한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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- Pages.2115-2124
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- 2011
구름접촉피로시험을 통한 고속철도 레일연마량 분석
Analysis for Optimal Rail Grinding Amount by Rolling Contact Fatigue Test in High Speed Railway
초록
The rail surface defects which are generated on repeated rolling contact fatigue are getting increased according to high speed, high density, and minimum weight. In addition, Increasing noise and vibration are affected by these also impact load generated as well. Because of this phenomenon, more serious and critical damages were occurred. In fact, in order to control them, the rail grinding were conducted. However, there are not enough researches to make an criteria of generating optimal rail grinding amount in Korea. This study evaluated how depth of hardening on rail surface is formed and suggested optimal rail grinding amount by RCF(rolling contact fatigue) test with generated contact pressure between KTX wheel and UIC60 rail by applying FEM analysis. Therefore, the amount was generated approximately 0.2mm/20MGT to maintain integrity of rail surface by getting rid of depth of hardening on rail according to rail accumulated passing tonnage.
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