A mode matching approach for modeling two dimensional porous grating with infinitely rigid or soft inclusions

The Journal of the Acoustical Society of America
Benoit NennigYves Aurégan

Abstract

This work investigates the acoustical properties of a multilayer porous material in which periodic inclusions are embedded. The material is assumed to be backed by a rigid wall. Most of the studies performed in this field used the multipole method and are limited to circular shape inclusions. Here, a mode matching approach, more convenient for a layered system, is adopted. The inclusions can be in the form of rigid scatterers of an arbitrary shape, in the form of an air-filled cavity or in the form of a porous medium with contrasting properties. The computational approach is validated on simple geometries against other numerical schemes and with experimental results obtained in an anechoic room on a rigid grating embedded in a porous material made of 2 mm glass beads. The method is used to study the acoustic absorption behavior of this class of materials in the low frequency range and at a range of angles of incidence.

References

Jul 26, 2003·The Journal of the Acoustical Society of America·Xavier Olny, Claude Boutin
Apr 29, 2006·The Journal of the Acoustical Society of America·Jane B Lawrie, Ray Kirby
Apr 10, 2008·The Journal of the Acoustical Society of America·Joong Seok LeeYeon June Kang
Jul 31, 2009·The Journal of the Acoustical Society of America·J-P GrobyY S Xu
Feb 9, 2010·The Journal of the Acoustical Society of America·Olivier Dazel, Vincent Tournat
Aug 17, 2010·The Journal of the Acoustical Society of America·Dorel Homentcovschi, Ronald N Miles
Dec 2, 2010·The Journal of the Acoustical Society of America·J-P GrobyT E Vigran
Jan 12, 2011·The Journal of the Acoustical Society of America·Benoit NennigMabrouk Ben Tahar
Apr 12, 2011·The Journal of the Acoustical Society of America·J-F AllardW Lauriks
May 17, 2011·The Journal of the Acoustical Society of America·J-P GrobyW Lauriks
Jan 10, 2012·The Journal of the Acoustical Society of America·J-P GrobyL Kelders

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Citations

Dec 1, 2013·The Journal of the Acoustical Society of America·C LagarrigueO Umnova
Feb 1, 2013·The Journal of the Acoustical Society of America·J-P GrobyL Kelders
Sep 6, 2014·The Journal of the Acoustical Society of America·J-P GrobyB Nennig
Jun 22, 2015·The Journal of the Acoustical Society of America·Dorel Homentcovschi, Ronald N Miles
Jan 27, 2015·The Journal of the Acoustical Society of America·J-P GrobyB Nennig
Dec 3, 2015·The Journal of the Acoustical Society of America·Yanni ZhangJie Pan
Feb 6, 2017·The Journal of the Acoustical Society of America·Stéphane GriffithsStéphane Job
Dec 5, 2016·The Journal of the Acoustical Society of America·Xiwen Dai, Yves Aurégan
Aug 5, 2018·The Journal of the Acoustical Society of America·Dorel Homentcovschi, Romeo Bercia
Nov 3, 2017·The Journal of the Acoustical Society of America·Lei XiongWenping Bi

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