도시철도차량 차축의 경량화를 위한 EN 규격 기반의 차축 응력 평가

초록

Stress analysis of urban railway axle, especially K-EMU, is discussed in this work to design lightweight hollow axle. Railway axle is one of the heaviest parts in railway car system and weight reducing of an axle should be considered in designing lightweight railway car system. EN standard, EN 13103 is referred to calculate stress of a T car axle of K-EMU and the process of stress analysis based on the EN standard is explained. It is verified that maximum stress of K-EMU axle is far below the maximum permissible strength of railway axles. The stress of a hollow axle having similar outer dimension and material with a T car axle of K-EMU is estimated and shows satisfactory result.