Workshop | DENORMS

« Modelling of high performance acoustic structures Porous media, metamaterials and sonic crystals »

DENORMS Action’s first Workshop on “Modelling of high performance acoustic structures Porous media, metamaterials and sonic crystals” took place on 24th and 25th January 2017 in Rome, organised by Roma Tre University gathering more than 80 participants.

This Workshop was dedicated to theoretical and numerical modelling of acoustic treatments made of porous materials and periodic structures. The Workshop also had a session on Multiphysics applications including electromagnetics aimed at broadening the scope of theoretical and numerical results available in different areas of Physics and Mathematics. On this occasion, the leading experts in these fields shared their knowledge with other researchers, PhD students, young scientists and engineers from all across Europe.

: The « Workshop Best Paper » was awarded to Ms. Camille Gaulon, PhD candidate at Laboratoire Matière et Systèmes Complexes, Université Paris Diderot, for her presentation on Acoustic properties and dissipation in liquid foams

The Workshop was organised in 4 sessions of half a day each:

New trends in traditional noise treatments – porous materials and microperforated plates
Acoustic metamaterials (i.e. subwavelength absorbers), metasurfaces and sonic crystals for audible sound manipulation
New trends in vibroacoustics (i.e. elastic metamaterials and metasurfaces)
Use of metamaterials in other fields of Physics and metamaterials exposed to multiple physical phenomena

For more information, see the flyer and week agenda.

Organising Committee

Anton Krynkin (Work Group 1 Leader) – a.krynkin@sheffield.ac.uk
Francesco Asdrubali (Local Organiser) – francesco.asdrubali@uniroma3.it
Pauline Rasera (DENORMS Grant Manager) – denorms@univ-lemans.fr
Jean-Philippe Groby (DENORMS Chair) – jean-philippe.groby@univ-lemans.fr
Olga Umnova (DENORMS Vice-Chair) – o.umnova@salford.ac.uk

Scientific Committee

Keith Attenborough (Open University, UK)
Anne-Christine Hladky-Hennion, (CNRS, ISEN-IEMN, France)
Jean-Philippe Groby (CNRS, the Maine University, France)
Kirill Horoshenkov (The University of Sheffield, UK)
Andrew Norris (Rutgers University, USA)
Olga Umnova (The University of Salford, UK
Victor Sanchez-Morcillo (UPV – EPSG, Spain)
Chrysoula Tsogka (Foundation for Research and Technology, Greece)
Livija Cveticanin (University of Novi Sad, Serbia)

Videos of the talks

Session on New trends in traditional noise treatments – porous materials and microperforated plates

Plenary lecture by Keith Attenborough (The Open University): Waves in porous materials

Nicolas Dauchez (Université de Technologie de Compiègne): Sound absorption of a poroelastic cuboid network (abstract – video)
Venegas Rodolfo (ENTPE): Enhancing sound attenuation in multiscale porous materials via diffusion processes (abstract – video)
Fabien Chevillotte (Matelys – Research Lab): From the microstructure to condensed equivalent fluid models (abstract – video)
Hugo Karpinski (University of Salford): Acoustical properties of nanoporous activated carbon felts (abstract – video)
Tomasz Zielinski (Institute of Fundamental Technological Research of the Polish Academy of Sciences): Sound absorption of plates with micro-slits backed with an air cavity: analytical estimations, numerical modelling and measurements (abstract – video)
Mathieu Gaborit (KTH Royal Institute of Technology): Coupling of Bloch waves and Finite-Element models: case of metaporous sandwich structures (abstract – video)

Session on Acoustic metamaterials (i.e. subwavelength absorbers), metasurfaces and sonic crystals for audible sound manipulation

Plenary lecture by Noé Jiménez (Laboratoire d’Acoustique de l’Université du Maine, UMR 6613 CNRS): Subwavelength absorbers and metasurfaces

Joong Seok Lee (Chungnam National University): Broadband sound absorption using multiple slow waves in metaporous layers (abstract – video)
Ashwin Sridhar (Eindhoven University of Technology): A multiscale semi-analytical approach towards plane wave analysis of local resonance metamaterials (abstract – video)
Neha Sharma (University of Salford): A Low Frequency Muffler based on the Acoustic Black Hole Effect (abstract – video)
Milan Cervenka (Czech Technical University in Prague): Acoustic bandpass filters employing shaped resonators (abstract – video)
Bart Van Damme (Empa Switzerland): Theoretical and experimental investigation of bending waves in beams with a periodic structure (abstract – video)
Logan Schwan (Laboratoire d’Acoustique de l’Université du Maine, UMR 6613 CNRS): Theory and experiments on surface acoustic waves at a lossy metasurface: complex dispersion relation and surface slow sound (abstract – video)

Session on New trends in vibroacoustics (i.e. elastic metamaterials and metasurfaces)

Plenary lecture by Richard Craster (Imperial College London): Seismic Metamaterials

Lucas Pomot (Aix Marseille University): Combining transformation physics and homogenization for designs of seismic cloaks (abstract – video)
Aleksey Pichugin (Brunel University London): Asymptotic modelling of the Rayleigh-Bloch waves travelling along a periodically-perturbed elastic surface (abstract – video)
Ioannis Antoniadis (National technical Univeristy of Athens): Towards the design of highly dissipative low-frequency metamaterials: the k-damping concept (abstract – video)
Claude Boutin (ENTPE /CNRS Université de Lyon): On the non-conventional vibro-acoustic behaviour of highly contrasted plates (abstract – video)
Anastasiia Krushynska (University of Turin): Spider web-inspired acoustic metamaterials for sound manipulation (abstract– video)
Lucas Van Belle (KU Leuven): Modelling, analysis and experimental validation of vibro-acoustic locally resonant metamaterials including damping (abstract – video)
Sakdirat Kaewunruen (University of Birmingham): Engineered crumbed rubber concrete for vibroacoustic reduction in railway built environment (abstract – video)

Session on Use of metamaterials in other fields of Physics and metamaterials exposed to multiple physical phenomena

Plenary lecture by Alessandro Toscano (Roma Tre University): Numerical modelling of metamaterials: electromagnetic and acoustic applications

Stefano Vellucci (Roma Tre University): Cloaking and magnet-less non-reciprocity through metamaterials (abstract – video)
Camille Gaulon (University Paris Diderot): Acoustic properties and dissipation in liquid foams ♦Best Paper♦ (abstract – video)
Tao Yang (Technical University Liberec): Relationship between sound absorption property and transmission behavior of Struto nonwoven (abstract – video)
Jiangyi Zhang (Laboratoire d’Acoustique de l’Université du Maine, UMR 6613 CNRS): Nonlinear Membrane-Type Acoustic Metamaterials: Harmonic generation and solitons (abstract – video)
Livija Cveticanin (University of Novi Sad): Negative effective mass in the mass-in-mass subsystem with cubic nonlinearity (abstract – video)