Acoustic Scattering from Ellipses by the Modal Element Method PDF Download
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Author: Kevin Lee Kreider
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Author: Kevin Lee Kreider
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781725062900
Category :
Languages : en
Pages : 30
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Book Description
The modal element method is used to study acoustic scattering from ellipses, which may be acoustically soft (absorbing) or hard (reflecting). Because exact solutions are available, the results provide a benchmark for algorithm performance for scattering from airfoils and similar shapes. Numerical results for scattering from rigid ellipses are presented for a wide variety of eccentricities at moderate frequencies. These results indicate that the method is practical. Kreider, Kevin L. and Baumeister, Kenneth J. Glenn Research Center NASA-TM-106935, E-9663, NAS 1.15:106935 RTOP 505-62-52...
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 936
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 902
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 470
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Author: Roger Ohayon
Publisher: Elsevier
ISBN: 0080541941
Category : Science
Languages : en
Pages : 437
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Book Description
Structural Acoustics and Vibration presents the modeling of vibrations of complex structures coupled with acoustic fluids in the low and medium frequency ranges. It is devoted to mechanical models, variationalformulations and discretization for calculating linear vibrations in the frequency domain of complex structures. The book includes theoretical formulations which are directly applicable to develop computer codes for the numerical simulation of complex systems, and gives a general scientific strategy to solve various complex structural acoustics problems in different areas such as spacecraft, aircraft, automobiles, and naval structures. The researcher may directly apply the material of the book to practical problems such as acoustic pollution, the comfort of passengers, and acoustic loads induced by propellers. Structural Acoustics and Vibration considers the mechanical and numerical aspects of the problem, and gives original solutions to the predictability of vibrations of complex structures interacting with internal and external, liquid and gaseous fluids. It is a self-contained general synthesis with a didactic presentation and fills the gap between analytical methods applied to simple geometries and statistical methods, which are useful in high frequency structural acoustic problems. Provides for the first time complex structures in scientific literature Presents a self-contained general synthesis with a didactic presentation Integrates the most advanced research topics on the subject Enables the researcher to solve complex structural acoustics problems in areas such as spacecraft, aircraft, automobiles, and naval structures Fills the gap between analytical methods applied to simple geometries and statistical methods Contains advanced mechanical and numerical modeling Provides appropriate formulations directly applicable for developing computer codes for the numerical simulation of complex systemssystems
Author: P. A. Martin
Publisher: Cambridge University Press
ISBN: 0521865549
Category : Mathematics
Languages : en
Pages : 13
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Book Description
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Author: F.P. Mechel
Publisher: Springer Science & Business Media
ISBN: 3662072963
Category : Technology & Engineering
Languages : en
Pages : 1197
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Book Description
This application-orientated collection of formulas has been written by applied scientists and industrial engineers for design professionals and students who work in engineering acoustics. It is subdivided into the most important fields of applied acoustics, each dealing with a well-defined type of problem. It provides easy and rapid access to profound and comprehensive information. In order to keep the text as concise as possible, the derivation of a formula is described as briefly as possible and the reader is referred to the original source. Besides the formulas, useful principles and computational procedures are given.
Author: Trevor J. Cox
Publisher: CRC Press
ISBN: 0203893050
Category : Architecture
Languages : en
Pages : 495
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Book Description
Absorbers and diffusers are two of the main design tools for altering the acoustic conditions of rooms, semi-enclosed spaces and the outdoor environment. Their correct use is important for delivering high quality acoustics. Unique and authoritative, this book decribes how to effectively measure, model, design and apply diffusers and absorbers. It is a resource for new and experienced acousticians, seeking an understanding of the evolution, characteristics and application of modern diffusers. Absorption is a more established technology and so the book blends traditional designs with modern developments. The book covers practical and theoretical aspects of absorbers and diffusers and is well illustrated with examples of installations and case studies. This new edition brings Acoustic Absorbers and Diffusers up-to-date with current research, practice and standards. New developments in measurement, materials, theory and practice since the first edition (published in 2004) are included. The sections on absorbers are extended to include more about noise control.
