Waves in elastic bodies with discrete and continuous dynamic microstructure

Author:

Mishuris Gennady S.1ORCID,Movchan Alexander B.2ORCID,Slepyan Leonid I.3ORCID

Affiliation:

1. Department of Mathematics, IMPACS, Aberystwyth University, Aberystwyth SY23 3BZ, UK

2. Department of Mathematical Sciences, University of Liverpool, Liverpool L69 7ZL, UK

3. School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, PO Box 39040, Ramat Aviv, 69978 Tel Aviv, Israel

Abstract

This paper presents a unified approach to the modelling of elastic solids with embedded dynamic microstructures. General dependences are derived based on Green's kernel formulations. Specifically, we consider systems consisting of a master structure and continuously or discretely distributed oscillators. Several classes of connections between oscillators are studied. We examine how the microstructure affects the dispersion relations and determine the energy distribution between the master structure and microstructures, including the vibration shield phenomenon. Special attention is given to the comparative analysis of discrete and continuous distributions of the oscillators, and to the effects of non-locality and trapped vibrations. This article is part of the theme issue ‘Modelling of dynamic phenomena and localization in structured media (part 2)’.

Funder

EPSRC Program

ERC Advanced

British Council UK–Israel Science Lectureships Programme

Israel Science Foundation

EPSRC

Publisher

The Royal Society

Subject

General Physics and Astronomy,General Engineering,General Mathematics

Reference47 articles.

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2. Todhunter I. 1960 A history of the theory of elasticity the strength of materials from Galilei to Lord Kelvin. In Galilei to Saint-Venant 1639–1850 vol. I (ed. K Pearson) pp. 496–505. New York NY: Dover (orig. publ. in 1886).

3. Kunin IA. 1982 Elastic media with microstructure I: One-dimensional models (eds M Cardona P Fulde H-J Queisser E Kröner). Springer Series in Solid State Sciences No. 26. Berlin Germany: Springer (Nauka 1975 in Russian).

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