A Proposal of Wheel/Rail Contact Model for Friction Control

• Published in: Journal of mechanical science and technology Vol. 19; no. 1; pp. 437 - 443
• Main Authors: Matsumoto Kosuke, Suda Yoshihiro, Komine Hisanao, Nakai Takuji, Tomeoka Masao, Shimizu Kunihito, Tanimoto Masuhisa, Kishimoto Yasushi, Fujii Takashi
• Format: Journal Article
• Language: Korean
• Published: 대한기계학회 2005
• Subjects: 기계공학; Railway; Friction; Creep; Contact
• ISSN: 1738-494X; 1976-3824

Controlling the friction between wheel and rail is direct and very effective measures to improve the curving performances of railway trucks, because the curving performances depend much on friction characteristics. Authors have proposed a method, 'friction control', which utilizes friction modifier ($KELTRACK^{TM}$ HPF) with onboard spraying system. With the method, not only friction coefficient, but also friction characteristics can be controlled as expected. In this study, MBD simulation is very valuable tool to foresee the effect of the control in advance of experiment with real car. And the creep characteristics of wheel/rail contact with the friction modifier takes very important role in the simulation. In this paper, authors propose a theoretical model of wheel/rail contact condition considering the creep characteristics of friction modifier, which is derived the application of principle tribological theories.