Title: Optimisation of crush characteristics of the cylindrical origami structure

Authors: Z. Wu, I. Hagiwara, X. Tao

Addresses: Department of Mechanical Science and Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan. ' Department of Mechanical Science and Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan. ' Department of Mechanical Science and Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan

Abstract: This paper introduces an application of progressive collapse deformation structure that is called the Cylindrical Origami Structure (COS), which has the ability to absorb the shock of impact. The geometric analysis of COS is presented first. Then the characteristics of COS are further optimised using the most probable optimisation design. After that, the numerical models of COS are constructed and analyses are performed by using the finite element method. Finally, based on the optimised model, two kinds of subdivision scheme (Loop and Modified Butterfly) are employed to smooth the shape of it.

Keywords: cylindrical origami structure; progressive collapse deformation; subdivision; shock absorption; optimisation; crush characteristics; vehicle impact; finite element method; FEM; vehicle crashes; vehicle design.

DOI: 10.1504/IJVD.2007.012296

International Journal of Vehicle Design, 2007 Vol.43 No.1/2/3/4, pp.66 - 81

Published online: 04 Feb 2007 *

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