Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements
Title | Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements PDF eBook |
Author | Martina Pospiech |
Publisher | Logos Verlag Berlin GmbH |
Pages | 142 |
Release | 2012 |
Genre | Mathematics |
ISBN | 3832531394 |
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.
Numerical Simulation of Structural Acoustics Using Coupled Finite Element and Boundary Element Techniques
Title | Numerical Simulation of Structural Acoustics Using Coupled Finite Element and Boundary Element Techniques PDF eBook |
Author | Debashis Basu |
Publisher | |
Pages | 434 |
Release | 1997 |
Genre | |
ISBN |
Applied mechanics reviews
Title | Applied mechanics reviews PDF eBook |
Author | |
Publisher | |
Pages | 400 |
Release | 1948 |
Genre | Mechanics, Applied |
ISBN |
The Journal of the Acoustical Society of America
Title | The Journal of the Acoustical Society of America PDF eBook |
Author | Acoustical Society of America |
Publisher | |
Pages | 1360 |
Release | 2006 |
Genre | Acoustical engineering |
ISBN |
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 456 |
Release | 1995 |
Genre | Aeronautics |
ISBN |
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods
Title | Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods PDF eBook |
Author | Steffen Marburg |
Publisher | Springer Science & Business Media |
Pages | 584 |
Release | 2008-02-27 |
Genre | Science |
ISBN | 3540774483 |
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.
Finite Element and Boundary Methods in Structural Acoustics and Vibration
Title | Finite Element and Boundary Methods in Structural Acoustics and Vibration PDF eBook |
Author | Noureddine Atalla |
Publisher | CRC Press |
Pages | 0 |
Release | 2017-07-26 |
Genre | |
ISBN | 9781138749177 |
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.