Stacked paper folding structure with variable stiffness characteristic

Abstract

The invention discloses a stacked paper folding structure with variable stiffness characteristics, which comprises a plurality of layers of paper folding tubes stacked up and down, each paper foldingtube comprises two symmetrically arranged paper folding plates, each paper folding plate comprises a plurality of basic units, the basic units are connected in sequence, each basic unit comprises n small planes and two large planes, n is an even number greater than 2, the width ratio of the large plane to the small plane is n/2, and the large plane and the small plane are parallelograms. Due to the fact that all layers of paper folding pipes of the stacked paper folding structure are different in rigidity, when the stacked paper folding structure is subjected to compression force from top to bottom, the stacked paper folding structure generates a layer-by-layer progressive buckling instability process, firstly, the paper folding pipe with the minimum rigidity is subjected to buckling instability, and then the paper folding pipe with the second small rigidity is triggered to be subjected to buckling instability; therefore, the paper folding pipe with the maximum rigidity is obtained through recursion, and then the variable rigidity characteristic of the stacked paper folding structure is achieved. According to specific requirements, multiple layers of paper folding pipes with different rigidities can be stacked, and multiple variable stiffness characteristics are achieved.

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...

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.

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