Acoustic analyses using Matlab and Ansys /
Carl Q. Howard and Benjamin S. Cazzolato.
- xxxvii, 670 pages ; 24 cm
Includes bibliographical references and index.
Introduction
About This Book
A Philosophy for Finite Element Modelling
Analysis Types
Background
Learning Outcomes
Introduction
Pressure Formulated Acoustic Elements
Fluid Structure Interaction
Displacement Formulated Acoustic Elements
Practical Aspects of Modelling Acoustic Systems with FEA
Element Types in ANSYS for Acoustic Analyses
ACT Acoustics Extension
Other Acoustic Loads
Other Measures of Acoustic Energy
Mesh Density
Use of Symmetry
Ducts
Learning Outcomes
Theory
Example of a Circular Duct
Resonator Silencers
Non-Plane Waves
Gas Temperature Variations
Sound Inside a Rigid-Walled Cavity
Learning Outcomes
Description of the System
Theory
Example
Introduction to Damped Acoustic Systems
Learning Outcomes
Introduction
General Discussion of Damping of Vibro-Acoustic Systems in ANSYS
Theory
Example: 2D Impedance Tube with a Real Admittance
Example: 2D Impedance Tube with a Complex Termination
Impedance
Example: 2D Impedance Tube
Example: 3D Impedance Tube
Example: 3D Waveguide with Visco-Thermal Losses
Application of Spectral Damping to a Rigid Walled Cavity
Sound Absorption in a Lined Duct
Learning Outcomes
Definitions
Description of the System
Theory
Example - Locally Reacting Liner
Example - Bulk Reacting Liner
Room Acoustics
Learning Outcomes
Description of the System
Theory
Example: Reverberation Room
Radiation and Scattering
Learning Outcomes
Wave Absorbing Conditions
Example: Directivity of Acoustic Wave Sources
Example: Radiation of a Baffled Piston
Scattering
Example: Scattering from a Cylinder
Fluid Structure Interaction
Learning Outcomes
Fluid Structure Interaction Using ANSYS
FSI Using Modal Coupling
Example: Flexible Plate Attached to an Acoustic Cavity
Example: Transmission Loss of a Simply Supported Panel
A. Files Included With This Book
B. Advice for Using ANSYS
C. MATLAB Functions for Modal Coupling
D. Errors
E. Export of Nodal Area from ANSYS
Bibliography
Index
"This book describes the use of Ansys finite element analysis software and MATLAB® to solve acoustic problems. These range from simple textbook problems, to complex ones that can only be solved using FEA software. The book includes instructions on relevant mathematical modelling, and hints on the use of Ansys software. The MATLAB source code provides readers with valuable tools for doing their own validations, and is available for download. The book provides practical training in the use of FEA for basic modelling and solving acoustic problems"-- "This book describes the use of Ansys finite element analysis software and MATLAB