二枚貼り折紙構造のエネルギー吸収特性

抄録

Two pairing origami structures have been attracting attention as a three-dimensional version of the Miura-Ori. Here, as a typical example, we treat Nojima polyhedron (NP) and Tachi-Miura polyhedron (TMP) to check the validity as an energy-absorbing material. Effectiveness as an energy absorber of reversed spiral cylindrical origami structure (RSC); the amount of energy absorption is 1.7 times the current hollow hat-shaped cross-section structure, no excessive initial peak load by a flat characteristics of relation between load and displacement, to extend the crash time by inverting. Although its effectiveness was shown, it is not always easy to use practically by relying on expensive hydroforming. On the other hand, NP, there is less initial peak load, shows a gentle characteristics of relation between load and displacement, that variation lasts up to 90 per cent of its own length, and the manufacturing costs inexpensive, so it is shown that there is a possibility as an energy absorbing structure.