designing quiet structures a sound power minimization approach

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Designing Quiet Structures

Author : Gary H. Koopmann
ISBN : 0080504043
Genre : Technology & Engineering
File Size : 52. 82 MB
Format : PDF
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This book is the first of its kind. It provides the reader with a logical and highly quantitative means of including noise as a parameter in the early design stages of a machine or structure. The unique and unified methodology builds upon the familiar disciplines of acoustics, structural dynamics and optimization. It also exemplifies the art of simplification - the essence of all good engineering design. 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. 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. 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

Topology Optimization In Structural And Continuum Mechanics

Author : George I. N. Rozvany
ISBN : 9783709116432
Genre : Science
File Size : 86. 7 MB
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The book covers new developments in structural topology optimization. Basic features and limitations of Michell’s truss theory, its extension to a broader class of support conditions, generalizations of truss topology optimization, and Michell continua are reviewed. For elastic bodies, the layout problems in linear elasticity are discussed and the method of relaxation by homogenization is outlined. The classical problem of free material design is shown to be reducible to a locking material problem, even in the multiload case. For structures subjected to dynamic loads, it is explained how they can be designed so that the structural eigenfrequencies of vibration are as far away as possible from a prescribed external excitation frequency (or a band of excitation frequencies) in order to avoid resonance phenomena with high vibration and noise levels. For diffusive and convective transport processes and multiphysics problems, applications of the density method are discussed. In order to take uncertainty in material parameters, geometry, and operating conditions into account, techniques of reliability-based design optimization are introduced and reviewed for their applicability to topology optimization.

Optimization Of Structural And Mechanical Systems

Author :
ISBN : 9789814477222
Genre :
File Size : 58. 97 MB
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Engineering Vibroacoustic Analysis

Author : Shung H. Sung
ISBN : 9781119953449
Genre : Technology & Engineering
File Size : 39. 78 MB
Format : PDF, ePub
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The book describes analytical methods (based primarily on classical modal synthesis), the Finite Element Method (FEM), Boundary Element Method (BEM), Statistical Energy Analysis (SEA), Energy Finite Element Analysis (EFEA), Hybrid Methods (FEM-SEA and Transfer Path Analysis), and Wave-Based Methods. The book also includes procedures for designing noise and vibration control treatments, optimizing structures for reduced vibration and noise, and estimating the uncertainties in analysis results. Written by several well-known authors, each chapter includes theoretical formulations, along with practical applications to actual structural-acoustic systems. Readers will learn how to use vibroacoustic analysis methods in product design and development; how to perform transient, frequency (deterministic and random), and statistical vibroacoustic analyses; and how to choose appropriate structural and acoustic computational methods for their applications. The book can be used as a general reference for practicing engineers, or as a text for a technical short course or graduate course.

Proceedings Of The Asme Noise Control And Acoustics Division

Author :
ISBN : UOM:39015048088200
Genre : Acoustical engineering
File Size : 59. 15 MB
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Proceedings Of The Asme Noise Control And Acoustics Division 2005

Author : American Society of Mechanical Engineers. Noise Control and Acoustics Division
ISBN : 0791842258
Genre : Technology & Engineering
File Size : 73. 29 MB
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Proceedings Of The Ninth International Modal Analysis Conference April 15 19 1991

Author : Union College (Schenectady, N.Y.)
ISBN : 0912053321
Genre : Structural dynamics
File Size : 79. 82 MB
Format : PDF, Kindle
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Optimization Concepts And Applications In Engineering

Author : Ashok D. Belegundu
ISBN : UOM:39015047479400
Genre : Technology & Engineering
File Size : 26. 91 MB
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"This book presents theory and algorithms for optimization together with applications. Algorithms are discussed in detail with respect to implementation aspects and are accompanied by computer programs. The software parallels the presentation in the text. The software helps in the solution of practical problems with several variables and can be integrated with the user's simulation programs. A variety of optimization techniques are included. The book serves as a text in a course on Engineering Optimization, Nonlinear Programming, or Structural Optimization. The book is intended to be a textbook for graduate students and senior undergraduates and also a learning resource for practicing engineers."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved

Proceedings Of Noise Con

Author :
ISBN : 0931784379
Genre : Noise control
File Size : 47. 40 MB
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Aiaa Journal

Author : American Institute of Aeronautics and Astronautics
ISBN : STANFORD:36105122656072
Genre : Aeronautics
File Size : 68. 78 MB
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