Vertical Behaviour in Track Dynamics due to Rail Corrugations
Makoto ISHIDA , Shigeru MIURA , Koichiro MATSUO
Considering the current status of an increasing train speed, it is very imoprtant to understand track dynamics from the aspects of maintaining the good quality of track, i.e., preventing the deterioration and/ or fracture of track components and the influence of track dynamics on noise and ground vibration. Using the analytical track model the authors established, dynamic responses between track and vehicle caused by trains running on rail corrugations were analysed. As a result, the differences between the track dynamic responses, -i.e. dynamic forces interacting between rail and wheel, rail base bending stresses, rail vibration velocity, rail pad force and so forth-of three typical types of rail corrugations which take place on ineer rail and outer rail on sharp curves, and tangent track in Japan have been made clear.