A review of particle damping modeling and testing

Gagnon, Louis; Morandini, Marco; Ghiringhelli, G.L.

doi:10.1016/j.jsv.2019.114865

Cited by 96 publications

(24 citation statements)

References 96 publications

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“…in good agreement with (22). It should be emphasized that the damping must always obey δ min(δ max , δ TMD opt.…”

Section: Connection To Classical Tmd Theorysupporting

confidence: 65%

“…Rather, the criteria reflect the maximal damping that can be achieved. The red curve shows the damping due to an optimal TMD (without amplitude limitations), (22). The black curve shows the maximum damping with a fixed amplitude ratio α, (13).…”

Section: Connection To Classical Tmd Theorymentioning

confidence: 99%

“…However, these work generally focus on tuning aspects and on the mathematics of control theory. Other works present theory on impact dampers / pounding dampers [16,17,18,19,20,21], particle dampers [22,23]. For a more detailed discussion of impact dynamics and stability of periodic solutions, see e.g.…”

Section: Introductionmentioning

confidence: 99%

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Mass Dampers with Limited Amplitude

Tophøj¹,

Grathwol²

2021

Preprint

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Mass dampers are widely used in engineering applications. We consider the effects of limitations on the damper amplitude. Using simple methods to analyze very general mass dampers, we find an upper limit to the damping. The maximum damping logarithmic decrement is δmax = 4μα, where μ is the mass ratio, and α isthe amplitude ratio of damper to structure amplitude. The result is further discussed in relation to Tuned Mass Dampers (TMDs), which can performvery well if there is enough avaliable space. In practice, amplitude limits always apply, and our result can be used to relate these to the damper performance.Our result also applies to active devices, which have to obey the limit mentioned above. Simulated tests of TMDs and other mass dampers are described. The damping is measured both by decay tests and by forced motion test. The methods agree well in the amplitude-limited regime. In other cases, decay tests are difficulet to interpret, indicating that one needs to be very careful whenmeasuring damping of 2DOF systems based solely on decay tests. We hope that our result may inform the selection and design of mass dampers in the future, where one should consider amplitude limits as the very first step.

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“…in good agreement with (22). It should be emphasized that the damping must always obey δ min(δ max , δ TMD opt.…”

Section: Connection To Classical Tmd Theorysupporting

confidence: 65%

Section: Connection To Classical Tmd Theorymentioning

confidence: 99%

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Mass Dampers with Limited Amplitude

Tophøj¹,

Grathwol²

2021

Preprint

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“…The main reasons are probably different areas of application and the values of the chosen coefficients. Nowadays, it is also reported that the magnitude of the coefficients might be of minor importance for the energy dissipation [10].…”

Section: Microscopic Effectsmentioning

confidence: 99%

Toward a design methodology for particle dampers by analyzing their energy dissipation

Meyer

Seifried

2020

Comp. Part. Mech.

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Particle dampers show a huge potential to reduce undesired vibrations in technical applications even under harsh environmental conditions. However, their energy dissipation depends on many effects on the micro- and macroscopic scale, which are not fully understood yet. This paper aims toward the development of design rules for particle dampers by looking at both scales. This shall shorten the design process for future applications. The energy dissipation and loss factor of different configurations are analyzed via the complex power for a large excitation range. Comparisons to discrete element simulations show a good qualitative agreement. These simulations give an insight into the process in the damper. For monodisperse systems, a direct correlation of the loss factor to the motion modes of the rheology behavior is shown. For well-known excitation conditions, simple design rules are derived. First investigations into polydisperse settings are made, showing a potential for a more robust damping behavior.

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“…Sometimes a quasi-solid state of granular matter is controlled with underpressure to obtain a vacuum-packed dissipating structure that can be used for damping of bending vibrations. 17 A comprehensive overview of different approaches to the particle damping was presented by Gagnon et al 18…”

Section: Introductionmentioning

confidence: 99%

An experimental study on granular dissipation for the vibration attenuation of skis

Bajkowski

Dyniewicz

Bajer

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part P:

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Due to the continuous deformations and irregularities of the surface of snow, alpine skis exhibit dynamic excitation, leading to drastic vibrations and decreased manoeuvrability. Therefore, attenuating these unwanted vibrations, while ensuring that the ski experience is not compromised, is an important challenge. The possibility of using granular material in a damping device is studied in this paper. A container that was partially filled with loose granules was fixed at the tip of an alpine ski to suppress vibrations by dissipating energy through collisions. The performance was verified experimentally by studying the transient response of a ski mounted in a horizontal cantilever orientation. Moreover, on-snow tests were performed. Different numbers of plastic granules were used as a dissipating material. To identify the nonlinear damping characteristics of the system, a Hilbert transform was used. In the laboratory test, the displacement amplitude decay was up to 16 percentage points higher when a granular dissipator was attached to the ski than without the damper. During field testing, acceleration amplitudes were 9% lower compared to the ski without the dissipator. This solution could possibly be adapted to other boardsports on a wide variety of terrain, including ground, water and snow.

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A review of particle damping modeling and testing

Cited by 96 publications

References 96 publications

Mass Dampers with Limited Amplitude

Mass Dampers with Limited Amplitude

Toward a design methodology for particle dampers by analyzing their energy dissipation

An experimental study on granular dissipation for the vibration attenuation of skis

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