An origami structure exhibiting both structural stability and mechanical flexibility

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-05-24 DOI:10.1016/j.tws.2025.113500

Ning Feng , Yuanhao Tie , Ronghui Guo , Jie Yan , Qingwen Yuan , Klaus Pantke , Andras Biczo

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引用次数: 0

Abstract

Origami is an ancient craft that enables paper to be skillfully folded into delicate three-dimensional (3D) structures. In recent years, the integration of origami into the realm of mechanical metamaterials has given rise to origami metamaterials, garnering significant attention across diverse disciplines. The present study takes inspiration from the art of origami to propose an innovative origami structure. The structure consists of several unit cells rotating array, and the structure are accurately localized by establishing the spatial equations. Meanwhile, theoretical, experimental and finite element (FE) methods are used to thoroughly investigate the load-bearing capacity of the structure, the significant stiffness discrepancy in the two directions, and the cavity volume. The study reveals that the structure exhibits a load-bearing capacity exceeding 1730 times its own weight and demonstrates a maximum stiffness ratio of 74.35 in two directions, while also displaying a negative Poisson’s effect. Additionally, the structure exhibits bi-stability during an indefinite flipping process, and the cavity volume of a single structure can be tuned by orders of magnitude under pressure. This study further advances the field of origami metamaterials and provides new ideas for the design of origami metamaterial structures.

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折纸结构既具有结构稳定性又具有机械柔韧性的折纸结构

折纸是一种古老的工艺，可以将纸张巧妙地折叠成精致的三维结构。近年来，将折纸与机械超材料领域相结合，产生了折纸超材料，引起了各个学科的极大关注。本研究以折纸艺术为灵感，提出一种新颖的折纸结构。该结构由多个单元格旋转阵列组成，通过建立空间方程对结构进行精确定位。同时，采用理论、实验和有限元（FE）方法对结构的承载能力、两个方向的显著刚度差异以及空腔体积进行了深入研究。研究表明，该结构的承载能力超过自重的1730倍，两个方向的最大刚度比为74.35，同时也表现出负泊松效应。此外，该结构在无限翻转过程中表现出双稳定性，并且单个结构的空腔体积在压力下可以调谐到数量级。该研究进一步推动了折纸超材料领域的发展，为折纸超材料结构的设计提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.