고속철도 레일의 피로수명에 영향을 미치는 매개변수분석

The Parameter Analysis effecting on the Fatigue Life of Rail on High Speed Railway

  • 성덕룡 (서울산업대학교 철도전문대학원 철도건설공학과) ;
  • 전희광 (서울산업대학교 철도전문대학원 철도건설공학과, 한국철도시설공단 건설본부 건설계획팀) ;
  • 박용걸 (서울산업대학교 철도전문대학원) ;
  • 양신추 (한국철도기술연구원 철도시스템연구센터 차륜궤도연구실)
  • 발행 : 2008.11.13

초록

In a domestic, HSR-350x which has the maximum speed 350km/h was developed and then next, the next generation high speed train which has the maximum speed 400km/h has still been developing. With developing the next generation high speed railway, there need to be a general plan to make sure of dynamic safety though the a study on the crack and failure of rail by rolling contact fatigue. Therefore, this study investigated occurring stress of rail according to the track quality, train velocity, wheel radius, track stiffness, distance between sleepers, axial force using Eisenmann's equations. For the more, via the finite element method, it investigated shear force on the rail head which could be changed by the early crack length, angle and temperature. As a result, this study confirmed the main elements which effect on the fatigue life cycle of rail.

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