The invention discloses a metamaterial load reduction structure and method suitable for high-speed water entry impact. The metamaterial load reduction structure comprises a rectification head cover and a negative Poisson's ratio honeycomb structure in the rectification head cover. The negative Poisson's ratio honeycomb structure is composed of a plurality of star-quadrilateral unit cell elements; each unit cell element comprises a quadrangular star-shaped structure located in the middle and quadrilateral structures arranged at the four vertex angles of the quadrangular star-shaped structure; the quadrangular structure is provided with a unique right angle, and the vertex angle of the quadrangular star-shaped structure is connected with the opposite angle of the right angle of the quadrangular structure. A framework is arranged at the concave part of the quadrangular star-shaped structure; the cell elements are connected with the right-angle sides through the adjacent right-angle sides, and the skeletons are connected with the adjacent skeletons. According to the metamaterial load reduction structure, the impact load borne by the navigation body when the navigation body enters water can be reduced, and the high-speed safe entry of the navigation body into water is achieved.
本发明公开了一种适用于高速入水冲击的超材料降载结构及方法,包括整流头罩以及整流头罩内部的负泊松比蜂窝状结构;所述负泊松比蜂窝状结构由多个星型‑四边形的单胞元组成;每个单胞元包括位于中间的四角星型结构,和设置在四角星型结构四个顶角的四边形结构;其中四边形结构设有唯一的一个直角,四角星型结构的顶角与四边形结构直角的对角相连;四角星型结构的凹处设有骨架;各个胞元通过相邻的直角边与直角边相连,骨架与相邻骨架相连。本发明的超材料降载结构能够降低入水时的航行体受到的冲击载荷,实现航行器高速安全入水。
Metamaterial load reduction structure and method suitable for high-speed water entry impact
一种适用于高速入水冲击的超材料降载结构及方法
2024-12-13
Patent
Electronic Resource
Chinese
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