분산형 고속열차 주행 진동 특성
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This study was conducted to analyze the vibration characteristics of EMU type High-speed train. To understand which route the vibration characteristics of the train are contributed and how it influences on EMU type High-speed train, OPTA analysis, which is a type of TPA, was applied to investigate the contribution level of each part. The results show high contributions from the center pivot, and low frequency vibrations had much effects on the train during the high-speed run. Henceforward, drawing the complete overall vibration flow chart by specifying researches and detailed vibration routes will lead to reduction of vibration which will expand further studies on speed improvement, ride quality and electronic parts.