An impact-resistant curved bar lattice sandwich panel structure

A lattice structure, impact-resistant technology, applied in layered products, metal layered products, synthetic resin layered products, etc., can solve the problems of large impact stress of straight rods, weaken the mechanical performance of structures, etc., and achieve impact resistance Excellent, weight-reducing, and stress-peak-reducing effects

Active Publication Date: 2021-06-11
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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  • An impact-resistant curved bar lattice sandwich panel structure
  • An impact-resistant curved bar lattice sandwich panel structure
  • An impact-resistant curved bar lattice sandwich panel 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 plates made of glass fiber reinforced plastics. The single curved bar structure 4 adopts a regular quadrilateral configuration, and the material is made of glass steel. Regular quadrilateral single curved rod substructure 4 as first 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 rod la...

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 single curved bar structure 4 adopts a regular hexagonal configuration, and the material is steel. Extend the regular hexagonal single curved rod substructure 4 along the XY plane to form a single-layer honeycomb curved rod lattice structure core layer 3, and then connect the formed single-layer honeycomb curved rod lattice structure core layer 3 with the reinforced concrete upper surface 1 is combined with the lower surface plate 2 to form a single-layer honeycomb impact-resistant curved bar lattice sandwich panel 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 load is app...

Embodiment 3

[0034] Embodiment 3: as Figure 7~9 Shown is a double-layer triangular impact-resistant curved rod lattice sandwich panel structure, the upper surface plate (1) and the lower surface plate (2) are made of hard plastic plates, and the single curved rod substructure 4 adopts an equilateral triangle configuration, The material is hard plastic, and the equilateral triangular single curved rod structure 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-resistant curved bar...

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PUM

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Abstract

The invention discloses an impact-resistant curved bar lattice sandwich plate structure. The curved bar lattice structure is combined with the sandwich plate structure to obtain a light-weight, high-strength, and strong impact-resistant sandwich plate structure. The structure is composed of an upper surface plate, a lower surface plate, and a curved rod lattice structure core layer. The curved rod lattice structure core layer is formed by extending a single curved rod substructure in space, and a single curved rod substructure consists of several shapes The same curved rods are crossed at equal angles. The curved rod lattice structure is light in weight and high in strength. It has good deformation capacity and energy absorption efficiency under impact load, and it has relatively good bending stiffness and impact resistance when combined with the sandwich plate structure. It has broad application prospects in aerospace, civil engineering, machinery manufacturing and other fields.

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 Patents(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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