Design and analysis of rigid-elastic coupling origami flashers with bistable characteristics

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2024-07-26 DOI:10.1016/j.ijmecsci.2024.109602

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引用次数: 0

Abstract

Origami flashers are frequently used in the design of deployable structures due to their large storage ratio and simple structure. However, origami flashers are not foldable without the flexible deformation of the structural components. On the other hand, conventional origami flashers could not be maintained in the deployed configuration with enough supporting stiffness because of the flexibility of the facets and creases, which limits their practical applications. By analyzing the mobility of the rigid origami flashers, we find that the origami flashers have a bistability-like property. Based on this, we propose a method to design rigid-elastic coupling origami flashers with bistable characteristics. The rigid-elastic coupling origami flashers consist of rigid facets, zero-stiffness creases, and elastic ropes. The bistable folding characteristics are analyzed by theoretical models, and demonstrated by numerical methods and experiments. Such bistable characteristics allow for the deployment of the origami with less energy consumption, while achieving greater supporting stiffness in the deployed configuration. The effect of different parameters on the dynamic performance is also investigated. A fabrication method of the novel system is proposed and verified by a physical prototype. The rigid-elastic coupling origami flashers facilitate their potential applications in space engineering.

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具有双稳态特性的刚弹性耦合折纸闪光器的设计与分析

折纸闪光器因其存储率大、结构简单而经常被用于可部署结构的设计中。然而，折纸闪光器无法在结构部件不发生柔性变形的情况下进行折叠。另一方面，由于面和折痕的柔性，传统折纸闪光器无法在部署时保持足够的支撑刚度，这限制了其实际应用。通过分析刚性折纸闪光器的流动性，我们发现折纸闪光器具有类似双稳态的特性。在此基础上，我们提出了一种设计具有双稳态特性的刚柔耦合折纸闪光器的方法。刚柔耦合折纸闪光器由刚性面、零刚度折痕和弹性绳组成。双稳态折叠特性通过理论模型进行分析，并通过数值方法和实验加以证明。这种双稳态特性使折纸的展开能耗更低，同时在展开配置中获得更大的支撑刚度。此外，还研究了不同参数对动态性能的影响。此外，还提出了一种新型系统的制造方法，并通过一个物理原型进行了验证。刚弹耦合折纸闪光器促进了其在空间工程中的潜在应用。

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来源期刊

International Journal of Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.