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A Grid Structure with Zero Poisson's Ratio and Its Compression Method

A grid-structured, zero-Poisson technique, used in layered products, etc.

Active Publication Date: 2017-01-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Poisson's ratio of most materials is generally positive, but it is also possible to make the structure exhibit a negative Poisson's ratio by changing the internal structure of the material

Method used

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  • A Grid Structure with Zero Poisson's Ratio and Its Compression Method
  • A Grid Structure with Zero Poisson's Ratio and Its Compression Method
  • A Grid Structure with Zero Poisson's Ratio and Its Compression Method

Examples

Experimental program
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Embodiment

[0055] Such as figure 1 As shown, a grid structure with zero Poisson's ratio includes a first transverse auxetic side 11, a second transverse auxetic side 12, a first serpentine folded oblique honeycomb side 21, a second serpentine folded oblique honeycomb side 22. The first transverse honeycomb side 31 and the second transverse honeycomb side 32; the first serpentine folded diagonal honeycomb side 21 includes the first diagonal honeycomb side 211, the second diagonal honeycomb side 212, the third The oblique honeycomb side 213 and the fourth oblique honeycomb side 214; the second serpentine folded oblique honeycomb side 22 includes the fifth oblique honeycomb side 221, the sixth oblique honeycomb side 222, and the seventh oblique honeycomb side connected in sequence 223 and the eighth oblique honeycomb side 224; the first oblique honeycomb side 211, the second oblique honeycomb side 212, the third oblique honeycomb side 213, the fourth oblique honeycomb side 214, the fifth ob...

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PUM

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Abstract

The invention discloses a grid structure with zero Poisson ratio. The grid structure comprises a first transversely pulled expansion edge 11, a second transversely pulled expansion edge 12, a first snake-shaped folding slant honeycomb edge 21, a second snake-shaped folding slant honeycomb edge 22, a first transverse honeycomb edge 31 and a second transverse honeycomb edge 32; the first transversely pulled expansion edge 11, the first snake-shaped folding slant honeycomb edge 21, the second transversely pulled expansion edge 12 and the second snake-shaped folding slant honeycomb edge 22 are sequentially connected in an end to end manner, and the first snake-shaped folding slant honeycomb edge 21 and the second snake-shaped folding slant honeycomb edge 22 are symmetric about the central shaft of the grid structure.

Description

technical field [0001] The invention relates to a grid structure technology, in particular to a grid structure with zero Poisson's ratio and a compression method thereof. Background technique [0002] Poisson's ratio is a basic mechanical property of a material, which reflects the deformation property perpendicular to the load direction when the material is subjected to a uniaxial load. Its calculation formula is [0003] v = - ε x ε y , - - - ( 1 ) [0004] Among them, ε x is the transverse strain of the material, ε y is the longitudinal strain of the material. Poisson's ratios for isotropic materials range from -1 to 0.5. The Poisson's ratio of most materials is generally positive, but it is also possible to make the structure exhibit a negative Poisson's ratio by changing the internal structure of the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/26
Inventor 刘旺玉黄家乐汪宁陵罗远强林贞琼
Owner SOUTH CHINA UNIV OF TECH