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A stacked origami structure with variable stiffness properties

An origami structure and stacking technology, which is applied to cardboard objects, railway car body parts, motor vehicles, etc., can solve the problems of few structural parameters and limit engineering application potential, and achieve a wide range of stiffness changes, good application prospects, and stable structures Effect

Active Publication Date: 2022-02-01
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing stacked origami structures with variable stiffness have few adjustable structural parameters, which limits their engineering application potential.

Method used

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  • A stacked origami structure with variable stiffness properties
  • A stacked origami structure with variable stiffness properties
  • A stacked origami structure with variable stiffness properties

Examples

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Embodiment

[0042] In order to facilitate a unified review of the various reference signs in the drawings of the specification, the unified description of the reference signs appearing in the drawings of the specification is as follows:

[0043] 1 is the first origami tube, 2 is the second origami tube, 3 is the third origami tube, 4 is the fourth origami tube, 5 is the first origami board, 6 is the second origami board, 7 is the basic unit , 8 is the first facet, 9 is the first valley fold, 10 is the second facet, 11 is the first mountain fold, 12 is the third facet, 13 is the second valley fold, 14 is the fourth facet, 15 is the second mountain fold line, 16 is the fifth facet, 17 is the third valley fold line, 18 is the sixth facet, 19 is the third mountain fold line, 20 is the first large plane, 21 is the folded hexagonal plane, 22 is the fourth mountain fold line, 23 is the second largest plane, and 24 is the fifth mountain fold line. 25 is to expand the hexagonal plane.

[0044] I...

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Abstract

The invention discloses a stacked origami structure with variable stiffness characteristics, which comprises a plurality of layers of origami tubes stacked up and down. The origami tube includes two symmetrically arranged origami boards. Connected, each basic unit includes n small planes and 2 large planes, n is an even number greater than 2, the width ratio of the large planes to the small planes is n / 2, and both the large planes and the small planes are parallelograms. Due to the different rigidity of the origami tubes in each layer of the stacked origami structure, when subjected to the compression force from top to bottom, the stacked origami structure undergoes a progressive buckling instability process layer by layer, and the origami tube with the smallest stiffness buckles first. , and then trigger the buckling instability of the origami tube with the second smallest stiffness, so as to recurse to the origami tube with the highest stiffness, and then realize the variable stiffness characteristics of the stacked origami structure. According to specific requirements, multiple layers of origami tubes with different stiffnesses can be stacked to achieve a variety of variable stiffness characteristics.

Description

technical field [0001] The invention relates to the technical field of origami structures, in particular to a stacked origami structure with variable stiffness characteristics. Background technique [0002] Structures with varying mechanical properties of stiffness exist widely in nature, such as wood, bamboo, shells, animal bones, etc. These structures have good adaptability to natural environments. Inspired by nature, designers have studied a large number of structures with variable stiffness mechanical properties, but these structures are limited to imitating the material composition of the structure, and there are problems such as limited stiffness change, difficulty in adjusting stiffness, and heavy mass. The traditional origami process can change the spatial geometric topology of the structure by setting different crease forms. However, the existing stacked origami structures with variable stiffness have few adjustable structural parameters, which limits their enginee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D63/04B61D49/00B31D5/04
CPCB62D63/04B61D49/00B31D5/04
Inventor 文桂林陈高锡刘杰李方义
Owner GUANGZHOU UNIVERSITY
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