A chiral compression-twist superstructure material

Abstract

The invention belongs to the technical field of mechanical metamaterials, in particular to a high-strength chiral compression-torsion superstructure material. The chiral compression-twist superstructure material of the present invention is formed by repeatedly stacking several cells; each cell is a cube surrounded by six in-plane chiral structures with the same structure; the in-plane chiral structure consists of 8 beams and A ring is composed of coplanar; among the 8 beams, 4 long beams and 4 short beams are alternated, one end is tangent to the ring respectively, and is combined into a whole, and the other end is located at the four vertices of a square and the square of the square. At the midpoint of the four sides; in the cell, there are six in-plane chiral structures with the same structure, and the outer endpoints of the three adjacent beams of the two in-plane chiral structures are connected correspondingly to form a space cube. The superstructural material exhibits stable and significant torsional behavior under compression, and the maximum compression-torsional angle can be adjusted by the thickness of the beam, the number of cells and the number of layers.

Description

technical field [0001] The invention belongs to the technical field of mechanical metamaterials, in particular to a high-strength chiral compression-torsion superstructure material. Background technique [0002] Mechanical metamaterials are an emerging field of research in recent years. They have attracted much attention because of their extraordinary physical and mechanical properties that cannot be achieved by natural materials, aiming to continuously break through the limits of traditional structural mechanical properties. 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] The existing compression-torsion metamaterials often have the disadvantages of complex structure and high manufacturing difficulty, and are prone to fracture, eccentricity, instability and damage whe...

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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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