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Novel three-dimensional negative Poisson's ratio honeycomb structure

A technology with negative Poisson's ratio and honeycomb structure, which is applied in the fields of instrumentation, informatics, computer material science, etc., can solve the problems of incomplete development and utilization of energy absorption capacity, low load utilization efficiency, etc., and achieve high structure utilization and energy absorption. The effect of increasing the effect

Active Publication Date: 2020-04-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] but figure 1 The single cell of the three-dimensional honeycomb structure shown is composed of six two-dimensional concave hexagonal honeycomb structures. When loaded in one direction, the three two-dimensional concave hexagonal honeycombs in this direction mainly provide the bearing capacity. The utilization efficiency of structural load-bearing is not high, and the energy-absorbing capacity has not been fully developed and utilized

Method used

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  • Novel three-dimensional negative Poisson's ratio honeycomb structure
  • Novel three-dimensional negative Poisson's ratio honeycomb structure
  • Novel three-dimensional negative Poisson's ratio honeycomb structure

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] A new three-dimensional negative Poisson's ratio honeycomb structure, combined with figure 2 , image 3 , including assembly 1 and connector 2, two assemblies 1 and the connector 2 connecting the two assemblies 1 are a unit cell, and several unit cells, that is, several groups of assembly 1 pass through the array of connector 2 When...

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Abstract

The invention relates to a novel three-dimensional negative Poisson's ratio honeycomb structure, which comprises combined bodies and connecting bodies, wherein the combined body comprises a single body and side connecting bodies, the single body is in the shape of a concave hexagon, the side connecting body is a single body provided with a through groove, the width of the through groove is the same as that of the single body, the side connecting bodies are fixedly connected to the middle parts of the planes on the two sides of the single body, the connecting bodies are fixedly connected to thesingle bodies and the side connecting bodies respectively, and the multiple sets of combined bodies are arrayed into a honeycomb shape through the connecting bodies. The honeycomb structure has the advantages of light weight, high specific strength and specific rigidity as well as excellent energy absorption characteristic.

Description

technical field [0001] The invention relates to the technical field of material structures, in particular to a novel three-dimensional negative Poisson's ratio honeycomb structure. Background technique [0002] With the development of engineering technology, materials with conventional mechanical properties can no longer meet people's demand standards in some fields, which makes negative Poisson's ratio materials with special mechanical properties gradually come into the field of vision of researchers. Such as figure 1 As shown, the negative Poisson's ratio honeycomb structure (referring to the structure in which the material expands laterally in the elastic range when stretched; when compressed, the material shrinks laterally) has good energy absorption effect, specific strength and specific strength. Its high rigidity, excellent shock absorption performance and low relative density and other excellent properties, and its high porosity make it possible to design complex an...

Claims

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Application Information

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IPC IPC(8): G16C60/00G16C20/50G16C20/80
CPCG16C60/00G16C20/50G16C20/80Y02T90/00
Inventor 梁军沈建邦葛敬冉张启刘亚波高付超
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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