지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Wheel-set vibration is the basic source of railway vehicles and is transmitted to bogie and carbody through the first and second suspension systems. The vibration source mostly comes from the contact between wheel and rail and is limited by the flange of wheel. The wheel/rail contact makes the creep phenomenon depending on the shape of wheel and rail. In this paper, the lateral and yawing motion of a wheel-set are calculated for the various creep curves made by Kalker’s linear creep theory, Vermulen’s theory, Polach’s simulation, and the strip theory. The results show that Kalker’s linear theory can predict the critical speed by stability analysis, and the other nonlinear creep curves reveals a limit cycle. In order to consider the shape of wheel and rail, the creep curve for the wheel of KTX and HEMU with 1/20 and 1/40 conicity was calculated by the strip theory, devised as a computer code.. The result shows that 1/40 conicity wheel can have higher running speed than 1/20 conicity wheel. Also, the flange effect on the wheel-set vibration is simulated, which results in a hunting phenomenon with high frequency.
목차
Abstract
1. INTRODUCTION
2. Wheel-set model
3. Creep curve
4. Wheel-set Vibration
5. Conclusions
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2016-326-001057629