Numerical Simulation Of Structural Acoustics Using Coupled Finite Element And Boundary Element Techniques
DOWNLOAD
Download Numerical Simulation Of Structural Acoustics Using Coupled Finite Element And Boundary Element Techniques PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Numerical Simulation Of Structural Acoustics Using Coupled Finite Element And Boundary Element Techniques book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Numerical Simulation Of Structural Acoustics Using Coupled Finite Element And Boundary Element Techniques
DOWNLOAD
Author : Debashis Basu
language : en
Publisher:
Release Date : 1997
Numerical Simulation Of Structural Acoustics Using Coupled Finite Element And Boundary Element Techniques written by Debashis Basu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Finite Element And Boundary Methods In Structural Acoustics And Vibration
DOWNLOAD
Author : Noureddine Atalla
language : en
Publisher: CRC Press
Release Date : 2017-07-26
Finite Element And Boundary Methods In Structural Acoustics And Vibration written by Noureddine Atalla and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-26 with categories.
A unique and in-depth presentation of the finite element method (FEM) and the boundary element method (BEM) in structural acoustics and vibrations, this book illustrates the principles using a logical and progressive methodology, which leads to a thorough understanding of their physical and mathematical principles and their implementation to solve a wide range of problems in structural acoustics and vibration. This book helps readers to understand the principles, use of the FEM, and the BEM in structural acoustics and vibrations.
Numerical Simulations In Room Acoustics Using Direct Coupling Techniques And Finite Elements
DOWNLOAD
Author : Martina Pospiech
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2012
Numerical Simulations In Room Acoustics Using Direct Coupling Techniques And Finite Elements written by Martina Pospiech and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Mathematics categories.
This thesis presents a coupling approach for time-harmonic problems in linear room acoustics. Therein the closed acoustic system is subdivided into air, sound source and different boundary components. The sound field of each air component is approximated with the help of modal basis functions and continuous transitions between single components are enabled by enforcing coupling conditions. Coupling to realistic boundary conditions is realized by wavenumber- and frequency-dependent impedance functions for plate-like sound absorbers. Afterwards the solution is computed by minimizing the energy based on Hamilton's Principle. For computing the basis functions and the energies of the components the Spectral Finite Element Method and the adapted Patch Recovery Method are applied. Finally numerical benchmark-simulations show the applications of this coupling approach.
Coupled Boundary And Finite Element Methods For The Solution Of The Dynamic Fluid Structure Interaction Problem
DOWNLOAD
Author : Siamak Amini
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Coupled Boundary And Finite Element Methods For The Solution Of The Dynamic Fluid Structure Interaction Problem written by Siamak Amini and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This text considers the problem of the dynamic fluid-structure interaction between a finite elastic structure and the acoustic field in an unbounded fluid-filled exterior domain. The exterior acoustic field is modelled through a boundary integral equation over the structure surface. However, the classical boundary integral equation formulations of this problem either have no solutions or do not have unique solutions at certain characteristic frequencies (which depend on the surface geometry) and it is necessary to employ modified boundary integral equation formulations which are valid for all frequencies. The particular approach adopted here involves an arbitrary coupling parameter and the effect that this parameter has on the stability and accuracy of the numerical method used to solve the integral equation is examined. The boundary integral analysis of the exterior acoustic problem is coupled with a finite element analysis of the elastic structure in order to investigate the interaction between the dynamic behaviour of the structure and the associated acoustic field. Recently there has been some controversy over whether or not the coupled problem also suffers from the non-uniqueness problems associated with the classical integral equation formulations of the exterior acoustic problem. This question is resolved by demonstrating that .the solution to the coupled problem is not unique at the characteristic frequencies and that it is necessary to employ an integral equation formulation valid for all frequencies.
Fluid Structure Interaction
DOWNLOAD
Author : Jean-François Sigrist
language : en
Publisher: John Wiley & Sons
Release Date : 2015-10-12
Fluid Structure Interaction written by Jean-François Sigrist and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-12 with Science categories.
