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DESIGNING QUIET STRUCTURES

Description

 

Strategies for designing quiet structures require extensive analytical and experimental tools. For computing the sound power from complex structures the authors recommend a new 3-D, lumped parameter formulation. Not only this, they also include, on diskette, an original numerical program POWER. This fully developed, user-friendly program can be applied generally to noise-control-by-design problems. Detailed instructions for running the application are given in the appendix as well as several sample problems to help the user get started.

The authors also describe a new instrument: a specially developed resistance probe used to measure a structure=92s acoustic surface resistance. As an example, the procedure is outlined for measuring the valve cover of an internal combustion engine. Indeed, throughout the book the reader is presented with actual experiments, numerical and physical that they can replicate in their own laboratory.

This is a must-have book for engineers working in industries that include noise control in the design of a product. Its practical and didactic approach also makes it ideally suited to graduate students.

 

    Key Features

  • First text covering the design of quiet structures

  • Written by two of the leading experts in the world in the area of noise control

  • Strong in its integration of structural dynamics, acoustics, and optimization theory

  • Accompanied by a computer program that allows the computation of sound power

  • Presents numerous applications of noise-control-by-design methods as well as methods for enclosed and open spaces

  • Each chapter is supported by homework problems and demonstration experiments

Keywords

EQUATIONS ACOUSTICS Wave Equation Derivation Helmholtz Equation Time-Harmonic Vibrations Acoustic Boundary Value Problems Time-Averaged Acoustic Power Vibrating Structure Inhomogeneous Form Helmholtz Equation Green's Functions Free-Space Kirchhoff-Helmholtz Equation Radiation LUMPED PARAMETER MODEL ACOUSTIC RADIATION lumped parameter model Oscillating Sphere Integral Solution Vibrating Structure Acoustic Field Acoustic Power Approximation NUMERICAL SOLUTION RADIATION Boundary Condition Structural Components Velocity Matching Scheme Resistance Matrix Acoustic Power Output RESISTANCE MATRIX COMPUTATIONS MATERIAL TAILORING RADIATED ACOUSTIC POWER SOUND IN AN ENCLOSURE COMPUTER PROGRAMS

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