Towards a Novel Acoustic Absorber Using a Magnetically Induced Geometric Nonlinearity in an Elastic Membrane

Conference item


Shearer, DJ, Dance, S, Gomez-Agustina, L and Randell, J (2018). Towards a Novel Acoustic Absorber Using a Magnetically Induced Geometric Nonlinearity in an Elastic Membrane. Euronoise 2018, the 11th European Congress and Exposition on Noise Control Engineering. Crete, Greece 27 - 31 May 2018 London South Bank University.
AuthorsShearer, DJ, Dance, S, Gomez-Agustina, L and Randell, J
Abstract

Research on Energy Pumping based on the idea of nonlinear energy sinks exploiting Targeted Energy Transfer (TET) between a linear system and a nonlinear attachment has been successfully applied in vibration control. . The same approach promise the development of a novel passive, broadband dissipative mechanism with many potential acoustic applications such as in spaces for music practice and reproduction. This paper introduces and outlines ongoing research into the potential usability of the TET as a sound absorption mechanism using elastic membranes Initial experimental investigations have shown potential as a sound absorber that has a narrow dynamic range Results on early experimental work will be presented on the geometric nonlinearity imposed upon an elastic membrane by means of an electromagnet

KeywordsAbsorber
Year2018
PublisherLondon South Bank University
Accepted author manuscript
License
CC BY 4.0
Publication dates
Print27 May 2018
Publication process dates
Deposited15 May 2018
Accepted02 Apr 2018
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https://openresearch.lsbu.ac.uk/item/86qw7

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