한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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- Pages.2135-2146
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- 2011
도시철도에서 열차제동하중이 레일표면 열화에 미치는 영향
An Effect on Braking Force for Degradation of Rail Surface in the Urban Railway
초록
The rail surface irregularity is generated severely by train braking effect in the section of station. The braking force increases slip rate and friction factors caused by wheel-rail contact points. It brings rail surface irregularity as well. In this study, interactions between wheel and rail were investigated using rolling contact fatigue theory and mechanism of rail degradation through fracture mechanics. For the more, the Von-Mises stress occurred on the rail due to the interaction between wheel and rail was analyzed using 3-D finite element method. The amounts of surface irregularity of rail were measured according to accumulated passing tonnage in urban railway in fields. Therefore, the maintenance of rail should be separated by running and braking sections to prevent RCF defects.
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