Browsing INIT_Articles by Author "1e72571d-5cd6-4986-940c-a5391d173118"

Now showing items 1-3 of 3

    • openAccess   Analytical modeling of one-dimensional resonant asymmetric and reciprocal acoustic structures as Willis materials 

      Groby, Jean-Philippe; Malléjac, Matthieu; Merkel, Aurélien; Romero-García, Vicent; TOURNAT, Vincent; Torrent, Daniel; Li, Jensen IOP Publishing (2021-05-14)
      As building blocks of acoustic metamaterials, resonant scatterers have demonstrated their ability to modulate the effective fluid parameters, which subsequently possess extreme properties such as negative bulk modulus or ...

    • closedAccess   Non-locality of the Willis coupling in fluid laminates 

      Malléjac, Matthieu; Cavalieri, Théo; Romero-García, Vicent; Merkel, Aurélien; Torrent, Daniel; Christensen, Johan; Li, Jensen; Groby, Jean-Philippe Elsevier B.V. (2022-02-04)
      The closed form expressions of the effective properties in periodic fluid laminates are derived thanks to the Padé approximation of the transfer matrix. A second-order Taylor expansion of the transfer matrix elements ...

    • openAccess   Nonreciprocal and even Willis couplings in periodic thermoacoustic amplifiers 

      Olivier, Côme; Poignand, Gaëlle; Malléjac, Matthieu; Romero-García, Vicent; PENELET, guillaume; Merkel, Aurélien; Torrent, Daniel; Li, Jensen; Christensen, Johan; Groby, Jean-Philippe American Physical Society (2021-11-10)
      hermoacoustic amplifiers are analyzed in the framework of nonreciprocal Willis coupling. The closed form expressions of the effective properties are derived, showing that an applied temperature gradient causes the appearance ...