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　　分類: 图书,进口原版书,科学与技术 Science & Techology ,

作者： Alexey V.Porubov 著

出 版 社： Penguin

出版时间： 2003-12-1字数：版次： 1页数： 213印刷时间： 2003/07/01开本：印次：纸张： 胶版纸I S B N ： 9789812383266包装： 精装内容简介

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.

目录

Preface

1.Basic concepts

1.1Single nonlinear waves of permanent shape

1.1.1 Monotonic bell-shaped solitary waves

1.1.2 Oscillatory bell-shaped solitary waves

1.1.3 Kink-shaped waves

1.1.4 Periodic nonlinear waves

1.2 Formation of nonlinear waves of permanent shape from anarbitrary input

1.2.1 Bell-shaped solitary wave formation from an initiallocalized pulse

1.2.2 Kink-shaped and periodic waves formation

1.3 Amplification, attenuation and selection of nonlinear waves

2.Mathematical tools for the governing equations analysis

2.1 Exact solutions

2.1.1 Direct methods and elliptic functions

2.1.2 Painleve analysis

2.1.3 Single travelling wave solutions

2.1.4 Exact solutions of more complicated form .

2.2 Asymptotic solutions

2.3 Numerical methods

2.3.1 Nonlinear evolution equations

2.3.2 Nonlinear hyperbolic equations

2.4 Use of Mathematica

3.Strain solitary waves in an elastic rod

3.1 The sources of nonlinearities

3.2 Modelling of nonlinear strain waves in a free lateral surfaceelastic rod

3.2.1 Statement of the problem

3.2.2 Derivation of the governing equation

3.3 Double-dispersive equation and its solitary wave solution

3.4 Observation of longitudinal strain solitary waves

3.5 Reflection of solitary wave from the edge of the rod

4.Amplification of strain waves in absence of external en-ergy influx

4.1 Longitudinal strain solitary wave amplification in a narrow- ing elastic rod

4.1.1 Governing equation for longitudinal strain waves propagation

4.1.2 Evolution of asymmetric strain solitary wave

4.1.3 Experimental observation of the solitary wave amplification

4.2 Strain solitary waves in an elastic rod embedded in anotherelastic external medium with sliding

4.2.1 Formulation of the problem

4.2.2 External stresses on the rod lateral surface

4.2.3 Derivation of strain-displacement relationships insidethe rod

4.2.4 Nonlinear evolution equation for longitudinal strain waves along the rod and its solution

4.2.5 Influence of the external medium on the propagation of the strain solitary wave along the rod

4.2.6 Numerical simulation of unsteady strain wave propagation

4.3 Strain solitary waves in an elastic rod with microstructure ~

4.3.1 Modelling of non-dissipative elastic medium withmicrostructure

4.3.2 Nonlinear waves in a rod with pseudo-continuum Cosserat microstructure

4.3.3 Nonlinear waves in a rod with Le Roux continuum microstructure

4.3.4 Concluding remarks

5.Influence of dissipative (active)external medium

6.Bulk active or dissipative sources of the amplification and selection

Bibliography

Index

 

 

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