Abstract

A new prefolded tube is proposed by introducing web into a thin-walled tube based on “Miura origami”. The quasi-static compression analysis of this tube shows that the web has an important influence on deformation mode and energy absorption. Compared with a circular tube, the new thin-walled tube not only maintains the superior performance of low initial peak force and induced deformation mode, but also has a better energy absorption capacity. The influences of the number of units, edges, and prefolding angle on the deformation process of the new thin-walled tube are determined through parameter analysis. An optimized structure is designed, and the initial peak force is reduced. The energy absorption of the new structure under quasi-static compression is also theoretically analyzed, and the theoretical results are in good agreement with the numerical simulation results.

摘要

通过将网引入基于“Miura origami”的薄壁管中，提出了一种新的预折叠管。该管的准静态压缩分析表明，腹板对变形方式和能量吸收有重要影响。与圆管相比，新型薄壁管不仅保持了低初始峰值力和诱发变形模式的优越性能，而且具有更好的能量吸收能力。通过参数分析确定了单元数、边数和预折角对新型薄壁管变形过程的影响。设计了优化的结构，降低了初始峰值力。新结构在准静态压缩下的能量吸收也进行了理论分析，