Shoe with negative poisson's ratio effect and design method thereof

A technology of negative Poisson's ratio and effect, which is applied in footwear, applications, processing and manufacturing, etc., can solve the problems of impracticality, negative Poisson's ratio effect cannot display products as expected, and achieve good energy absorption effect

Pending Publication Date: 2019-07-05
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional manufacturing method of negative Poisson's ratio materials cannot be practical, and the negative Poisson's ratio effect cannot be displayed in products as expected

Method used

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  • Shoe with negative poisson's ratio effect and design method thereof
  • Shoe with negative poisson's ratio effect and design method thereof
  • Shoe with negative poisson's ratio effect and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Said shoe sole and insole use requirements such as jogging, leisure, select basic material ethylene acetic acid copolymer (EVA) for use. The content of ethylene acetate (VA) is 18%, and a small amount (1 part) of stearic acid and 0.5 part of calcium stearate are appropriately added to the formula as a plasticizer and softener, and then the temperature is appropriately increased. In this example, the unit unit L=6.25mm, R=3.9mm, build the model of the sole and insole, and print it with a 3D printer.

Embodiment 2

[0039] The use requirements of the sole and insole, such as chemical resistance and dyeability, select the basic material acrylonitrile-butadiene-styrene (ABS). Level the 3D printing platform, and preheat the bottom plate to 100°C, preferably for about 1 hour. Make sure that the nozzle is heated to 210°~240°C, and adjust to the parameters required by the supplier according to the 3D printer model. In this example, the unit unit L=6.25mm, R=3.9mm, build the model of the sole and insole, and print it with a 3D printer.

[0040] Above-mentioned a kind of design method with negative Poisson's ratio effect shoes, comprises the following steps:

[0041] 1) According to the ergonomics surveying and mapping of the user's foot size, sports force point and use environment, design the specific size and biography of insoles and soles

[0042] 2) Designed periodic microstructures, including concave structures, rotating polygonal structures, chiral structures, sheet-like wrinkled structures...

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PUM

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Abstract

The invention discloses a shoe with a negative poisson's ratio effect and a design method thereof. The shoe is mainly characterized by the negative poisson's ratio microstructure design and the material selection of a sole and an insole. According to the characteristics of good energy absorption, rebounding toughness, dent resistance and the like of a material with the negative poisson's ratio, the wearing feeling of the insole and the sole with the negative poisson's ratio is light and comfortable. The method comprises simple design steps of firstly determining the foot dimension, the stresscondition and the use requirements of a user; then, designing a periodic microstructure with the negative poisson's ratio effect; drawing models of the insole and the sole by using 3d modeling software; and finally selecting basic materials for 3D printing. The manufactured shoe can be designed according to the dimension and the requirements of the user, and has excellent properties of light weight, breathability, vibration reduction function, usability under special work conditions and the like.

Description

technical field [0001] The invention relates to a design and preparation method of shoes with a negative Poisson's ratio effect by designing a microstructure with a negative Poisson's ratio effect, and belongs to the field of new materials and new structures. Background technique [0002] Negative Poisson's ratio materials often exhibit counterintuitive deformation behavior during deformation. Under uniaxial compression (tension), traditional materials expand (shrink) perpendicular to the load direction, while negative Poisson's ratio materials expand along the transverse direction. Shrink (expand). Negative Poisson's ratio microstructures are diverse, such as concave structures, rotating polygonal structures, chiral structures, sheet-like wrinkled structures, perforated plate structures, and textile-related structures. The principle of negative Poisson's ratio rotating polygonal structure produces negative Poisson's ratio effect is that after the system is stressed, the ri...

Claims

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Application Information

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IPC IPC(8): A43B3/00B29C64/10B33Y10/00B33Y80/00
CPCA43B3/00B29C64/10B33Y10/00B33Y80/00
Inventor 任鑫王仕龙韩传镇张相玉
Owner NANJING UNIV OF TECH
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