DYNAMIC BEHAVIOR OF KOREAN TILTING TRAIN(TTX) ON CURVED TRACK

초록

Speed-up project for the conventional line is being accomplished in Korea. The tilting train is adapted to the project. Because there are a lot of curved lines in the existing lane in Korea, it is expected that the effective improvement in speed would be achieved by the tilting train. Tilting train suitable for Korean railroad is being developed by KRRI(Korea Railroad Research Institute), although several tilting systems are under the operation in other countries. The Korean tilting train has active tilting system and self-steering wheel differently from existing trains. Especially the center of mass of the car body is moved according to curvature. These characteristics have an effect on the dynamic response of the track with the change on the speed and the load distribution of the train. As a result the maintenance regime of the track should be updated for the operation of the tilting train. Since the Korean tilting train is being manufactured now, experimental test data cannot be captured under the real situation. Therefore the dynamic behavior of the Korean tilting train is estimated numerically with commercial software. The main issue of this paper is to compare changes in lateral force in cases which irregularity is not exist on the track and the real irregularity is injected to the curved track."