Download or read book Vibrational Energy Flow in Structures written by J. D. Palmer and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibrational Energy Flow in Harmonically Loaded Structures written by Svante Alfredsson and published by . This book was released on 1993 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibrational Energy Flow Measurement in Structures Using a High Spatial Density Technique written by Anthony R. Fleszar and published by . This book was released on 1995 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Intensity and Vibrational Energy Flow written by and published by . This book was released on 1993 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wave Propagation Approach for Structural Vibration written by Chongjian Wu and published by Springer Nature. This book was released on 2020-10-28 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended for researchers, graduate students and engineers in the fields of structure-borne sound, structural dynamics, and noise and vibration control. Based on vibration differential equations, it presents equations derived from the exponential function in the time domain, providing a unified framework for structural vibration analysis, which makes it more regular and normalized. This wave propagation approach (WPA) divides structures at “discontinuity points,” and the waves show characteristics of propagation, reflection, attenuation, and waveform conversion. In each segment of the system between two “discontinuity points,” the governing equation and constraint are expressed accurately, allowing the dynamic properties of complex systems to be precisely obtained. Starting with basic structures such as beams and plates, the book then discusses theoretical research on complicated and hybrid dynamical systems, and demonstrates that structural vibration can be analyzed from the perspective of elastic waves by applying WPA.
Download or read book The Use of the Structural Intensity Method to Determine the Flow of Vibrational Energy Through Structures written by James P. De Clerck and published by . This book was released on 1991 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Noise and Vibration Control written by Malcolm J. Crocker and published by John Wiley & Sons. This book was released on 2007-10-05 with total page 1594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.
Download or read book Handbook of Acoustics written by Malcolm J. Crocker and published by John Wiley & Sons. This book was released on 1998-03-09 with total page 1494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustical engineers, researchers, architects, and designers need a comprehensive, single-volume reference that provides quick and convenient access to important information, answers and questions on a broad spectrum of topics, and helps solve the toughest problems in acoustical design and engineering. The Handbook of Acoustics meets that need. It offers concise coverage of the science and engineering of acoustics and vibration. In more than 100 clearly written chapters, experts from around the world share their knowledge and expertise in topics ranging from basic aerodynamics and jet noise to acoustical signal processing, and from the interaction of fluid motion and sound to infrasound, ultrasonics, and quantum acoustics. Topics covered include: * General linear acoustics * Nonlinear acoustics and cavitation * Aeroacoustics and atmospheric sound * Mechanical vibrations and shock * Statistical methods in acoustics * Architectural acoustics * Physiological acoustics * Underwater sound * Ultrasonics, quantum acoustics, and physical aspects of sound * Noise: its effects and control * Acoustical signal processing * Psychological acoustics * Speech communication * Music and musical acoustics * Acoustical measurements and instrumentation * Transducers The Handbook of Acoustics belongs on the reference shelf of every engineer, architect, research scientist, or designer with a professional interest in the propagation, control, transmission, and effects of sound.
