High-strength chiral compression-torsion superstructure material

Abstract

The invention belongs to the technical field of mechanical metamaterials, and particularly relates to a high-strength chiral compression-torsion superstructure material. The chiral compression-torsion superstructure material is formed by repeatedly stacking a plurality of cell elements, each cell element is a cube enclosed by six in-plane chiral structures with the same structure, each in-plane chiral structure consists of 8 beams and a circular ring which are coplanar, four long beams and four short beams are arranged at intervals in the eight beams, one ends of the four long beams and the four short beams are respectively tangent to the circular ring and are combined into a whole, the other ends of the four long beams and the four short beams are respectively located at four vertexes of a square and midpoints of four edges of the square, outer end points of three beams of every two adjacent in-plane chiral structures of the six same in-plane chiral structures are correspondingly connected to form a space cube in each cell element. The super-structure material can generate a stable and substantial torsion behavior when being pressed, and the maximum compression-torsion angle can be regulated and controlled through the thickness of the beams, the number of the cell elements and the number of layers.

Description

technical field [0001] The invention belongs to the technical field of mechanical metamaterials, and in particular relates to a high-strength chiral compression-torsion superstructure material. Background technique [0002] Mechanical metamaterials is an emerging research field in recent years. It has attracted much attention because of its extraordinary physical and mechanical properties that cannot be achieved by natural materials. It aims to continuously break through the mechanical performance limits of traditional structures. The design concept of mechanical metamaterials is to achieve extraordinary mechanical properties through the optimal design of the material cell configuration. Its performance mainly depends on the artificially designed microscopic cell structure. [0003] Existing compression-torsion metamaterials often have disadvantages such as complex structure and high manufacturing difficulty, and are prone to fracture, eccentricity, instability and destruct...

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Problems solved by technology

[0003] Existing compression-torsion metamaterials often have disadvantages such as complex structure and high manufacturing difficulty. They are prone to fracture, eccentricity, instability and destruction when under pressure, resulting in poor durability of compression-torsion structures.

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