セミモノコック自動車ボデーの解析について

抄録

For the analysis of a car body, a method to substitute it by Rahmen has been widely employed in Japan ever since Professor Mineo Yamamoto's suggestion. The author has been interested in and employing it, but feels that in using this method, it would be very convenient, if the plate part could be dealt with as a plate. For this purpose, application of the semi-monocoque theory developed in the aeronautic engineering may do well, but it is felt that because of many door and window openings, cars are hardly dealt with in the same way as aircraft. Therefore, the author attempted this analysis based on a conception that the car body is a structure consisting of Rahmen and semi-monocoque. As the first step of such study, applications of the matrix force method to the bending of a van side structure and the torsion of a cuboid Rahmen covered with plates over both upper and lower surfaces, showed good resu1ts as compared with the experiments.