
READ ME File For 'Data supporting the article: Effects of rotation on the rolling noise radiated by wheelsets in high-speed railways'

Dataset DOI: https://doi.org/10.5258/SOTON/D2867 

Date that the file was created: November, 2023

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GENERAL INFORMATION
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ReadMe Author: Christopher Knuth, University of Southampton

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SHARING/ACCESS INFORMATION
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Licenses/restrictions placed on the data, or limitations of reuse: CC BY

Recommended citation for the data:

This dataset supports the publication:
AUTHORS: Christopher Knuth, Giacomo Squicciarini, David Thompson, Luis Baeza
TITLE: Effects of rotation on the rolling noise radiated by wheelsets in high-speed railways
JOURNAL: Journal of Sound and Vibration
PAPER DOI: https://doi.org/10.1016/j.jsv.2023.118180

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DATA & FILE OVERVIEW
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This dataset contains the numerical data used to produce the Figures 2-12 of the publication, some of which are divided into sub-figures from (a)-(c). 
-It is separated into 15 Microsoft Excel files (.xls), one for each sub-figure.
-The x- and y- data are stored as a matrix in the sheet, where the first column always corresponds to the x-data and the remaining to the y-data of the individual lines shown in the figure. 
-A description is available in each sheet, that refers the data to the corresponding line in the figure.
-In Figure_5.xls three sheets are used because of the length of the data, where sheet 1 corresponds to frequencies from 10-3340 Hz, sheet 2 to 3340.1-6670 Hz, and sheet 3 to 6670.1-10000 Hz.


In the ZIP file the data is organised as follows:
- Figure_2a.xls
- Figure_2b.xls
- Figure_2c.xls
- Figure_3.xls
- Figure_4a.xls
- Figure_4b.xls
- Figure_5.xls
- Figure_6.xls
- Figure_7a.xls
- Figure_7b.xls
- Figure_8a.xls
- Figure_8b.xls
- Figure_9xls
- Figure_10.xls
- Figure_11a.xls
- Figure_11b.xls
- Figure_12.xls

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METHODOLOGICAL INFORMATION
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Description of methods used for collection/generation of data: The data was generated from numerical rolling noise simulations in MATLAB

Methods for processing the data: The simulatiions were carried out by comining the rotating wheelset model developed in this paper with the Track Wheel Interaction Noise Software (TWINS).

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DATA-SPECIFIC INFORMATION 
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1) Figure_2a.xls: Frequency separation of radial railway wheel waves over speed due to inertial gyroscopic/centrifugal effecta
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega, Hz
	row 4-13 - y-data: Frequency shift of the rotating radial waves 1-10, Hz
2) Figure_2b.xls: Frequency separation of circumferential railway wheel waves over speed due to inertial gyroscopic/centrifugal effecta
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega, Hz
	row 3-13 - y-data: Frequency shift of the rotating circumferential waves 1-10, Hz
3) Figure_2c.xls: Frequency separation of axial railway wheel waves over speed due to inertial gyroscopic/centrifugal effects
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega
	row 4-33 - y-data: Frequency shift of the rotating axial waves 1-30, Hz

4) Figure_3.xls: Frequency separation of radial/circumferential/axial railway wheel waves over speed due to stress stiffening and spin softening
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega, Hz
	row 4-28 - y-data: Frequency shift of the rotating radial/circumferential/axial waves 1-25, Hz

5) Figure_4a.xls: Frequency separation of railway wheelset waves over speed for n=0
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega, Hz
	row 4-23 - y-data: Frequency separation of the rotating waves 1-20, Hz
6) Figure_4b.xls: Frequency separation of railway wheelset waves over speed for n=+/-1
	row 1 - x-data: Train speed, km/h
	row 2-3 - y-data: Maximum frequency shift due to gyroscopic effects +/-Omega, Hz
	row 3-23 - y-data: Frequency separation of the rotating waves 1-20, Hz

7) Figure_5.xls: Vertical contact mobilities of the rail, wheelset and track used in interaction
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Magnitude of mobility of the rail, m/Ns
	row 3 - y-data: Magnitude of mobility of the wheelset, m/Ns
	row 4 - y-data: Magnitude of mobility of the contact, m/Ns

8) Figure_6.xls: Comparison of Sound Power Level (SWL) of the rotating (Eulerian) and non-rotating wheel for different speeds
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: SWL of the wheel at a speed of 350 km/h rotating (Eulerian), dB re 1 pW
	row 3 - y-data: SWL of the wheel at a speed of 350 km/h non-rotating, dB re 1 pW
	row 4 - y-data: SWL of the wheel at a speed of 160 km/h rotating (Eulerian), dB re 1 pW
	row 5 - y-data: SWL of the wheel at a speed of 160 km/h non-rotating, dB re 1 pW
	row 6 - y-data: SWL of the wheel at a speed of 80 km/h rotating (Eulerian), dB re 1 pW
	row 7 - y-data: SWL of the wheel at a speed of 80 km/h non-rotating, dB re 1 pW

