전동차용 중공차축 설계에 대한 해석적 연구

초록

Lightweight railway axle provides not only reducing weight of vehicle but also smaller unsprung mass. It has been demonstrated that low unsprung mass achieve enhanced noise and vibration performance of railway vehicle. The purpose of present study, as a part of lightweight axle design research, was to determine the inner diameter of railway hollow axle. The axle design method of EN standard was used for Finite Element Analysis, and the axle of Korean standard Electric Multiple Unit(K-EMU) was applied for that of model. Consequently, it was estimated that approximately 20% of axle mass could be reduced with hollow axle design.