Waves in elastic bodies with discrete and continuous dynamic microstructure

Gennady S. Mishuris, Alexander B. Movchan, Leonid I. Slepyan

Research output: Contribution to journalArticlepeer-review

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)’.

Original languageEnglish
Article number20190313
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume378
Issue number2162
DOIs
StatePublished - 10 Jan 2020

Keywords

  • Dispersion relations
  • Dynamic microstructure
  • Green’s functions
  • Integral transforms
  • Wave equations

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