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High-strength light protective lattice structure material with stable deformation

A lattice structure, high-strength technology, applied in geometric CAD, instruments, calculations, etc., can solve problems such as poor performance, achieve excellent mechanical properties, reduce stress concentration, and improve mechanical properties.

Pending Publication Date: 2022-03-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor performance in the prior art and provide a high-strength and lightweight protective lattice structure material with stable deformation; the lattice structure of the present invention can ensure that the lattice structure material is light and easy to prepare At the same time, improve the impact energy absorption capacity of the material

Method used

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  • High-strength light protective lattice structure material with stable deformation
  • High-strength light protective lattice structure material with stable deformation
  • High-strength light protective lattice structure material with stable deformation

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and embodiment the present invention will be further described;

[0032] Commonly used lightweight protective structures usually use porous materials as energy-absorbing main parts, and use the large plastic deformation capacity of porous materials to absorb impact energy, so as to ensure that the impact stress borne by the protected structure is maintained below the allowable stress value, and the protected main structure does not Destruction occurs. Studies have shown that the lattice structure material composed of traditional constant cross-section rods has disadvantages such as low rigidity / strength, low energy absorption capacity, and unstable deformation, and the discontinuity of the connection between the rods and the periodic symmetry of the cell structure It is easy to cause serious local damage to the material, which greatly reduces the service capability of the lattice structure material. The lattice structure m...

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Abstract

The invention relates to a high-strength lightweight protective lattice structure material with stable deformation, in particular to a lightweight impact-resistant lattice structure material capable of being used as a lightweight protective structure core layer, and belongs to the technical field of material / structure lightweight design and protection. The non-constant-section rod pieces are adopted as the cell element rod pieces of the lattice structure material, butterfly-shaped transition is adopted at the joints between the rod pieces, and axial deformation of the rod pieces can be converted into shear torsion deformation at the joints; the whole cell structure is cubic asymmetry, so that the material deflects integrally when subjected to external compression load, local damage and collapse in the material are effectively limited, the deformation stability and energy absorption capacity of the material are improved, and a protected object is effectively protected.

Description

technical field [0001] The invention relates to a high-strength light-weight protective lattice structure material with stable deformation, in particular to a light-weight impact-resistant lattice structure material that can be used as a core layer of a light-weight protective structure, and belongs to material / structure lightweight design and protection technology field. Background technique [0002] Reducing structural weight and increasing effective load is an eternal theme pursued by designers of advanced vehicles and new protective structures, and it is also a major strategic demand faced by my country's equipment development field. Lattice structure materials have the characteristics of high porosity (greater than 80%), high specific rigidity / strength, impact resistance (large plastic deformation capacity) and multi-functional designability, etc., and are favored by domestic and foreign aerospace vehicles and naval ships. It is an advanced lightweight, high-strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15
CPCG06F30/15G06F2113/26
Inventor 肖李军宋卫东冯根柱徐萧
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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