Nonlinear targeted energy transfer of two coupled cantilever beams coupled to a bistable light attachment

P.-O Mattei 1 R Ponçot 2 M Pachebat 1 Renaud Côte 1
1 Sons
LMA - Laboratoire de Mécanique et d'Acoustique [Marseille] : UPR7051
Abstract : In order to control the sound radiation by a structure, one aims to control vibration of radiating modes of vibration using " Energy Pumping " also named " Targeted Energy Transfer ". This principle is here applied to a simplified model of a double leaf panel. This model is made of two beams coupled by a spring. One of the beams is connected to a nonlinear absorber. This nonlinear absorber is made of a 3D-printed support on which is clamped a buckled thin small beam with a small mass fixed at its center having two equilibrium positions. The experiments showed that, once attached onto a vibrating system to be controlled, under forced excitation of the primary system, the light bistable oscillator allows a reduction of structural vibration up to 10 dB for significant amplitude and frequency range around the first two vibration modes of the system.
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Submitted on : Thursday, May 19, 2016 - 2:35:48 PM
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P.-O Mattei, R Ponçot, M Pachebat, Renaud Côte. Nonlinear targeted energy transfer of two coupled cantilever beams coupled to a bistable light attachment. Journal of Sound and Vibration, Elsevier, 2016, ⟨10.1016/j.jsv.2016.03.008⟩. ⟨hal-01318317⟩

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