This book treats two problems simultaneously: sequential analytical consideration of nonlinear strain wave amplification and selection in wave guides and in a medium; demonstration of the use of even particular analytical solutions to nonintegrable equations in a design of numerical simulation of unsteady nonlinear wave processes. The text includes numerous detailed examples of the strain wave amplification and selection caused by the influence of an external medium, microstructure, moving point defects, and thermal phenomena. The main features of the book are: (1) nonlinear models of the strain wave evolution in a rod subjected by various dissipative/active factors; (2) an analytico-numerical approach for solutions to the governing nonlinear partial differential equations with dispersion and dissipation.
This book is essential for introducing readers in mechanics, mechanical engineering, and applied mathematics to the concept of long nonlinear strain wave in one-dimensional wave guides. It is also suitable for self-study by professionals in all areas of nonlinear physics.
Contents:
- Basic Concepts
- Mathematical Tools for the Governing Equations Analysis
- Strain Solitary Waves in an Elastic Rod
- Amplification of Strain Waves in Absence of External Energy Influx
- Influence of Dissipative (Active) External Medium
- Bulk Active or Dissipative Sources of the Amplification and Selection
Readership: Graduate students, academics and researchers in mechanics, nonlinear science and mechanical engineering.
“In a very few pages the author takes us to the land of true nonlinear localized strain waves, not abstract mathematical entities, as such waves can materialize in elastic rods and elastic media endowed with a microstructure. Particularly new is the appropriate treatment of the case of dissipative and active media and the possible occurrence of wave amplification and selection, a phenomenon that should be of great interest in seismology. Although mathematically sound, the approach is pedestrian and well illustrated by many numerical simulations. The book is highly recommended to all those, physicists, mathematicians and mechanicians alike, who sooner or later will meet such phenomena.”
G A Maugin
Université Pierre et Marie Curie, Paris
“The text is a useful sourcebook for PDEs for which explicit solutions have recently been found and demonstrates clearly how modulational descriptions give reliable predictions for complex phenomena in solids. It is recommended to practitioners in nonlinear physics concerned with propagation of pulses and kinks in non-integrable systems.”
Professor David Parker
School of Mathematics, University of Edinburgh