2017 年 83 巻 845 号 p. 16-00486
The existing collision energy absorber of vehicle collapse ideally only 70% deformation and the high initial peak load is a problem. So our group has paid attention to the reversed spiral cylindrical origami structure (RSC) to overcome these two problems, but the energy absorption amount of RSC was low. However, after optimization analysis, the energy absorption amount of optimal RSC has been obtained about 1.4 times of the existing collision energy absorber. But, because the production of RSC is expensive, the industrialization of it is difficult to realize. Here, recently two pairing origami structures are gaining attention: Nojima polyhedron (NP) and Tachi-Miura polyhedron (TMP) are compared from the point of crash absorbing energy characteristics. In this paper, we focus on the investigation of the absorbing energy performance and consider the application of these pairing origami structures to expect to be used as the collision energy absorber of vehicles of steel material. And both are compared with RSC which is manufactured by hydro forming and the conventional rectangular cross section structure.