TY - JOUR
T1 - Towards the understanding of wheel-rail flange squeal
T2 - In-situ experiment and genuine 3D profile-enhanced transient modelling
AU - Luo, Yun Ke
AU - Zhou, Lu
AU - Ni, Yi Qing
N1 - Funding Information:
This research was funded by a grant (RIF) from the Research Grants Council of the Hong Kong Special Administrative Region, China, grant number R5020-18. This research was also funded by grants from the Ministry of Science and Technology of China and the Innovation and Technology Commission of Hong Kong SAR Government to the Hong Kong Branch of Chinese National Rail Transit Electrification and Automation Engineering Technology Research Center, grant number K-BBY1.
Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Yi-Qing Ni reports financial support was provided by Research Grants Council of the Hong Kong Special Administrative Region. Yi-Qing Ni reports financial support was provided by Innovation and Technology Commission of Hong Kong SAR Government.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11/15
Y1 - 2022/11/15
N2 - Wheel-rail squeal noise during train turning has been a tricky problem influencing passengers and nearby residents. The tonal curve squeal that mainly occurs at the inner rail has been extensively studied, while the broadband flange squeal that takes place at the outer rail that can be equally annoying is seldom mentioned and hardly investigated. This paper presents a study aiming at understanding the mechanism of wheel-rail flange squeal from phenomenon to the underlying source. The study systematically demonstrates the connection between the observed wheel-rail flange squeal noise and contact force, with measurements taken from a series of well-controlled in-situ experiments on an operating metro line, and numerical simulations. An integrated transient model consisting of three submodels on train dynamics, rail dynamics, and wheel-rail contact incorporating genuine 3D surface irregularities is developed specifically for flange squeal analysis. The developed model can reproduce the characteristics of flange squeal and correlates wheel-rail contact force with the flange squeal noise with satisfactory performance. Features of flange squeal under four-speed levels corresponding to in-situ experiments are reappeared from global dynamics to local contact status. An explanation of the generation mechanism of flange squeal is proposed by measurement observation and confirmed through the proposed model with multiple influencing key factors, including train speed, contact position, shape of contact patch, contact creepages, and wheel and rail irregularities. The present study is expected to establish a footstone for the mechanism comprehension of flange squeal and inspire further research in this area.
AB - Wheel-rail squeal noise during train turning has been a tricky problem influencing passengers and nearby residents. The tonal curve squeal that mainly occurs at the inner rail has been extensively studied, while the broadband flange squeal that takes place at the outer rail that can be equally annoying is seldom mentioned and hardly investigated. This paper presents a study aiming at understanding the mechanism of wheel-rail flange squeal from phenomenon to the underlying source. The study systematically demonstrates the connection between the observed wheel-rail flange squeal noise and contact force, with measurements taken from a series of well-controlled in-situ experiments on an operating metro line, and numerical simulations. An integrated transient model consisting of three submodels on train dynamics, rail dynamics, and wheel-rail contact incorporating genuine 3D surface irregularities is developed specifically for flange squeal analysis. The developed model can reproduce the characteristics of flange squeal and correlates wheel-rail contact force with the flange squeal noise with satisfactory performance. Features of flange squeal under four-speed levels corresponding to in-situ experiments are reappeared from global dynamics to local contact status. An explanation of the generation mechanism of flange squeal is proposed by measurement observation and confirmed through the proposed model with multiple influencing key factors, including train speed, contact position, shape of contact patch, contact creepages, and wheel and rail irregularities. The present study is expected to establish a footstone for the mechanism comprehension of flange squeal and inspire further research in this area.
KW - Coupled dynamic modelling
KW - In-situ experiment
KW - Three-dimensional surface irregularities
KW - Transient modelling
KW - Wheel-rail contact
KW - Wheel-rail flange squeal
UR - http://www.scopus.com/inward/record.url?scp=85132689304&partnerID=8YFLogxK
U2 - 10.1016/j.ymssp.2022.109455
DO - 10.1016/j.ymssp.2022.109455
M3 - Journal article
AN - SCOPUS:85132689304
SN - 0888-3270
VL - 180
JO - Mechanical Systems and Signal Processing
JF - Mechanical Systems and Signal Processing
M1 - 109455
ER -