Modeling of wear factor of locomotive wheel flange taking into account the traction conditions

Abstract

Since the advent of railways for nowadays the problem of wear of wheel flange isn’t completely solved. It is especially relevant on the main railways. In this paper the mathematical model is proposed for impact assessment of traction conditions on the wear of the flanges of locomotive wheels during the movement of the rail track. It was obtained on the basis of the kinematic scheme of interaction of the wheel with the rail. As a factor of wear was taken the work of friction forces per unit distance traveled. It is well known, the wear factor of the flange is directly proportional to the relative sliding, which depends on the traction conditions and can be determined by the value of the relative sliding surface of the guide wheel and the geometric parameters of the curve. Thus the model that relates the wear factor to the parameters of the kinematic scheme of interaction of the wheel with the rail and allows to take into account a traction conditions was obtained. The proposed model allows to improve the modeling of the interaction of track and rolling stock as well as the design process of devices that reduce the intensity of wear of the flanges and rails. LOCOMOTIVE, FLANGE, WEAR-OUT FACTOR, TRACTION CONDITIONS, RELATIVE SLIDING, SLIPPAGE, MATHEMATICAL MODEL