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Trang 4Vehicle noise and vibration refinement Edited by Xu Wang CRC Press Boca Raton Boston New York Washington, DC
Trang 5Published by Woodhead Publishing Limited, Abington Hall, Granta Park, Great Abington, Cambridge CB21 6AH, UK
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Trang 6Part | 13 1Š 1.6 1.7 2.1 2.3 Contents Contributor contact details Preface Introduction Rationale and history of vehicle noise and vibration refinement X WANG, RMIT University, Australia Introduction Objectives and significance of vehicle noise and vibration refinement
Scope of vehicle noise and vibration refinement
The vehicle development process and vehicle noise
and vibration refinement
Vehicle noise and vibration term definitions History of motoring and vehicle refinement References and bibliography
Target setting and benchmarking for vehicle noise and vibration refinement
X WANG, RMIT University, Australia
Introduction
Trang 7vi Part Il 3.9 3.10 3.11 3.12 41 42 43 44 45 46 47 48 49 4.10 411 31 5.2 5.3 54 35 Contents
Measurement and modelling
Vehicle vibration measurement and analysis X WANG, RMIT University, Australia
Introduction Hand sensing
Basic vibration measurements
ration response investigation and vibration testing Environmental testing
Mounting the test object
Measuring the complex elastic modulus
Quoting vibration levels Vibration isolation The vibration absorber Case studies Bibliography
Vehicle noise measurement and analysis
X WANG, RMIT University, Australia Introduction Sound fundamentals Vehicle noise Measuring microphones Measuring amplifiers Calibration Background noise Recording sound
Analysis and presentation of noise data Artificial head technology and psychoacoustics Bibliography
Random signal processing and spectrum analysis in vehicle noise and vibration refinement
X WANG, RMIT University, Australia Random data and process
Correlation analysis Fourier series
Spectral density analysis
Trang 857 5.9 5.10 6.1 6.2 6.3 64 6.5 6.6 71 73 74 75 76 T4 78 79 7.10 8.1 8.2 8.3 Contents Weighting functions Relationship between complex frequency response and impulsive response Frequency response functions Bibliography
Theory and application of modal analysis in vehicle noise and vibration refinement
M Kronast, Ford-Werke GmbH, Germany
Introduction
Application of modal analysis in vehicle development Theory of modal analysis
Methods for performing modal analysis Limitations and trends
References
Mid- and high-frequency problems in vehicle noise and vibration refinement — statistical energy analysis and wave approaches
X WANG, RMIT University, Australia Introduction
Modal approach
Energy sharing between two oscillators
Energy exchange in multi-degree-of-freedom systems Wave approach to statistical energy analysis (SEA) Procedures of the statistical energy analysis approach Evaluation of the statistical energy analysis subsystem parameters Hybrid deterministic and the statistical energy analysis approach Application example References
Advanced simulation techniques in vehicle noise and vibration refinement
N HAMPL, Ford-Werke GmbH, Germany Introduction
Trang 9viii 8.5 91 9.2 9.3 94 9.9 Part Il 10 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 11 Contents Application of virtual reality for vehicle noise and vibration refinement Conclusions Sources of further information and advice References
Advanced experimental techniques in vehicle noise and vibration refinement
T AHLERSMEYER, Ford-Werke GmbH, Germany
Transfer path analysis technique
Sound intensity technique for source identification Acoustic camera: beamforming and nearfield acoustic holography techniques for source diagnostics
Laser techniques for dynamic analysis and source identification
Sound quality and psychoacoustics: measurement and analysis
Ultrasound diagnostic techniques Advanced material testing techniques
Advanced tachometer reference tracking techniques References
Noise and vibration refinement in vehicle systems Aerodynamic noise and its refinement in vehicles
S WATKINS, RMIT University, Australia
The importance of aerodynamic noise Aerodynamic noise sources: background
Modelling, relevant theory and the possibilities of simulation Causes of hydrodynamic pressure fluctuations and their reduction Aeroacoustic measurement techniques and psychoacoustic analysis Conclusions Acknowledgements References
Trang 10113 114 115 11.6 117 12 121 12.2 12.3 12.4 12.5 12.6 12.7 13 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14 14.1 14.2 14.3 14.4 14.5 14.6 Contents Control strategies Commercial systems Future trends Sources of further information and advice References Noise and vibration refinement of powertrain systems in vehicles D.C BAILLIE, General Motors Holden Ltd, Australia Introduction
Principles and methods
Powertrain noise sources and paths Enablers and applications
Future trends Conclusions References
Vehicle interior noise refinement — cabin sound
package design and development
D ViG£, Centro Ricerche Fiat, Italy Introduction
Internal noise sources in a vehicle Vehicle noise paths
Basic principles
Sound package solutions to reduce the interior noise Simulation methodologies for interior noise
Target setting and deployment on vehicle subsystems Conclusions References Noise and vibration refinement of chassis and suspension B ReFr, Ford-Werke GmbH, Germany Introduction
Road-induced noise, vibration and harshness (NVH) basic requirements and targets
Trang 1114./
14.8 Future trends References
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