도시철도차량의 구조체 형태에 따른 경량화 연구

초록

The purpose of this study is to propose the weight reduction of the urban transit, in particular, Korean EMU car body made by aluminum extrusion profiles in according to various structural component types. First, the thickness of the underframe and sideframe are optimized by a size optimization process and the weight of the Korean EMU car body can be reduced by 15%. Second, the underframe and roof structures are substituted for a frame type structure and a sandwich composite, the weight of the Korean EMU car body can be reduced by 30%. The FE simulation results of the frame type structure and sandwich composite models met the Performance Test Standard for Electrical Multiple Unit,stipulated by Ministry of Construction & Transportation.