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Impact-resistant curved rod dot-matrix sandwiching board structure

A technology of lattice structure and lattice substructure, applied in layered products, metal layered products, synthetic resin layered products, etc., can solve the problems of weakening the mechanical performance of the structure, large impact stress of straight rods, etc., and achieve weight reduction , Excellent impact resistance, the effect of reducing the peak stress

Active Publication Date: 2019-04-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the traditional space lattice structure of straight rods receives an impact, since the straight rods will generate a large impact stress during the bending process, and the straight rods will produce Euler buckling during the deformation process, the structural strength will be greatly reduced. force performance

Method used

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  • Impact-resistant curved rod dot-matrix sandwiching board structure
  • Impact-resistant curved rod dot-matrix sandwiching board structure
  • Impact-resistant curved rod dot-matrix sandwiching board structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: as Figure 1~3 Shown is a four-layer grid type impact-resistant curved bar lattice sandwich panel structure. The upper surface plate 1 and the lower surface plate 2 are made of glass fiber reinforced plastics. The curved bar lattice substructure 4 adopts a regular quadrilateral configuration, and the material is made of glass steel. The regular quadrilateral curved bar lattice substructure 4 is as follows figure 2 Extend along the Z direction as shown, and then extend it along the XY plane to finally form the core layer 3 of the four-layer grid-type impact-resistant curved rod lattice sandwich panel structure, and finally form the four-layer grid-type impact-resistant curved rod The core layer 3 of the lattice sandwich panel structure is combined with the upper panel 1 and the lower panel 2 of FRP to form a four-layer grid type impact-resistant curved bar lattice sandwich panel structure. The core layer of the four-layer grid-type impact-resistant curved...

Embodiment 2

[0033] Embodiment 2: as Figure 4~6 Shown is a single-layer honeycomb impact-resistant curved bar lattice sandwich panel structure. The upper surface plate 1 and the lower surface plate 2 are plates made of reinforced concrete. The curved bar lattice substructure 4 adopts a regular hexagonal configuration, and the material is steel , the regular hexagonal curved rod lattice substructure 4 is extended along the XY plane to form a single-layer honeycomb curved rod lattice structure core layer 3, and then the formed single-layer honeycomb curved rod lattice structure core layer 3 is placed on the reinforced concrete The surface plate 1 is combined with the lower surface plate 2 to form a single-layer honeycomb impact-resistant curved bar lattice sandwich structure. The core layer of the single-layer honeycomb curved rod lattice structure acts as a skeleton to support the upper and lower skins, so that the upper and lower skins have a certain bending stiffness. When the impact loa...

Embodiment 3

[0034] Embodiment 3: as Figure 7-9 Shown is a double-layer triangular impact-resistant curved bar lattice sandwich panel structure, the upper surface plate (1) and the lower surface plate (2) are plates made of hard plastic, and the curved bar lattice substructure 4 adopts an equilateral triangle configuration , the material is made of hard plastic, and the lattice substructure of equilateral triangle curved rods 4 is first as Figure 8 Extend along the Z direction as shown, and then extend it along the XY plane to finally form the core layer 3 of the double-layer triangular impact-resistant curved bar lattice sandwich panel structure, and then form the double-layer triangular anti-impact curved bar lattice The core layer 3 of the sandwich panel structure is combined with the hard plastic upper panel 1 and the lower panel 2 to form a double-layer triangular impact-resistant curved bar lattice sandwich panel structure. The core layer of the double-layer triangular impact-resi...

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PUM

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Abstract

The invention discloses an impact-resistant curved rod dot-matrix sandwiching board structure. A curved rod dot-matrix structure and a sandwiching board structure are combined to obtain the sandwiching board structure having light weight, high strength and strong impact resistance. The impact-resistant curved rod dot-matrix sandwich board structure consists of an upper surface board, a lower surface board, and a curved rod dot-matrix structure core layer, wherein the curved rod dot-matrix structure core layer is formed by single curved rod substructures extending in a space, and each single curved rod substructure is formed by a plurality of same-shaped curved rods crossed at equal angles. The curved rod dot-matrix structure is light in weight and high in strength, has good deforming capability and energy absorption efficiency under the effect of impact load, is combined with the sandwiching board structure to have good flexural rigidity and impact resistance and has broad applicationprospects in the fields of aerospace, civil engineering, machinery manufacturing and the like.

Description

technical field [0001] The invention relates to a sandwich plate structure, in particular to an impact-resistant curved bar lattice sandwich plate structure. Background technique [0002] Sandwich panel structure is a composite structure of plate and shell structure. Its two surfaces are made of very thin plates, and a lighter sandwich layer is sandwiched in the middle. The former is called the surface plate and requires high strength; the latter is called the interlayer and requires light weight. Generally, the strength of sandwich structure materials is higher than that of a single panel material or core material, and its weight and cost are lower than that of a single material. It has excellent specific stiffness and specific strength, so it is widely used in construction, road transportation, Rail transit, aviation, communication, wind power and other fields. [0003] The main function of the core layer is to maintain the distance between the upper and lower panels and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00B32B27/20B32B27/08B32B3/12B32B3/08B32B13/00B32B13/06B32B15/18B32B15/02B32B15/01
CPCB32B3/08B32B3/12B32B13/00B32B13/06B32B15/016B32B15/02B32B15/18B32B27/00B32B27/08B32B27/20B32B2307/102B32B2307/304B32B2307/3065B32B2307/558
Inventor 万水苏强年玉泽李夏元周鹏王潇郑涛徐杰杨湛
Owner SOUTHEAST UNIV
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