A study on the Critical speed of Korean Tilting Train Hanbit200

한국형 틸팅열차 한빛200의 임계속도에 관한 연구

  • 김남포 (한국철도기술연구원, 기존철도기술개발사업단) ;
  • 김정석 (한국철도기술연구원, 기존철도기술개발사업단) ;
  • 박태원 (아주대학교)
  • Published : 2007.06.30

Abstract

The critical speed above which the vehicle become unstable is one of the items that should be verified in the development of a new train. In the case of a high speed tilting train, which requires both higher critical speed and higher curving speed, the critical speed should be more carefully treated because the both requirements are in conflict with each other in the conventional train design. The main purpose of the present work is to estimate the linear and non-linear critical speeds of 200km/h Korean Tilting Train 'Hanbit200' under development. The newly developed self-steering mechanism was attached to the tilting train to ensure that the critical speed falls under the lower yaw stiffness which is needed to secure higher curving performance. The simulation for predicting the critical speed was done by a commercially available vehicle dynamics software. A full scale roller rig test was carried out to validate the numerical results and to verify the effectiveness of the self-steering mechanism.

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