Fluid-Structure Interaction: An Introduction to Finite Element Coupling fulfils the need for an introductive approach to the general concepts of Finite and Boundary Element Methods for FSI, from the mathematical formulation to the physical interpretation of numerical simulations. Based on the author’s experience in developing numerical codes for industrial applications in shipbuilding and in teaching FSI to both practicing engineers and within academia, it provides a comprehensive and self–contained guide that is geared toward both students and practitioners of mechanical engineering. Composed of six chapters, Fluid–Structure Interaction: An Introduction to Finite Element Coupling progresses logically from formulations and applications involving structure and fluid dynamics, fluid and structure interactions and opens to reduced order-modelling for vibro-acoustic coupling. The author describes simple yet fundamental illustrative examples in detail, using analytical and/or semi–analytical formulation & designed both to illustrate each numerical method and also to highlight a physical aspect of FSI. All proposed examples are simple enough to be computed by the reader using standard computational tools such as MATLAB, making the book a unique tool for self–learning and understanding the basics of the techniques for FSI, or can serve as verification and validation test cases of industrial FEM/BEM codes rendering the book valuable for code verification and validation purposes.
Computational Acoustics Of Noise Propagation In Fluids Finite And Boundary Element Methods
DOWNLOAD
Author : Steffen Marburg
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-27
Computational Acoustics Of Noise Propagation In Fluids Finite And Boundary Element Methods written by Steffen Marburg and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-27 with Science categories.
The book provides a survey of numerical methods for acoustics, namely the finite element method (FEM) and the boundary element method (BEM). It is the first book summarizing FEM and BEM (and optimization) for acoustics. The book shows that both methods can be effectively used for many other cases, FEM even for open domains and BEM for closed ones. Emphasis of the book is put on numerical aspects and on treatment of the exterior problem in acoustics, i.e. noise radiation.
Numerical Simulation Of Mechatronic Sensors And Actuators
DOWNLOAD
Author : Manfred Kaltenbacher
language : en
Publisher: Springer
Release Date : 2015-02-07
Numerical Simulation Of Mechatronic Sensors And Actuators written by Manfred Kaltenbacher and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-07 with Technology & Engineering categories.
Like the previous editions also the third edition of this book combines the detailed physical modeling of mechatronic systems and their precise numerical simulation using the Finite Element (FE) method. Thereby, the basic chapter concerning the Finite Element (FE) method is enhanced, provides now also a description of higher order finite elements (both for nodal and edge finite elements) and a detailed discussion of non-conforming mesh techniques. The author enhances and improves many discussions on principles and methods. In particular, more emphasis is put on the description of single fields by adding the flow field. Corresponding to these field, the book is augmented with the new chapter about coupled flow-structural mechanical systems. Thereby, the discussion of computational aeroacoustics is extended towards perturbation approaches, which allows a decomposition of flow and acoustic quantities within the flow region. Last but not least, applications are updated and restructured so that the book meets modern demands.
