Using delayed damping to minimize transmitted vibrations |
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Authors: | Lahcen MokniMohamed Belhaq |
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Institution: | Laboratory of Mechanics, University Hassan II-Casablanca, Morocco |
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Abstract: | In Mokni et al. Mokni L, Belhaq M, Lakrad F. Effect of fast parametric viscous damping excitation on vibration isolation in sdof systems. Commun Nonlinear Sci Numer Simulat 2011;16:1720-1724], it was shown that in a single degree of freedom system a fast nonlinear parametric damping enhances vibration isolation with respect to the case where the nonlinear damping is time-independent. The present work proposes additional enhancement of vibration isolation using delayed nonlinear damping. Attention is focused on assessing the contribution of a delayed nonlinear damping over a fast parametric damping in terms of minimizing transmissibility. The results show that a nonlinear damping with delay greatly improves vibration isolation. |
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Keywords: | Parametric damping Delayed damping Vibration isolation Fast excitation Perturbation analysis |
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