As high-speed trains operate on both high-speed and conventional lines, wheel-rail interface characteristics have become increasingly important for effective wheel-rail wear management and operational safety. This study compared and analyzed interface characteristics for various combinations of wheels used in high-speed vehicles with various rail configurations, including UIC, KS50, and KS60, to determine the optimal combination. The results were calculated and analyzed for rolling radius differences, equivalent conicity, and wheel-rail contact area characteristics in response to lateral axle displacement. Changes in equivalent conicity and wheel-rail contact area as wear progressed were also analyzed.

Abstract
1. 서 론
2. 접촉파라미터 계산
    2.1 차륜과 레일의 형상
    2.2 구름 반경차이와 등가답면 구배
3. 접촉파라미터 계산 결과
    3.1 윤축의 횡변위에 따른 구름 반경차이 계산
    3.2 윤축의 횡변위에 대한 차륜과 레일의 접촉시 접촉면 적의 변화
4. 결 론
References

• 강부병(Dept. of Railway Vehicle System Engineering, Woosong University) | Bu-Byoung Kang Corresponding author