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2014 | Buch

Dynamics and Vibrations

Progress in Nonlinear Analysis

verfasst von: Seyed Habibollah Hashemi Kachapi, Davood Domairry Ganji

Verlag: Springer Netherlands

Buchreihe : Solid Mechanics and Its Applications

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Über dieses Buch

Dynamical and vibratory systems are basically an application of mathematics and applied sciences to the solution of real world problems. Before being able to solve real world problems, it is necessary to carefully study dynamical and vibratory systems and solve all available problems in case of linear and nonlinear equations using analytical and numerical methods. It is of great importance to study nonlinearity in dynamics and vibration; because almost all applied processes act nonlinearly, and on the other hand, nonlinear analysis of complex systems is one of the most important and complicated tasks, especially in engineering and applied sciences problems.

There are probably a handful of books on nonlinear dynamics and vibrations analysis. Some of these books are written at a fundamental level that may not meet ambitious engineering program requirements. Others are specialized in certain fields of oscillatory systems, including modeling and simulations. In this book, we attempt to strike a balance between theory and practice, fundamentals and advanced subjects, and generality and specialization.

None of the books in this area have completely studied and analyzed nonlinear equation in dynamical and vibratory systems using the latest analytical and numerical methods, so that the user can solve the problems without the need of studying too many different references. Thereby in this book, by the use of the latest analytic, numeric laboratorial methods and using more than 300 references like books, papers and the researches done by the authors and by considering almost all possible processes and situation, new theories has been proposed to encounter applied problems in engineering and applied sciences. In this way, the user (bachelor’s, master’s and PhD students, university teachers and even in research centers in different fields of mechanical, civil, aerospace, electrical, chemical, applied mathematics, physics, and etc.) can encounter such systems confidently. In the different chapters of the book, not only are the linear and especially nonlinear problems with oscillatory form broadly discussed, but also applied examples are practically solved by the proposed methodology.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Introduction to Nonlinear Vibrations and Dynamics
Abstract
The world around us, and indeed we ourselves, are inherently subject to various nonlinearities. The simplest experiment illustrating this statement is an attempt to bend a wooden beam. As long as the load is small, the deflection of the beam is approximately proportional to the applied force. But at some sufficiently large level of this force, the beam will simply break.
Sayyid Habibollah Hashemi Kachapi, Davood Domairry Ganji
Chapter 2. Perturbation and Variational Methods
Abstract
In this chapter and Chap. 3, we will use mathematical methods (analytical and numerical methods) for solving strongly nonlinear systems in field dynamics and vibration. More of these methods are mathematics methods that have been introduced by Chinese scientists, especially Professor Ji-Huan He.
Sayyid Habibollah Hashemi Kachapi, Davood Domairry Ganji
Chapter 3. Considerable Analytical Methods
Abstract
The harmonic balance method (HBM) is a technique used in systems including both linear and nonlinear parts. The fundamental idea of HBM is to decompose the system into two separate subsystems, a linear part and a nonlinear part. The linear part is treated in the frequency domain, and the nonlinear part in the time domain. The interface between the subsystems consists of the Fourier transform pair. Harmonic balance is said to be reached when a chosen number of harmonics N satisfy some predefined convergence criteria. First, an appropriate unknown is chosen to use in the convergence check, which is performed in the frequency domain. Then the equations are rewritten in a suitable form for a convergence loop. One starts with an initial value of the chosen unknown, applies the different linear and nonlinear equations, and finally reaches a new value of the chosen unknown. If the difference between the initial value and the final value of the first N harmonics satisfies the predefined convergence criteria, harmonic balance is reached. Otherwise, an increment of the initial value is calculated by using a generalized Euler method—namely, the Newton–Raphson method.
Sayyid Habibollah Hashemi Kachapi, Davood Domairry Ganji
Chapter 4. Introduction of Considerable Oscillatory Systems
Abstract
In this chapter, we introduce some considerable oscillatory systems, including Duffing’s oscillation systems, Van der Pol oscillator systems, Mathieu’s Equation and Ince’s Equation, with their applications, that are the most important ones for analysis of dynamical and vibratory systems.
Sayyid Habibollah Hashemi Kachapi, Davood Domairry Ganji
Chapter 5. Applied Problems in Dynamical Systems
Abstract
In this chapter, we consider several important applied problems in the field of dynamics, vibrations, and oscillations that were analyzed by methods mentioned in previous chapters and solved by nonlinear dynamical teams from Babol Noshirvani University of Technology.
Sayyid Habibollah Hashemi Kachapi, Davood Domairry Ganji
Metadaten
Titel
Dynamics and Vibrations
verfasst von
Seyed Habibollah Hashemi Kachapi
Davood Domairry Ganji
Copyright-Jahr
2014
Verlag
Springer Netherlands
Electronic ISBN
978-94-007-6775-1
Print ISBN
978-94-007-6774-4
DOI
https://doi.org/10.1007/978-94-007-6775-1

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