Nonlinear targeted energy transfer of two coupled cantilever beams coupled to a bistable light attachment. (7th July 2016)

• Record Type: Journal Article
• Authors: Mattei, P.-O.; Ponçot, R.; Pachebat, M.; Côte, R.
• Is Part Of: Journal of sound and vibration. Volume 373(2016)
• Page Start: 29
• Page End: 51
• Publication Date: 2016-07-07
• Subjects: Sound -- Periodicals; Vibration -- Periodicals; Son -- Périodiques; Vibration -- Périodiques; Sound; Vibration; Periodicals; Electronic journals; 620.205
• DOI: 10.1016/j.jsv.2016.03.008
• Languages: English
• ISSNs: 0022-460X

Abstract

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 centre 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.