Techniques and Tools for Solving Acoustics Problems This is the first book of its kind that describes the use of ANSYS® finite element analysis (FEA) software, and MATLAB® engineering programming software to solve acoustic problems. It covers simple text book problems, such as determining the natural frequencies of a duct, to progressively more complex problems that can only be solved using FEA software, such as acoustic absorption and fluid-structure-interaction. It also presents benchmark cases that can be used as starting points for analysis. There are practical hints too for using ANSYS software. The material describes how to solve numerous problems theoretically, and how to obtain solutions from the theory using MATLAB engineering software, as well as analyzing the same problem using ANSYS Workbench and ANSYS Mechanical APDL. Developed for the Practicing Engineer Free downloads on http://www.mecheng.adelaide.edu.au/avc/software, including MATLAB source code, ANSYS APDL models, and ANSYS Workbench models Includes readers' techniques and tips for new and experienced users of ANSYS software Identifies bugs and deficiencies to help practitioners avoid making mistakes Acoustic Analyses Using MATLAB® and ANSYS® can be used as a textbook for graduate students in acoustics, vibration, and related areas in engineering; undergraduates in mechanical and electrical engineering; and as an authoritative reference for industry professionals.
Uses MATLAB and ANSYS for acoustic analysisProvides free downloads, including MATLAB source code, ANSYS APDL models, and ANSYS Workbench modelsDescribes examples that can be used as verification cases: practitioners can use the models provided in the book to verify that their particular problems predict the same results as theory and finite element analysisIdentifies errors to help practitioners avoid making mistakes
IntroductionAbout This BookA Philosophy for Finite Element ModellingAnalysis TypesBackgroundLearning OutcomesIntroductionPressure Formulated Acoustic ElementsFluid Structure InteractionDisplacement Formulated Acoustic ElementsPractical Aspects of Modelling Acoustic Systems with FEAElement Types in ANSYS for Acoustic AnalysesACT Acoustics ExtensionOther Acoustic LoadsOther Measures of Acoustic EnergyMesh DensityUse of SymmetryDuctsLearning OutcomesTheoryExample of a Circular DuctResonator SilencersNon-Plane WavesGas Temperature VariationsSound Inside a Rigid-Walled CavityLearning OutcomesDescription of the SystemTheoryExampleIntroduction to Damped Acoustic SystemsLearning OutcomesIntroductionGeneral Discussion of Damping of Vibro-Acoustic Systems in ANSYSTheoryExample: 2D Impedance Tube with a Real AdmittanceExample: 2D Impedance Tube with a Complex TerminationImpedanceExample: 2D Impedance TubeExample: 3D Impedance TubeExample: 3D Waveguide with Visco-Thermal LossesApplication of Spectral Damping to a Rigid Walled CavitySound Absorption in a Lined DuctLearning OutcomesDefinitionsDescription of the SystemTheoryExample - Locally Reacting LinerExample - Bulk Reacting LinerRoom AcousticsLearning OutcomesDescription of the SystemTheoryExample: Reverberation RoomRadiation and ScatteringLearning OutcomesWave Absorbing ConditionsExample: Directivity of Acoustic Wave SourcesExample: Radiation of a Baffled PistonScatteringExample: Scattering from a CylinderFluid Structure InteractionLearning OutcomesFluid Structure Interaction Using ANSYSFSI Using Modal CouplingExample: Flexible Plate Attached to an Acoustic CavityExample: Transmission Loss of a Simply Supported PanelA. Files Included With This BookB. Advice for Using ANSYSC. MATLAB Functions for Modal CouplingD. ErrorsE. Export of Nodal Area from ANSYSBibliographyIndex
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