Coupling Of Structural Dynamic And Acoustic Analyses Using The Fem And Bem
DOWNLOAD
Author : Xin Han
language : en
Publisher:
Release Date : 2012
Coupling Of Structural Dynamic And Acoustic Analyses Using The Fem And Bem written by Xin Han and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Noise from structural vibration is a major consideration in the design and manufacturing of a product, such as an automobile, airplane, and other consumer goods. Acoustic simulation is an important step to optimize the performance of many new products early in the design stage rather than correcting the mistakes afterwards. Effective and efficient numerical modeling and simulation methods will be important tools for noise prediction during the design stage of products. This thesis work focuses on integrating the numerical methods in the prediction of noise from vibrating structures. To calculate the sound radiated from a vibrating structure, both a structural dynamic problem and an acoustic wave problem should be considered. In this study, the finite element method (FEM) is chosen for the structural dynamic analysis in order to calculate the natural frequencies and harmonic responses of the structure. The boundary element method (BEM) is used in the acoustic analysis of the structure to calculate the radiated sound field. In the BEM, only the surface of a sound radiating structure is discretized and the simulation of sound fields in unbounded domains is easy, yielding an efficient mesh generation and preprocessing. To couple the FEM analysis with the BEM analysis, a computer program, or translation code, is developed for mapping the model and velocity boundary condition (BC) for the acoustic analysis from the results of the dynamic analysis. Several element types in the FEM using the software ABAQUS (r) are implemented in the translation code and their performances are studied. Different BEM solvers in the software FastBEM Acoustics (r) developed earlier at the University of Cincinnati (UC) and based on the fast multipole method (FMM), the adaptive cross approximation (ACA) method and the fast conventional BEM are selected in this study. The correctness and feasibility of the developed code are verified using a pulsating sphere model and a vibrating plate model. Numerical results and analytical data are found to be in good agreement using the developed translation code. As a large-scale and practical application, a wind turbine model is also used to study the noise propagation on the ground due to the vibration of the turbine structure and the rotation of turbine blades. It is found that the coupled analysis with the FEM and BEM can model the noise prediction of large-scale structures effectively and efficiently.
The Scaled Boundary Finite Element Method
DOWNLOAD
Author : Chongmin Song
language : en
Publisher: John Wiley & Sons
Release Date : 2018-06-19
The Scaled Boundary Finite Element Method written by Chongmin Song and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-19 with Science categories.
An informative look at the theory, computer implementation, and application of the scaled boundary finite element method This reliable resource, complete with MATLAB, is an easy-to-understand introduction to the fundamental principles of the scaled boundary finite element method. It establishes the theory of the scaled boundary finite element method systematically as a general numerical procedure, providing the reader with a sound knowledge to expand the applications of this method to a broader scope. The book also presents the applications of the scaled boundary finite element to illustrate its salient features and potentials. The Scaled Boundary Finite Element Method: Introduction to Theory and Implementation covers the static and dynamic stress analysis of solids in two and three dimensions. The relevant concepts, theory and modelling issues of the scaled boundary finite element method are discussed and the unique features of the method are highlighted. The applications in computational fracture mechanics are detailed with numerical examples. A unified mesh generation procedure based on quadtree/octree algorithm is described. It also presents examples of fully automatic stress analysis of geometric models in NURBS, STL and digital images. Written in lucid and easy to understand language by the co-inventor of the scaled boundary element method Provides MATLAB as an integral part of the book with the code cross-referenced in the text and the use of the code illustrated by examples Presents new developments in the scaled boundary finite element method with illustrative examples so that readers can appreciate the significant features and potentials of this novel method—especially in emerging technologies such as 3D printing, virtual reality, and digital image-based analysis The Scaled Boundary Finite Element Method: Introduction to Theory and Implementation is an ideal book for researchers, software developers, numerical analysts, and postgraduate students in many fields of engineering and science.
Fluid Structure Interaction
DOWNLOAD
Author : Cedric Leblond
language : en
Publisher: John Wiley & Sons
Release Date : 2022-11-30
Fluid Structure Interaction written by Cedric Leblond and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-30 with Science categories.
This book provides a comprehensive overview of the numerical simulation of fluid–structure interaction (FSI) for application in marine engineering. Fluid–Structure Interaction details a wide range of modeling methods (numerical, semi-analytical, empirical), calculation methods (finite element, boundary element, finite volume, lattice Boltzmann method) and numerical approaches (reduced order models and coupling strategy, among others). Written by a group of experts and researchers from the naval sector, this book is intended for those involved in research or design who are looking to gain an overall picture of hydrodynamics, seakeeping and performance under extreme loads, noise and vibration. Using a concise, didactic approach, the book describes the ways in which numerical simulation contributes to modeling and understanding fluid–structure interaction for designing and optimizing the ships of the future.