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Mathematical Modelling of Waves in Multi-Scale Structured Media de Alexander B. Movchan

Mathematical Modelling of Waves in Multi-Scale Structured Media: Chapman & Hall/CRC Monographs and Research Notes in Mathematics

Autor Alexander B. Movchan, Natasha V. Movchan, Ian S. Jones, Daniel J. Colquitt
en Limba Engleză Hardback – 8 noi 2017
Mathematical Modelling of Waves in Multi-Scale Structured Media presents novel analytical and numerical models of waves in structured elastic media, with emphasis on the asymptotic analysis of phenomena such as dynamic anisotropy, localisation, filtering and polarisation as well as on the modelling of photonic, phononic, and platonic crystals.
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Specificații

ISBN-13: 9781498782098
ISBN-10: 1498782094
Pagini: 258
Ilustrații: 6 Tables, black and white; 40 Illustrations, black and white
Dimensiuni: 156 x 234 x 20 mm
Greutate: 0.5 kg
Ediția:1
Editura: CRC Press
Colecția Chapman and Hall/CRC
Seria Chapman & Hall/CRC Monographs and Research Notes in Mathematics

Cuprins

Introduction and literature survey. Foundations, methods of analysis of waves and analytical approaches to modelling of multi-scale solids. Linear differential operators and distributions. Waves in 1D, 2D and 3D media. Fundamental solutions. Integral transforms and their applications in modelling of waves. Dispersion. Periodic systems, Floquet-Bloch waves. Lattice dynamics. Asymptotic analysis and singular perturbations. Waves in structured media with thin ligaments and disintegrating junctions. Multi-resonator systems. Singular perturbation analysis of fields in solids with disintegrating junctions. Floquet-Bloch waves in periodic multi-resonator systems. Standing waves. Asymptotic estimates for their frequencies. Tuneable multi-resonator systems. Transmission of waves by structured interfaces containing multi-scale resonators. Negative refraction and localisation of waves in structured solids with thin ligaments. Dynamic response of elastic lattices and discretised elastic membranes. Lattice Green’s functions in dynamics. Dynamic anisotropy and localisation near defects. Stop-band Green’s functions and strong exponential localisation. Localisation near cracks/inclusions in a lattice. Cloaking and channelling of elastic waves in structured solids. A cloak is not a shield. Cloaking as a channelling method for incident waves. Boundary conditions on the interior contour of a cloak. Cloaking in elastic plates. Singular perturbation analysis of an approximate cloak. Example of an "impossible cloaking" problem. Structured interfaces in dynamics of elastic solids. Structured interfaces as filters and polarisers. Vortex-type resonators and chiral polarisers of elastic waves. Coated inclusions in dynamics, scattering and neutrality. Lattice approximations of filters and polarisers. Electronic Appendix: Illustrative animations

Notă biografică

Alexander Movchan is a Professor at the University of Liverpool, Natasha Movchan is a Professor at the University of Liverpool, Ian Jones is a Professor at Liverpool John Moores University and an Honorary Fellow at the University of Liverpool, and Daniel Colquitt is a Lecturer at the University of Liverpool. The authors have worked on wave propagation in multi-scale elastic media over many years and have developed novel modelling approaches, which have opened efficient ways to design and study the dynamic response of multi-scale structures known as elastic metamaterials introduced within the last decade.

Recenzii

"This book is aimed at specialists in applied mathematics, physics and engineering. The material is based upon the authors’ research into waves in structured media, dealing with the dynamic response of elastic structures, cracks and interfaces. The mathematical techniques mostly used are Green’s function, asymptotic approximations and numerical simulations. Chapter 1 contains a brief introduction to some ideas and notions and a description of the material in the book. In Chapter 2, dispersion is discussed using linear water waves; also, Bloch-Floquet waves, standing waves and asymptotic lattice approximations are introduced. The elastic problems involving flexural waves on an elastic foundation and waves in chains of particles are discussed. Chapter 3 deals with waves in structured media and ligaments. The asymptotic problems arising from thin interfaces and disintegrating are also dealt with. In Chapter 4, dispersion in periodic structures, dynamic localization and defects in lattices are discussed. Chapter 5 deals with cloaking of waves in which the scattered wave is suppressed by an encompassing structure. In Chapter 6, the models of structured interfaces and chiral media are introduced. Although prerequisite notions are briefly discussed in Chapter 2, some knowledge of asymptotic and singular perturbations and waves in continuous media would be desirable."
-Fiazud Din Zaman (Lahore) - Zentralblatt MATH 1397 — 1

Descriere

Mathematical Modelling of Waves in Multi-Scale Structured Media presents novel analytical and numerical models of waves in structured elastic media, with emphasis on the asymptotic analysis of phenomena such as dynamic anisotropy, localisation, filtering and polarisation as well as on the modelling of photonic, phononic, and platonic crystals.