알루미늄 전동차 응력해석 및 압출단면 치수최적화 연구

초록

'Standardization Electric Multiple Unit' is the standard model of Korea. It has been started by MOVC government and for the first time the design of its carbody is made of aluminium alloy. This Standardization EMU is consisted of 4 cars, 1 unit, and will run the real service line for confirming the ability test. Hereafter domestic EMU carbody will be manufactured not stainless steel but aluminium alloy, it is necessary to evaluate the stability for the aluminium carbody and the optimization design for the section thickness. By utilizing the finite element analysis program NASTRAN the result in this paper is enough to satisfy the strength which is required. Test result is compared by analysis result. It is known that the 'Standardization Electric Multiple Unit' is designed safely. Also for the purpose of lightening it si decided the thickness of the underframe section through size optimization research. Through the analysis, underframe is over-designed for required design conditions.