Wheel wear analysis of motor and unpowered car of a high-speed train

Zhiwei Wang, Ruichen Wang, David Crosbee, Paul Allen, Yunguang Ye, Weihua Zhang

Research output: Contribution to journalArticle

Abstract

The wheel-wear characteristics of the motor and unpowered car of a high-speed train were investigated, for the first time, by a wheel-wear prediction model comprising a wheel-wear sub-model, an unpowered car dynamics sub-model, and a novel motor-car dynamics sub-model. The motor-car dynamics model considers the detailed structural characteristics and working mechanics of the traction transmission system. Assuming the real track parameters and track irregularities, it handles the nonlinear factors such as the traction characteristics, gear backlash, time-varying mesh stiffness, gear friction and wheel–rail contact. This study assessed the wheel-wear characteristics of a high-speed train by suitable performance indices (wheel-wear depth and contact patch energy). Finally, the model was validated by comparing the simulation results with those of field tests. The predicted and measured wheel wear were in good agreement. Both the wheel wear depth and contact energy were higher for the motor car than the unpowered car, because the traction torque on the wheelsets of the motor car increased the longitudinal creepage. During one re-profiling cycle, the transmission stability of the gear transmission system worsened with continuous wheel-wear. Furthermore, the proposed methods can assess the wheel wear and working status of the traction transmission system in the vehicle vibration environment of any rail vehicle.
Original languageEnglish
Article number203136
JournalWear
Early online date19 Nov 2019
DOIs
Publication statusE-pub ahead of print - 19 Nov 2019

Fingerprint

wheels
Wheels
Railroad cars
high speed
Wear of materials
traction
Traction (friction)
Gears
vehicles
field tests
rails
irregularities
dynamic models
Rails
torque
mesh
Dynamic models
stiffness
Mechanics
friction

Cite this

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title = "Wheel wear analysis of motor and unpowered car of a high-speed train",
abstract = "The wheel-wear characteristics of the motor and unpowered car of a high-speed train were investigated, for the first time, by a wheel-wear prediction model comprising a wheel-wear sub-model, an unpowered car dynamics sub-model, and a novel motor-car dynamics sub-model. The motor-car dynamics model considers the detailed structural characteristics and working mechanics of the traction transmission system. Assuming the real track parameters and track irregularities, it handles the nonlinear factors such as the traction characteristics, gear backlash, time-varying mesh stiffness, gear friction and wheel–rail contact. This study assessed the wheel-wear characteristics of a high-speed train by suitable performance indices (wheel-wear depth and contact patch energy). Finally, the model was validated by comparing the simulation results with those of field tests. The predicted and measured wheel wear were in good agreement. Both the wheel wear depth and contact energy were higher for the motor car than the unpowered car, because the traction torque on the wheelsets of the motor car increased the longitudinal creepage. During one re-profiling cycle, the transmission stability of the gear transmission system worsened with continuous wheel-wear. Furthermore, the proposed methods can assess the wheel wear and working status of the traction transmission system in the vehicle vibration environment of any rail vehicle.",
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language = "English",
journal = "Wear",
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Wheel wear analysis of motor and unpowered car of a high-speed train. / Wang, Zhiwei; Wang, Ruichen; Crosbee, David; Allen, Paul; Ye, Yunguang; Zhang, Weihua.

In: Wear, 19.11.2019.

Research output: Contribution to journalArticle

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AU - Wang, Ruichen

AU - Crosbee, David

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AU - Zhang, Weihua

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