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Effects of wheel–rail contact modelling on wheel wear simulation.pdf
Wear 366-367 (2016) 146–156
Contents lists available at ScienceDirect
Wear
journal homepage: /locate/wear
Effects of wheel–rail contact modelling on wheel wear simulation
Gongquan Tao, Zefeng Wen n, Xin Zhao, Xuesong Jin
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
article info
Article history: Received 4 October 2015 Received in revised form 4 May 2016 Accepted 11 May 2016 Available online 24 May 2016
Keywords: Wheel–rail contact Non-elliptic contact Wheel wear Railway vehicle
abstract
Three non-elliptic contact models, namely Kik–Piotrowski method, STRIPES and ANALYN, are ?rst compared to the Hertz theory and the CONTACT code in terms of the normal contact solution. Further, for the contact models except for CONTACT, the tangential contact solutions are calculated by a modi?ed simpli?ed theory of Kalker (FASTSIM) based on the normal ones to compare with that of CONTACT. Afterwards, a wheel wear prediction model, consisting of a multi-body dynamic model of the railway vehicle, a wheel–rail contact model and a wear function developed by the University of Shef?eld, is developed. The in?uences of the ?ve contact models mentioned above on the wheel wear prediction are investigated from viewpoints of calculation ef?ciency and accuracy. The results indicate that using Hertz theory and FASTSIM to solve the normal and tangential contact problem, respectively, in the wheel wear simulation is a good choice in order to consider a compromise between the calculation ef?ciency and accuracy.
2016 Elsevier B.V. All rights reserved.
1. Introduction
The railway, as an eco-friendly and energy-ef?cient mode of transportation, has attracted more and more attentions in recent years. To meet the higher requirements of the modern railway, especially of the high speed and heavy haul trains, wear of the wheel–rail contact pair has to be understood better in theory and well controlled in practice. It has been well recognized by train operators
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