9) Figure_7a.xls: Difference in SWL of the wheel using the rotating and non-rotating models for different speeds
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Difference SWL of the wheel (rotating (Eulerian)/non-rotating) at a speed of 500 km/h, dB re 1 pW
	row 3 - y-data: Difference SWL of the wheel (rotating (Eulerian)/non-rotating) at a speed of 350 km/h, dB re 1 pW
	row 4 - y-data: Difference SWL of the wheel (rotating (Eulerian)/non-rotating) at a speed of 160 km/h, dB re 1 pW
	row 5 - y-data: Difference SWL of the wheel (rotating (Eulerian)/non-rotating) at a speed of 80 km/h, dB re 1 pW
10) Figure_7b.xls: Difference in SWL of the wheel using the rotating and moving load models for different speeds
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Difference SWL of the wheel (rotating (Eulerian)/moving load) at a speed of 500 km/h, dB re 1 pW
	row 3 - y-data: Difference SWL of the wheel (rotating (Eulerian)/moving load) at a speed of 350 km/h, dB re 1 pW
	row 4 - y-data: Difference SWL of the wheel (rotating (Eulerian)/moving load) at a speed of 160 km/h, dB re 1 pW
	row 5 - y-data: Difference SWL of the wheel (rotating (Eulerian)/moving load) at a speed of 80 km/h, dB re 1 pW

11) Figure_8a.xls: Difference in overall A-weighted SWL for different models to account for the rotation (straight web wheel)
	row 1 - x-data: Train speed, km/h
	row 2 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/Eulerian with stress-stiffening), dB
	row 3 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/moving load), dB
	row 4 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/non-rotating), dB
12) Figure_8b.xls: Difference in overall A-weighted SWL for different models to account for the rotation curved web wheel)
	row 1 - x-data: Train speed, km/h
	row 2 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/Eulerian with stress-stiffening), dB
	row 3 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/moving load), dB
	row 4 - y-data: Difference overall A-weighted SWL of the wheel (rotating (Eulerian)/non-rotating), dB

13) Figure_9.xls: Comparison of SWL of the full wheelset with the constrained wheel model for different speeds
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: SWL of the wheelset at a speed of 350 km/h rotating (Eulerian), dB re 1 pW
	row 3 - y-data: SWL of the wheel at a speed of 350 km/h rotating (Eulerian), dB re 1 pW
	row 4 - y-data: SWL of the wheelset at a speed of 160 km/h rotating (Eulerian), dB re 1 pW
	row 5 - y-data: SWL of the wheel at a speed of 160 km/h rotating (Eulerian), dB re 1 pW
	row 6 - y-data: SWL of the wheelset at a speed of 80 km/h rotating (Eulerian), dB re 1 pW
	row 7 - y-data: SWL of the wheel at a speed of 80 km/h rotating (Eulerian), dB re 1 pW

14) Figure_10.xls: Difference in overall A-weighted SWL of the full wheelset with the constrained wheel model
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Difference overall A-weighted SWL, dB

15) Figure_11a.xls: Comparison of the wheel velocity in radial and axial direction in the inertial and non-inertial frame of reference at 80 km/h
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Velocity of the wheel (radial) in the non-inertial frame, dB re 1 nm/s
	row 3 - y-data: Velocity of the wheel (axial) in the non-inertial frame, dB re 1 nm/s
	row 4 - y-data: Velocity of the wheel (radial) in the inertial frame, dB re 1 nm/s
	row 5 - y-data: Velocity of the wheel (axial) in the inertial frame, dB re 1 nm/s
16) Figure_11b.xls: Comparison of the wheel velocity in radial and axial direction in the inertial and non-inertial frame of reference at 80 km/h
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Velocity of the wheel (radial) in the non-inertial frame, dB re 1 nm/s
	row 3 - y-data: Velocity of the wheel (axial) in the non-inertial frame, dB re 1 nm/s
	row 4 - y-data: Velocity of the wheel (radial) in the inertial frame, dB re 1 nm/s
	row 5 - y-data: Velocity of the wheel (axial) in the inertial frame, dB re 1 nm/s

17) Figure_12.xls: Difference in overall A-weighted SWL obtained in the inertial and non-inertial frame
	row 1 - x-data: Frequency, Hz
	row 2 - y-data: Difference overall A-weighted SWL, dB