Download or read book Energy Flow Analysis of Coupled Structures written by Phillip Eung-Ho Cho and published by . This book was released on 1993 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration and Sound Energy Flow in Three dimensional Box like Structures written by Gopal Prasad Mathur and published by . This book was released on 1981 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Two wave Model Study of Vibrational Energy Transfer in Framed Structures written by Michael John Greenwood and published by . This book was released on 1978 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Flow Regulation Through Built up Structures Toward Wave Guiding and Vibration Damping written by Shilong Li and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overarching goal of structural dynamic analysis is usually to facilitate regulation of energy flows in terms of vibration and acoustic wave transmission. Such regulation of vibratory energy flows can yield effective designs of vibration suppression, energy harvesting, and vibration/wave based health monitoring, etc. This dissertation research employs the concept of built-up structure, i.e., constructing secondary oscillatory sub-systems and incorporating them into the underlying host structure to realize new ways of energy flow regulation. In particular, we propose to develop three distinct designs of sub-systems to realize unusual wave transmission and to dramatically improve damping performance, i.e., electro-mechanical local scatter for wave guiding, multi-field adaptive metasurfacing, and cantilevered coupling design to enhance energy dissipation. The first built-up sub-system design is based on the electro-mechanical local coupling, aiming at realizing adaptive elastic metasurfaces capable of arbitrarily manipulating refracted wave energy. By adjusting the negative capacitances properly, accurately formed, discontinuous phase profiles along the elastic metasurfaces can be achieved. Based on different phase profiles, anomalous refractions, planar focal lenses, self-accelerating beams and source illusion can be realized on the transmitted elastic wave energy. The second sub-system, multi-field adaptive metasurfacing, combines the membrane-type acoustic metasurface with piezoelectric integration able to tune the initial stress on the membrane with different voltages such that different resonant frequencies of the membranes can be realized to accomplish proper phase profiles along metasurfaces. Applications, such as acoustic cloaking, are illustrated to feature the acoustic wave energy manipulation. To dissipate the vibrational energy, tuned mass particle damper is designed based on cantilevered coupling, where the particle damping mechanism is integrated into a tuned mass damper configuration. The essential idea is to utilize the tuned mass damper configuration as a motion magnifier to amplify the energy dissipation capability of particle damper. While these built-up sub-system designs are distinctly different, they share the common feature that, by properly adjusting the sub-system oscillatory effects, the impedance at the region of interest of the host structure can be altered as desired. Consequently, effective energy flow regulations are realized. The outcome of this research can directly benefit vibration control and structural health monitoring.
Download or read book Sound and Structural Vibration written by Frank J. Fahy and published by Elsevier. This book was released on 2007-01-12 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of Sound and Structural Vibration was written in the early 1980s. Since then, two major developments have taken place in the field of vibroacoustics. Powerful computational methods and procedures for the numerical analysis of structural vibration, acoustical fields and acoustical interactions between fluids and structures have been developed and these are now universally employed by researchers, consultants and industrial organisations. Advances in signal processing systems and algorithms, in transducers, and in structural materials and forms of construction, have facilitated the development of practical means of applying active and adaptive control systems to structures for the purposes of reducing or modifying structural vibration and the associated sound radiation and transmission. In this greatly expanded and extensively revised edition, the authors have retained most of the analytically based material that forms the pedagogical content of the first edition, and have expanded it to present the theoretical foundations of modern numerical analysis. Application of the latter is illustrated by examples that have been chosen to complement the analytical approaches to solving fairly simple problems of sound radiation, transmission and fluid-structural coupling that are presented in the first edition. The number of examples of experimental data that relate to the theoretical content, and illustrate important features of vibroacoustic interaction, has been augmented by the inclusion of a selection from the vast amount of material published during the past twenty five years. The final chapter on the active control of sound and vibration has no precursor in the first edition.* Covers theoretical approaches to modeling and analysis* Highly applicable to challenges in industry and academia* For engineering students to use throughout their career
Download or read book IUTAM Symposium on the Vibration Analysis of Structures with Uncertainties written by Alexander K. Belyaev and published by Springer Science & Business Media. This book was released on 2010-12-02 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Symposium was aimed at the theoretical and numerical problems involved in modelling the dynamic response of structures which have uncertain properties due to variability in the manufacturing and assembly process, with automotive and aerospace structures forming prime examples. It is well known that the difficulty in predicting the response statistics of such structures is immense, due to the complexity of the structure, the large number of variables which might be uncertain, and the inevitable lack of data regarding the statistical distribution of these variables. The Symposium participants presented the latest thinking in this very active research area, and novel techniques were presented covering the full frequency spectrum of low, mid, and high frequency vibration problems. It was demonstrated that for high frequency vibrations the response statistics can saturate and become independent of the detailed distribution of the uncertain system parameters. A number of presentations exploited this physical behaviour by using and extending methods originally developed in both phenomenological thermodynamics and in the fields of quantum mechanics and random matrix theory. For low frequency vibrations a number of presentations focussed on parametric uncertainty modelling (for example, probabilistic models, interval analysis, and fuzzy descriptions) and on methods of propagating this uncertainty through a large dynamic model in an effi cient way. At mid frequencies the problem is mixed, and various hybrid schemes were proposed. It is clear that a comprehensive solution to the problem of predicting the vibration response of uncertain structures across the whole frequency range requires expertise across a wide range of areas (including probabilistic and non-probabilistic methods, interval and info-gap analysis, statistical energy analysis, statistical thermodynamics, random wave approaches, and large scale computations) and this IUTAM symposium presented a unique opportunity to bring together outstanding international experts in these fields.
