Railway Noise and Vibration

Mechanisms, Modelling and Means of Control

2nd Edition - February 23, 2024
Author: David Thompson
Language: English
Paperback ISBN:
9 7 8 - 0 - 1 2 - 8 2 1 9 7 9 - 9
eBook ISBN:
9 7 8 - 0 - 1 2 - 4 1 0 4 8 9 - 1

Railway Noise and Vibration: Mechanisms, Modelling, and Means of Control, 2nd Edition provides a complete overview of the state of the art in rail noise and vibration theory and mo… Read more

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Railway Noise and Vibration: Mechanisms, Modelling, and Means of Control, 2nd Edition provides a complete overview of the state of the art in rail noise and vibration theory and modelling.

This book describes each source of noise and vibration, such as rolling noise, curve squeal, bridge noise, aerodynamic noise, ground vibration and ground-borne noise, and vehicle interior noise in a systematic way, covering relevant theoretical modelling approaches and their practical implementation, with extensive examples of noise control technology applied at source.

Noise and vibration are key obstacles to further development of railway networks worldwide for high-speed intercity traffic, freight and suburban metros and light-rail systems. With noise problems all too often dealt with inefficiently due to a lack of understanding of the problem, this new edition is an invaluable reference for all those working with noise and vibration from railways, whether in industry, consultancy, or academic research.

Cover image
Title page
Table of Contents
Copyright
Preface
Acknowledgments
1. Introduction
Abstract
1.1 The need for noise and vibration control in railways
1.2 The need for a systematic approach to noise control
1.3 Sources of railway noise and vibration
1.4 Structure of the book
References
2. Introduction to rolling noise
Abstract
2.1 The cause of rolling noise
2.2 Speed and roughness dependence
2.3 Frequency content
2.4 Is it the wheel or is it the rail?
2.5 Overview of the generation mechanism
References
Chapter 3. Track vibration
Abstract
3.1 Introduction
3.2 Euler–Bernoulli beam on continuous support
3.3 Euler–Bernoulli beam on continuous two-layer support
3.4 Timoshenko beam on continuous two-layer support
3.5 Discretely supported track models
3.6 Lateral and longitudinal vibration
3.7 Rail cross-section deformation
3.8 Beam model for sleeper vibration
3.9 Rail pad stiffness
References
4. Wheel vibration
Abstract
4.1 Introduction
4.2 Wheel modes of vibration
4.3 Frequency response
4.4 Simple models for wheel mobility
4.5 Effects of wheel rotation
4.6 Experimental results
4.7 Noise from bogie and vehicle superstructure
References
5. Wheel/rail interaction and excitation by roughness
Abstract
5.1 Introduction
5.2 Wheel/rail interaction model
5.3 Contact zone mobilities
5.4 Contact filter effect
5.5 Measurement of roughness
5.6 Processing of roughness data
5.7 Other excitation mechanisms
References
Chapter 6. Sound radiation from wheels and track
Abstract
6.1 Introduction
6.2 Simple models for sound radiation
6.3 Wheel radiation
6.4 Rail radiation
6.5 Sleeper radiation
6.6 Sound pressure levels during train passage
6.7 Validation measurements
References
Chapter 7. Mitigation measures for rolling noise
Abstract
7.1 Introduction
7.2 Reduction of roughness
7.3 Wheel shape and damping
7.4 Track response and radiation
7.5 Shielding measures
7.6 Combinations of measures
References
8. Aerodynamic noise
Abstract
8.1 Introduction
8.2 Fundamental principles
8.3 Field measurements
8.4 Wind tunnel testing
8.5 Numerical techniques
8.6 Semiempirical modelling
8.7 Pantograph noise
8.8 Bogie region
8.9 Other sources
8.10 Concluding remarks
References
9. Curve squeal noise
Abstract
9.1 Introduction
9.2 Field measurements of curve squeal noise
9.3 Curving behaviour
9.4 Creep forces
9.5 Models for frictional excitation
9.6 Numerical models for squeal
9.7 Control measures for curve squeal noise
9.8 Case study: UK Sprinter fleet
References
Chapter 10. Impact noise
Abstract
10.1 Introduction
10.2 The effect of contact spring nonlinearities on rolling noise
10.3 Impact noise due to wheel flats
10.4 Impact noise due to rail joints
10.5 Switches and crossings
10.6 Discussion
References
11. Bridge noise
Abstract
11.1 Introduction
11.2 Excitation mechanisms
11.3 Excitation of bridge vibration
11.4 Vibration transmission and radiation of sound
11.5 Concrete viaducts
11.6 Reducing bridge noise
11.7 Case studies
References
Chapter 12. Low-frequency ground vibration
Abstract
12.1 Introduction
12.2 Assessment of vibration
12.3 Prediction methods
12.4 Wave propagation in the soil
12.5 Excitation mechanisms
12.6 Mitigation of vibration
12.7 Concluding remarks
References
Chapter 13. Ground-borne noise
Abstract
13.1 Introduction
13.2 Assessment criteria
13.3 Excitation mechanisms
13.4 Prediction methods
13.5 Vibration propagation from a tunnel
13.6 Transmission in buildings
13.7 Mitigation of ground-borne noise—resilient track forms
13.8 Other means of mitigating ground-borne noise
13.9 Concluding remarks
References
Chapter 14. Vehicle interior noise
Abstract
14.1 Introduction
14.2 Characterising interior noise
14.3 Sources of interior noise
14.4 Airborne transmission
14.5 Structure-borne transmission
14.6 Prediction of interior noise
References
Appendix A. Measurement of train pass-by noise and track decay rate
A.1 Measurement quantities
A.2 Measurement standards
A.3 Technical specifications for interoperability noise
A.4 Rail roughness limits
A.5 Track decay rates
Appendix B. Short glossary of railway terminology
Appendix C. List of symbols
Subscripts
Abbreviations
Index

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