Web5 dec. 2024 · Willis fluids, or more generally Willis materials, are homogenized composites that exhibit coupling between momentum and strain. This coupling is intrinsic to inhomogeneous media and can play a… 75 PDF Ultrasonic metamaterials with negative modulus N. Fang, D. Xi, +4 authors Xiang Zhang Materials Science, Physics Nature … Web1 okt. 2016 · Materials that require coupling between the stress–strain and momentum–velocity constitutive relations were first proposed by Willis (Willis 1981 Wave Motion3, 1–11. ( doi:10.1016/0165-2125 (81)90008-1 )) and are now known as elastic materials of the Willis type, or simply Willis materials.
Coupled Decorated Membrane Resonators with Large Willis Coupling
Web13 jun. 2024 · Metamaterials enable the realization of unique material properties such as coupling between strain and momentum in a fluid—known as Willis coupling. Here, … french artist known for pastels edgar
[1812.02318] Acoustic meta-atom with maximum Willis coupling
Web25 jul. 2024 · Here, by extending the recently developed concept of virtualized metamaterials, we propose acoustic Willis metamaterials that break the passivity and reciprocity limit while also achieving... Web2 jun. 2024 · Acoustic bianisotropy, also called Willis coupling, considers the coupling between acoustic pressure and velocity, resulting in momentum and volume change as functions of both acoustic pressure and velocity. 39 39. J. R. Willis, “ Variational principles for dynamic problems for inhomogeneous elastic media,” Wave Motion 3, 1 (1981). Web17 jul. 2024 · Acoustic metamaterials are structures with exotic acoustic properties, with promising applications in acoustic beam steering, focusing, impedance matching, absorption and isolatio fastest f150 truck