Download or read book Toward a Theory of Diffuse Energy Transport in Large Irregular Structures written by Nicholas L. Wolff and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We develop a "concatenation ansatz" of energy flow in large, complex structures to predict the response of a nominally diffusive system. The concatenation ansatz is inspired by statistical energy analysis (SEA) which is, in turn, based on an analogy to diffusive heat transfer. Where in heat transfer, thermal energy flows from areas of hot temperature to those of cold temperature, in SEA vibrational or acoustic energy is assumed to flow from structures or volumes with high energy density to those with low energy density. The word "ansatz" refers to a "starting assumption." Here we make the ansatz that transport of diffuse vibrational energy over short-time intervals contains all information needed for estimates of energy flow over long times, and that these estimates can be extracted by concatenating successive copies of transport over short-time intervals. Though not based directly on an assumption of diffusion, the ansatz contains the same phase-neglecting principle as SEA and implies a diffusion limit equivalent to SEA. In this thesis, the concatenation ansatz is tested on various benchmark systems, some typically studied using SEA, other not. We carry out direct numerical simulation (DNS) in the time domain using finite-difference and finite-element methods. We study two- and three-room systems with rooms connected by a window allowing energy to flow between them. We study a torus, a single statistically homogenous structure, which cannot be studied by SEA. We also study plates coupled by springs allowing energy to flow between the plates. This type of system is of interest to the structures community. Finally, we study an interesting "hybrid" system consisting of two coupled systems. One system would typically be studied statistically in a framework such as SEA. The other system, not satisfying the assumptions of SEA, would typically be studied deterministically in a framework such as finite-element analysis.
Download or read book Mechanics of Flow Induced Vibration written by Rajeev Jaiman and published by Springer Nature. This book was released on 2023-06-10 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses various passive and active techniques for controlling unsteady flow dynamics and associated coupled mechanics of fluid-structure interaction. Coupled multiphysics and multidomain simulations are emerging and challenging research areas, which have received significant attention during the past decade. One of the most common multiphysics and multidomain problems is fluid-structure interaction (FSI), i.e., the study of coupled physical systems involving fluid and a structure that have a mechanical influence on each other. Regardless of the application area, the investigation toward modeling of fluid-structure interaction and the underlying mechanisms in dealing with coupled fluid-structure instability with real-world applications remains a challenge to scientists and engineers. This book is designed for students and researchers who seek knowledge of computational modeling and control strategies for fluid-structure interaction. Specifically, this book provides a comprehensive review of the underlying unsteady physics and coupled mechanical aspects of the fluid-structure interaction of freely vibrating bluff bodies, the self-induced flapping of thin flexible structures, and aeroelasticity of shell structures. Understanding flow-induced loads and vibrations can lead to safer and cost-effective structures, especially for light and high-aspect ratio structures with increased flexibility and harsh environmental conditions. Using the body-fitted and moving mesh formulations, the physical insights associated with structure-to-fluid mass ratios, Reynolds number, nonlinear structural deformation, proximity interference, near-wall contacts, free-surface, and other interacting physical fields are covered in this book. In conjunction with the control techniques, data-driven model reduction approaches based on subspace projection and deep neural calculus are covered for low-dimensional modeling of unsteady fluid-structure interaction.
Download or read book Structural Intensity and Vibrational Energy Flow written by G. Pavic and published by . This book was released on 1993 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
