Negative Poisson's ratio metamaterial structural member with double-layer concave hexagons

By designing a three-dimensional negative Poisson's ratio metamaterial structural part built with a double-layer concave hexagon, the problem of heavy and complex mechanical movement of the deformed wing is solved, and flexible changes in the wing shape and improved aircraft performance are achieved.

CN119637070APending Publication Date: 2025-03-18BEIHANG UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202510027807.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The mechanical movement of existing deformed wings is bulky, complex and inefficient, making it difficult to effectively change the shape of the wing during flight to adapt to different flight speeds.

Method used

A three-dimensional negative Poisson's ratio metamaterial structure piece constructed from a double-layer concave hexagon is designed, and a single array is arranged along the wing chord direction, and a support structure is formed through linear array connections, so that the deformation characteristics of the negative Poisson's ratio material can be used to achieve deformability of the wing.

Benefits of technology

The ability to change the shape of the wing during flight without mechanical action is achieved, the performance of the aircraft is improved at various speeds, and the metamaterial structural parts have good stability and high elastic stiffness.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a negative Poisson's ratio metamaterial structural member which is of a double-layer concave hexagonal structure and serves as a supporting piece of a deformable wing. The metamaterial structural members are arranged in a single-row array mode in the wing chord direction of the wing. The metamaterial structural member comprises 6 straight rods and 16 connecting rods, every two connecting rods are parallel to each other and are arranged between every two straight rods in the same inclined direction, and every two straight rods are spatially parallel to each other; the metamaterial structural members designed by the invention are connected through a linear array in a three-dimensional space to form a supporting structure. The deformation direction of the metamaterial structural member is more stable, and Poisson's ratio adjustability within a certain range is achieved.
Need to check novelty before this filing date? Find Prior Art