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Wheel-Rail Contact Analysis Considering Axle Deformation Using a One-Dimensional Beam Element

1차원 빔요소를 활용한 차축 변형고려 차륜-레일 접촉해석

  • Choi, Ha-Young (Dept. of Mechanical Engineering, Dongyang Mirae UNIV.) ;
  • Lee, Dong-Hyung (Fatigue and Fracture Research Team, Korea Railroad Research Institute) ;
  • Kwon, Seok-Jin (Fatigue and Fracture Research Team, Korea Railroad Research Institute) ;
  • Seo, Jeong-Won (Fatigue and Fracture Research Team, Korea Railroad Research Institute)
  • 최하영 (동양미래대학교 기계공학부) ;
  • 이동형 (한국철도기술연구원 피로손상연구팀) ;
  • 권석진 (한국철도기술연구원 피로손상연구팀) ;
  • 서정원 (한국철도기술연구원 피로손상연구팀)
  • Received : 2017.11.10
  • Accepted : 2017.11.19
  • Published : 2017.12.31

Abstract

It is necessary to analyze the exact contact position and contact stress of the wheel-rail in order to predict damage to the wheel and rail. This study presents a wheel-rail contact analysis model that considers the deformation of the axle. When a wheel-rail contact analysis is performed using a full three-dimensional model of the wheelset and rail, the analytical model becomes very inefficient due to the increase in analysis time and cost. Therefore, modeling the element-coupling model of the wheel and rail as a three-dimensional element and the axle as a one-dimensional element is proposed. The wheel-rail contact characteristics in the proposed analysis model for straight and curved lines were analyzed and compared with the conventional three-dimensional analysis model. Considering the accuracy of the analysis results and time, the result shows that the proposed analytical model has almost the same accuracy as a full three-dimensional model, but the computational effort is significantly reduced.

Keywords

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