Experimental evidence of Willis coupling in a one-dimensional effective material element
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DOI: 10.1038/ncomms15625
Abstract: The primary objective of acoustic metamaterial research is to design subwavelength systems that behave as effective materials with novel acoustical properties. One such property couples the stress–strain and the momentum–velocity relations. This response is analogous… read more here.
Keywords: one dimensional; experimental evidence; material; willis coupling ... See more keywords
Maximum Willis Coupling in Acoustic Scatterers.
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DOI: 10.1103/physrevlett.120.254301
Abstract: Willis coupling in acoustic materials defines the cross-coupling between strain and velocity, analogous to bianisotropic phenomena in electromagnetics. While these phenomena have been garnering significant attention in recent years, to date their effects have been… read more here.
Keywords: acoustic scatterers; coupling acoustic; willis coupling; maximum willis ... See more keywords
Acoustic wave phenomena in Willis metamaterials
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DOI: 10.1121/1.4987860
Abstract: The design of acoustic metamaterials requires accurate modeling of the dynamics present at all relevant time and length scales. Recent work has shown that the effective dynamic properties of inhomogeneous elastic materials can result in… read more here.
Keywords: motion; signal wave; constitutive relations; wave ... See more keywords