. Forced response to random excitation are computed in the time domain using a modal approach combined with an energy conserving numerical scheme. Frequency indicators are defined to characterize and compare the performance of all solutions. The simulation results clearly show that all the proposed methods are able to damp efficiently the flexural vibrations in a broadband manner. The optimal tuning of each proposed solution is then investigated through a thorough parametric study, showing how to optimize the efficiency of each solution. In particular, TMD and VI-ABH show a slight dependence on vibration amplitude, while the performance of NES and BNES have a peak of efficiency for moderate amplitudes.

show abstract

Section: Comparison Of Nonlinear Absorbers and Vi-abhmentioning

confidence: 99%

Combining nonlinear vibration absorbers and the Acoustic Black Hole for passive broadband flexural vibration mitigation

Touzé

Pelat

et al. 2021

International Journal of Non-Linear Mechanics

View full text Add to dashboard Cite

show abstract

“…In order to realize the needed essential nonlinearity (i.e. without linear term), the idea of using vibro-impacts has been used theoretically and experimentally [27][28][29][30][31]. However, using contact nonlinearity as a mean to transfer energy and damp vibrations of structures with an added acoustic black hole effect, has never been reported, to the authors' knowledge.…”

Section: Introductionmentioning

confidence: 99%

A vibro-impact acoustic black hole for passive damping of flexural beam vibrations

Touzé

Pelat

et al. 2019

Journal of Sound and Vibration

View full text Add to dashboard Cite

Nonlinear flexural vibrations of slender beams holding both an Acoustic Black Hole termination and a contact non-linearity are numerically studied. The Acoustic Black Hole (ABH) effect is a passive vibration mitigation technique, which has shown attractive properties above a given cut-on frequency. In this contribution, a vibro-impact acoustic black hole (VI-ABH) is introduced, the contact nonlinearity being used as a mean to transfer energy from low to high frequencies. A numerical model of a VI-ABH is derived from an Euler-Bernoulli beam. The contact law is handled with a penalization approach, the visco-elastic layer with a Ross-Kerwin-Ungard model and the problem is solved with a modal approach combined with an energy-conserving time integration scheme. Numerical results show that the VI-ABH brings about important modifications, and changes the nature of more traditional black holes, by redistributing all the vibrational energy. It can lead to a strong decrease of the resonance magnitude at low frequencies. Under steady state noise excitation, parametric studies are realised in the cases of a single contact, a grid of contacts and bilateral contacts layouts, in order to find some optimal designs. Transient dynamics is also studied through the analysis of displacement signal envelope and energy decay time. All the numerical results constantly show that the combination the ABH effect and an energy transfer provided by contact nonlinearity leads to very attractive mitigation template including low frequencies.

show abstract

“…Later, a series of research about the VI nonlinear energy sink (NES) is carried out from an experimental viewpoint [9][10][11][12][13][14][15]. Although these experiments are carried out for different objectives, they have some common characteristics and therefore they are analyzed as a whole.…”

Section: Introductionmentioning

confidence: 99%

Experiment-Based Motion Reconstruction and Restitution Coefficient Estimation of a Vibro-Impact System

Seguy

Lamarque

et al. 2018

Journal of Vibration and Acoustics

View full text Add to dashboard Cite

The objective of this paper is to demonstrate the motion reconstruction and the parameter estimation of a vibro-impact (VI) system from limited experimental information. Based on the measured displacement and acceleration of its linear main system, the rest motion information such as the displacement and velocity of the attached VI energy sink can be calculated rather than difficult direct measurement, and therefore, different response regimes from the strongly modulated response to the classic regime with two impacts per cycle are reconstructed. Consequently, it provides comprehensive experimental data for the validation of analytical and numerical results and for any experimental bifurcation analysis. Moreover, a procedure to estimate the restitution coefficient from periodic impacts is demonstrated. This new experimental approach to estimate the value of the restitution coefficient is simple and this accurate value could play an important role in analytical and numerical study.

show abstract

Experimental investigation and analytical description of a vibro-impact NES coupled to a single-degree-of-freedom linear oscillator harmonically forced

Cited by 41 publications

References 27 publications

Combining nonlinear vibration absorbers and the Acoustic Black Hole for passive broadband flexural vibration mitigation

Combining nonlinear vibration absorbers and the Acoustic Black Hole for passive broadband flexural vibration mitigation

A vibro-impact acoustic black hole for passive damping of flexural beam vibrations

Experiment-Based Motion Reconstruction and Restitution Coefficient Estimation of a Vibro-Impact System

Contact Info

Product

Resources

About