A Composite Structure with Negative Poisson's Ratio Effect

A combined structure and negative Poisson's ratio technology, which is applied in the direction of elastic shock absorbers, shock absorbers, shock absorbers, etc., can solve the problem of restricting the promotion and practical application of negative Poisson's ratio structures, and it is difficult to realize the application of negative Poisson's ratio structures , high cost and other issues, to achieve the effect of excellent mechanical response
CN113898690BActive Publication Date: 2022-05-24NANJING TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING TECH UNIV
Publication Date
2022-05-24

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Abstract

The invention discloses a composite structure with negative Poisson's ratio effect, comprising corrugated plates and square tubes, the corrugated plates and square tubes are arranged to realize the negative Poisson's ratio effect of the overall structure. First, design the size of the corrugated plate, the size of the square tube and the overall size; secondly, select the material of the corrugated plate and the square tube according to the actual force requirements or application scenarios. There are no specific requirements for the square tube, and it can be stably connected with the corrugated board. Then, according to the connection sequence required by the design, select the appropriate connection method for connection. The available connections include: bonding, welding, riveting, etc. The assembled composite structure of the present invention has been proved to have strong novelty and practicability, and has variable stiffness characteristics while realizing the negative Poisson's ratio effect, and has great application potential in the fields of impact protection, aerospace and sensors.
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Description

technical field

[0001] The invention relates to a composite structure designed with a negative Poisson's ratio effect by assembling a corrugated plate and a square tube, and belongs to the field of new materials and new structures. Background technique

[0002] Unlike most materials in nature, negative Poisson's ratio materials or structures contract under compression and expand under tension. This special mechanical behavior enables negative Poisson's ratio materials or structures to exhibit many desirable mechanical properties. Compared with positive Poisson's ratio materials, their shear bearing capacity, fracture resistance, energy absorption capacity, and sag resistance are all better than those of positive Poisson's ratio materials. There is a certain degree of improvement. These excellent mechanical properties also make negative Poisson's ratio materials and structures have great application potential in medical, aerospace, impact protection, sensors and other fields...

Claims

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