Abstract
The coefficient of friction between the rails and the wheels is important in railway vehicle dynamics analysis. In general, the coefficient of friction is reduced by the water film between wheel and rail in the rain. The friction coefficient is known to be higher in the back side wheel, too. High speed railway vehicle such as SHINKANSEN are using this phenomenon, i.e., brake distribution of the front car is low, brake distribution of the behind cars are high. The monographic train with lightweight vehicle necessary to consider the influence of the friction coefficient carefully because the technique is not useful. In this study, the state measurement experiments including liquid film measurement around wheel and rail is performed using a scale model running test experimental appurtenances.
