Abstract
In rolling stocks, reduction of life cycle cost is one of the important subjects. However, in the improvement of the conventional vehicle system, a radical cost cutting is difficult. AC-Train (Advance Commuter Train) has been developed by JR East to achieve next generation commuter train, and various difficult structures which cannot be tried in usual operated vehicle are loaded in it. This paper deals with the articulated system and double skin structure which are adopted in AC Train to aim at lightweight and low manufacture cost.
