Lightweight, high-strength metamaterials with excellent specific energy absorption (SEA) capabilities are significant for civil engineering aerospace engineering and automobile industry, etc. However, most of the mechanical metamaterials are investigated and manufactured in the shape of polyhedrons, hence limiting the application of mechanical metamaterials. Here, inspired by the foam-like protective layer of fruit, the pomelo peel, the cylindrical and spherical origami-based porous mechanical metamaterials are studied, the numerical model is validated through the experiments, and the effects of the major parameters of the structures are investigated to understand the effects of the energy absorption capacity of the structures. The research here offers a reference for designs to be used in future applications such as sports helmets, protective layers and unmanned landers.

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Parametric Study of the Porous Origami-Based Mechanical Metamaterials with Curvatures

  • Zihang Ma,
  • Keyao Song,
  • Xiang Zhou

摘要

Lightweight, high-strength metamaterials with excellent specific energy absorption (SEA) capabilities are significant for civil engineering aerospace engineering and automobile industry, etc. However, most of the mechanical metamaterials are investigated and manufactured in the shape of polyhedrons, hence limiting the application of mechanical metamaterials. Here, inspired by the foam-like protective layer of fruit, the pomelo peel, the cylindrical and spherical origami-based porous mechanical metamaterials are studied, the numerical model is validated through the experiments, and the effects of the major parameters of the structures are investigated to understand the effects of the energy absorption capacity of the structures. The research here offers a reference for designs to be used in future applications such as sports helmets, protective layers and unmanned landers.