Functional gradient honeycomb sandwich board and manufacturing method thereof

Abstract

The invention belongs to the technical field of porous materials and particularly relates to a functional gradient honeycomb sandwich board and a manufacturing method thereof. The functional gradienthoneycomb sandwich board comprises at least two honeycomb sandwich layers; all the honeycomb sandwich layers are stacked and connected and are respectively provided with a plurality of unit cell bodies which are distributed and connected in a triangular-array manner; all the unit cell bodies have hollow holes and the cross sections are rectangular; all the unit cell bodies positioned at the same honeycomb sandwich layer are same in structure and material, and all the unit cell bodies positioned at the adjacent honeycomb sandwich layers are different in structure and / or material. The functionalgradient honeycomb sandwich board disclosed by the invention has the beneficial effects that prediction and control for the energy-absorbing effect can be realized, the functional gradient honeycombsandwich board has the advantages unmatched in other various porous materials in the safety field of passive protection; meanwhile, the unit cell bodies at all the honeycomb sandwich layers are controlled in size and uniform in tissue, and the structural morphology is diversified, so that the mechanical property of the whole functional gradient honeycomb sandwich board in the vertical direction shows stable functional gradient characteristic.

Description

technical field [0001] The invention belongs to the technical field of porous materials, and in particular relates to a functional gradient honeycomb sandwich panel and a manufacturing method thereof. Background technique [0002] Porous material is a kind of network structure material composed of interpenetrating or closed pores. Compared with continuum materials, porous materials generally have the advantages of low relative density, high specific strength, high specific surface area, light weight, sound insulation, heat insulation, and good permeability. In addition, porous materials usually have a very high ability to damp vibration and absorb impact energy, so they are often used to manufacture cushioning or energy absorbers and components. Porous metal material is a typical porous material. At present, the porous metal materials widely used in energy absorbers are honeycomb and foam structures (mostly aluminum foam), and are generally made into sandwich structures. ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a functionally graded honeycomb sandwich panel and its manufacturing method, aiming to solve the technical problems in the prior art that the energy absorption effect of porous materials is difficult to predict and control, and the structural form is single and complex

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