틸팅차량용 차륜의 구조 강도 및 동적 성능 해석

For the improvement of a conventional railway speed, tilting train(Tilting Train eXpress) is under the development aiming for a maximum speed 180㎞/h. Compared to the existing conventional rolling-stock, tilting train could take an advantage of speed improvement about 20-30％ on curve sections due to the improvement of curving performance. However, this speed increasement creates a severe load at wheels, thus it is necessary to study the safety of wheel for tilting train preferentially. On the other hand, it is under consideration that the wheel for conventional railway rolling-stock at speeds of 150km/h will be applied to tilting train at speeds of 180㎞/h. In this paper, we have studied the strength of wheel structure, the geometrical contact characteristics, and the dynamic performance of wheel to evaluate the safety of wheel for tilting train.