한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2005년도 추계학술대회 논문집
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- Pages.1109-1114
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- 2005
한국형 고속철도 차량의 차륜의 구름접촉 피로 예측
The Prediction of Rolling Contact Fatigue of Wheels for a Korea High Speed Train
초록
The rolling contact fatigue of wheels for high speed trains is a matter of increasing importance. The wheel damages from fatigue crack makes noise up and safety down. RCF-casued accidents cause traffic congestion and economical costs as well as personal injuries. In this study, we examine the rolling contact fatigue of wheels for power car running at 300km/h. Using the results of multi-body dynamic analysis and the proposed procedure of Ekberg, we calculate the fatigue index of surface-initiated fatigue, subsurface-initiated fatigue and fatigue initiated at deep material defects. As a result. the fatigue index shows us whether fatigue will appear and in which form. In addition, we present Shakedown map on surface-initiated fatigue.
키워드