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Optimization of Characteristics of Longitudinal Creepage for Running Stability on Sharp Curved Track

급곡선 주행 안정화를 위한 주행방향 크리피지 특성 최적화 연구

  • Sim, Kyung-Seok (Department of Mechanical Engineering, Ajou University) ;
  • Park, Tae-Won (Department of Mechanical Engineering, Ajou University) ;
  • Lee, Jin-Hee (Department of Mechanical Engineering, Ajou University) ;
  • Kim, Nam-Po (Korea Railroad Research Institute)
  • Received : 2013.07.14
  • Accepted : 2014.01.13
  • Published : 2014.02.28

Abstract

Urban railway vehicles operate in downtown areas. Due to increases in the number of passengers and changes in the service plans, railway vehicles are expected to operate on sharp curved tracks. However, on these tracks, the running stability of the railway vehicles is significantly decreased and the creepage is increased. Creepage causes the wheel/rail to wear and vibration. Therefore, reducing the creepage helps ensure the running stability and can be beneficial for the environment and cost. In this paper, the longitudinal creepage is analyzed using a railway vehicle model on a sharp curved track. Furthermore, in order to minimize the problems when a railway vehicle runs on a sharp curved track, the characteristics of a bogie are optimized using response optimization.

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