Abstract
In the development of 1BOX-car body structure with many various types, design change of one body type causes too much affection to other body types and causes too much effort to design again. So we tried to use FOA for design process of new car development. And we investigated body stiffness and eigenfrequency of new car body structure by using FOA. In this paper, we report the effectiveness of using FOA in the new car development process.