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Core cell structure, core with porous structure and sandwich energy absorption structure

A technology of porous structure and energy-absorbing structure, which is applied in the direction of layered products, metal layered products, transportation and packaging, etc., can solve the problems of impact resistance, shock absorption and buffering, and insufficient energy absorption, and achieve light weight, easy control, Good thermal insulation effect

Active Publication Date: 2019-11-26
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of science and technology, high-tech fields such as automobiles, aerospace, and navigation have higher and higher requirements for lightweight and high-performance structures. At present, the above-mentioned common sandwich structures at home and abroad can resist impact, shock absorption, cushioning, Significantly insufficient energy absorption

Method used

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  • Core cell structure, core with porous structure and sandwich energy absorption structure
  • Core cell structure, core with porous structure and sandwich energy absorption structure
  • Core cell structure, core with porous structure and sandwich energy absorption structure

Examples

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Embodiment 1

[0034] Such as figure 2 and image 3 As shown, the core cell structure of the present embodiment includes an outer layer 311 and an inner layer 312, and both the outer layer 311 and the inner layer 312 are three-period minimal curved surfaces (the three-period minimal curved surfaces are the average curvature extended to three-dimensional space zero surface, referred to as TPMS, where the three-period refers to the dimension extending to the surrounding space), a cavity is formed between the outer layer 311 and the inner layer 312, and a connection connecting the outer layer 311 and the inner layer 312 is provided in the cavity Plate 313 (such as a rib plate, which plays a role in connection and support); the outer layer 311 and the inner layer 312 are provided with an upper opening 314 and a lower opening 315 extending outward from the cavity, and the upper opening 314 and the lower opening 315 are arranged oppositely. Four side openings 316 extending out of the cavity are ...

Embodiment 2

[0041] The difference between this embodiment and Embodiment 1 lies in the specific shapes of the first interlayer 1 and the second interlayer 2, such as Figure 5 As shown, in this embodiment, both the first interlayer 1 and the second interlayer 2 use curved panels, which are conveniently applicable to fields such as automobiles and aerospace. Of course, when the overall structure satisfies the energy absorption performance, the weight of the overall structure can be effectively reduced by increasing the weight reducing holes 4 and reducing the thickness of each interlayer. Other contents not described are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0043] The difference between this embodiment and Embodiment 1 lies in the specific shapes of the first interlayer 1 and the second interlayer 2, such as Figure 6 and Figure 7 As shown, in this embodiment, both the first interlayer 1 and the second interlayer 2 are circular tubes, and the porous structure core 3 is pasted between the outer tube and the inner tube. Other contents not described are the same as those in Embodiment 1, and will not be repeated here.

[0044] In summary, the porous structure core of the present invention (i.e. double-layer curved surface porous structure) makes sandwich structures such as sandwich flat panels, sandwich curved panels and sandwich pipes have higher energy absorption efficiency, thermal insulation, heat insulation performance, and sound insulation performance. Better, more multifunctional and comprehensive, which can meet the needs of high-tech industries such as aerospace and navigation. Of course, such a porous structure core bod...

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Abstract

The invention discloses a core cell structure. The core cell structure comprises an outer layer and an inner layer, wherein both the outer layer and the inner layer are three-period minimal curved surfaces; a cavity is formed between the outer layer and the inner layer; a connecting plate for connecting the outer layer with the inner layer is arranged in the cavity; an upper opening and a lower opening which extend to the outside of the cavity and are opposite to each other are formed in each of the outer layer and the inner layer; and a plurality of lateral openings which extend to the outside of the cavity are formed in the peripheral side of each of the outer layer and the inner layer. The invention also discloses a core with a porous structure. The core with the porous structure comprises the core cell structures, wherein the adjacent core cell structures are in butt joint with each other through the corresponding opening, and the outer layers and the inner layers of the core cellstructures form a continuous curved surface. The invention also discloses a sandwich energy absorption structure which comprises a first interlayer, a second interlayer and the core with the porous structure, and the core with the porous structure is clamped between the first interlayer and the second interlayer. The core cell structure, the core with the porous structure and the sandwich energy absorption structure have the advantages of simple structure, high energy absorption efficiency and the like.

Description

technical field [0001] The invention mainly relates to the field of core technology, in particular to a core cell structure, a porous structure core and a sandwich energy-absorbing structure. Background technique [0002] The natural world has always been the source of inspiration for human beings to obtain inventions and creations. The unique shape, internal microstructure and optimization principles of living organisms provide new design ideas and bionic theoretical references for engineering technology R&D personnel. Porous materials widely exist in nature, such as wood, honeycomb (such as figure 1 shown), animal bones and sponges, etc. Some structures with excellent performance imitated this kind of biological structure design, such as honeycomb aluminum sandwich structure, etc., have low relative density, high specific strength and specific stiffness, high energy absorption efficiency, good impact resistance, shock absorption and buffering, heat insulation and sound in...

Claims

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Application Information

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IPC IPC(8): B32B1/00B32B3/12B32B3/26B32B15/04B32B15/18B32B15/20
CPCB32B1/00B32B3/12B32B3/266B32B15/04B32B15/18B32B15/20B32B2250/40B32B2307/102B32B2307/304B32B2307/50B32B2307/558B32B2307/56B32B2605/08
Inventor 尹汉锋杨越郑贤君文桂林刘志鹏谭丁文马帅
Owner HUNAN UNIV
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