Estimation of energy pumping time in bistable NES and experimental validation
| Autor: | Wu, Zhenhang, Seguy, Sébastien, Paredes, Manuel |
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| Přispěvatelé: | Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Vibration and Acoustics Journal of Vibration and Acoustics, 2022, 144 (5), pp.051004. ⟨10.1115/1.4054253⟩ |
| ISSN: | 1048-9002 1528-8927 |
| DOI: | 10.1115/1.4054253⟩ |
| Popis: | International audience; The bistable Nonlinear Energy Sink (NES) shows high efficiency in mitigating vibration through Targeted Energy Transfer (TET). It performs well in low and high energy input cases, whereas, for a cubic NES, TET occurs only above a certain energy threshold. In this work, the measure of energy pumping time is extended to a harmonic excitation case by the application of a particular integration assumption. An equivalent point in the Slow Invariant Manifold (SIM) structure can represent the average variation of the amplitudes of LO and NES. The marked robustness of this semi-analytical prediction method under parameter perturbation is investigated numerically here. The influence of parameters on the rate at which the amplitude declines is also investigated for both impulsive and harmonic excitation. The pumping time estimation is validated in a low energy input experimental test. |
| Databáze: | OpenAIRE |
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