CN-224224688-U - Negative poisson ratio and multistable super-structural material impact-resistant composite structure

Abstract

The utility model provides an impact-resistant composite structure of a negative poisson ratio and multistable super-structured material, which comprises an anti-elastic ceramic layer, a PE (polyethylene) plate layer, a negative poisson ratio super-structured material layer and a multistable super-structured material layer, wherein the threat of explosion impact and high-speed penetration of objects is effectively overcome through reasonable hierarchical arrangement and material selection. The anti-bullet ceramic layer is used for consuming the kinetic energy of a high-speed object, and the PE plate layer provides support through toughness and further absorbs energy. The negative poisson ratio super-structure material layer and the multistable super-structure material layer utilize good impact resistance and energy absorption performance of the material layer, slow down shock waves and reduce the risk of structural damage. The multistable super structure material layer has the characteristics of elastic deformation and reusability, and prolongs the service life of the protective equipment. The multistable super-structure material layers are connected through bolts and buckles, so that the multistable super-structure material layers are convenient to detach and recycle. The structure adopts a lightweight design, is suitable for manufacturing protection facilities such as walls, armors and the like, and has excellent protection performance and operability.

Inventors

• JIANG CHUNYUN
• BAI LIHONG
• ZHONG CHAOFAN
• ZHANG ZHIMEI
• WANG QICHENG
• YU GUOJI
• YANG ZIZHEN
• DANG WEI
• MIAO CHENG
• Xin Mingda
• YU XIANLE
• LU RUIJIAO

Assignees

• 中国兵器工业集团第五二研究所

Dates

Publication Date

20260512

Application Date

20241201

Claims (5)

1. 1. The utility model provides a negative poisson's ratio and multistable super structure material composite construction that shocks resistance, its characterized in that includes bullet resistant ceramic layer (1), PE board (2), negative poisson's ratio super structure material layer (3) and multistable super structure material layer (4) from the top down in proper order, and ceramic layer (1) are connected with PE board (2) of lower floor through the bonding mode, and PE board (2) are connected with negative poisson's ratio super structure material layer (3) of third floor through bonding, and negative poisson's ratio super structure material layer (3) are connected with multistable super structure material layer (4) of bottom through bolt or buckle form.
2. 2. The negative poisson's ratio and multistable metamaterial impact resistant composite structure according to claim 1, wherein the material used for the anti-ballistic ceramic layer (1) is alumina or boron carbide.
3. 3. The negative poisson's ratio and multistable super structure material impact resistant composite structure according to claim 1, wherein the material of the negative poisson's ratio super structure material layer (3) and the multistable super structure material layer (4) is steel or titanium alloy.
4. 4. A negative poisson's ratio and multistable super structure material impact resistant composite structure according to claim 3, wherein the negative poisson's ratio super structure material layer (3) and the multistable super structure material layer (4) are both in the form of porous structures.
5. 5. The negative poisson's ratio and multistable super structure material impact resistant composite structure according to claim 1, wherein the multistable super structure material layer (4) adopts a multistable characteristic, can maintain elasticity after being subjected to explosion impact, and has reusability.

Description

Negative poisson ratio and multistable super-structural material impact-resistant composite structure Technical Field The utility model belongs to the technical design field of protection, and particularly relates to an impact-resistant composite structure of a negative poisson ratio and multistable super-structured material, which can realize effective penetration resistance and attenuation effects on high-speed ammunition and detonation shock waves. Background With the widespread use of unmanned aerial vehicles and various missiles in the battlefield, the protection requirements for armor and defence work become increasingly severe. Through the design of integrated structure and function, can show the harm that alleviates explosion impact to equipment to provide effective protection for vehicle, engineering and personnel. Meanwhile, according to the characteristics of different materials and the protection function thereof, the structures of the materials are reasonably combined and laid out, and the breaking penetration and the damage of shock waves to the internal structure can be reduced to the greatest extent. The ceramic material can effectively resist the invasion of fragments and warheads due to the excellent hardness, and rapidly consume the quality and kinetic energy of the ceramic material. The PE plate has excellent toughness and fracture resistance, and shows remarkable protective performance when resisting low-speed fragments and warheads. In addition, porous negative poisson's ratio materials may develop indentation resistance when compressed, and surrounding materials may deform toward the crush zone, thereby enhancing their penetration resistance and energy absorption. The multistable structure is capable of providing a certain support stiffness by virtue of its unique arched design. The structure can be rapidly deformed to absorb energy when encountering impact stress, and can keep elastic deformation and recover the original shape to a certain extent under the condition of low stress wave conduction, thereby having the advantage of being reusable. Meanwhile, the negative poisson ratio and the multistable porous structure design effectively cut off the propagation path of stress waves, and the stress waves are dispersed to a larger area, so that damage of shock wave peaks to the internal structure is reduced. In the prior art, the protection effect is enhanced by utilizing the mutual coordination between layers in the patent documents with application numbers of CN201911214572.9, CN201922125677.9 and the like, and the three-dimensional structure design for explosion prevention and fragment prevention based on protection plates is provided in the patent document with application number of CN 201921834773.4. Disclosure of utility model The utility model aims to provide an impact resistant structure compounded by negative poisson ratio and multistable super-structural materials, which aims to effectively improve the impact resistance of protective equipment in the face of external force threats such as explosion impact, fragments, elastomers and the like. The composite structure can be widely applied to safety protection of military protective equipment and explosive places and other fields requiring impact protection. Through the composite design of multiple materials, the impact-resistant protection structure which is efficient, partially reusable, light in weight and excellent in energy absorption performance is provided, and the damage of external impact to the structure is reduced to the greatest extent. The utility model provides an impact-resistant composite structure of a negative poisson ratio and multistable super-structured material, which mainly comprises the following technical scheme: The negative Poisson's ratio and multistable super structure material impact resistant composite structure sequentially comprises an anti-elastic ceramic layer, a PE plate, a negative Poisson's ratio super structure material layer and a multistable super structure material layer from top to bottom, wherein the ceramic layer is connected with the PE plate at the lower layer in an adhesion manner, the PE plate is connected with the negative Poisson's ratio super structure material layer at the third layer in an adhesion manner, and the negative Poisson's ratio super structure material layer is connected with the multistable super structure material layer at the bottommost layer in a bolt or buckle manner. Further, the material used for the anti-elastic ceramic layer is aluminum oxide or boron carbide. Further, the material of the negative poisson ratio super-structure material layer and the multistable super-structure material layer is steel or titanium alloy. Further, the negative poisson ratio super-structure material layer and the multistable super-structure material layer are in a porous structure form. Furthermore, the multistable super-structure material layer adopts the multistable characteri