Phys. Rev. E 99, 063006 (2019) - Sound scattering by a lattice of resonant inclusions in a soft medium

Sound scattering by a lattice of resonant inclusions in a soft medium

Alex Skvortsov, Ian MacGillivray, Gyani Shankar Sharma, and Nicole Kessissoglou

Phys. Rev. E 99, 063006 – Published 28 June 2019

Abstract

We present a generalized analytical model to investigate acoustic scattering by a lattice of voids of arbitrary shape in a viscoelastic matrix. To this end, we represent the lattice of voids using effective boundary conditions that incorporate multiple scattering effects. Applying analogies between acoustics and electrostatics, the model is derived for voids of nonspherical shape and different lattice arrangements. Our analytical results are compared with those from numerical simulations as well as experimental results from the literature.

Received 11 April 2019

DOI:https://doi.org/10.1103/PhysRevE.99.063006

Published by the American Physical Society

Physics Subject Headings (PhySH)

Composite materials Smart materials

Fluid DynamicsCondensed Matter, Materials & Applied PhysicsPolymers & Soft Matter

Authors & Affiliations

Alex Skvortsov ^* and Ian MacGillivray

Defence Science and Technology, 506 Lorimer Street, Fishermans Bend, Victoria 3207, Australia

Gyani Shankar Sharma and Nicole Kessissoglou

School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia

^*alex.skvortsov@dst.defence.gov.au

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Issue

Vol. 99, Iss. 6 — June 2019

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