空间可展开薄膜结构的缠绕折叠模式与运动过程研究

Research on WRAPPING-BASED FOLDING FOR DEPLOYABLE MEMBRANE STRUCTURES: FROM PATTERN DESIGN TO KINEMATIC ANALYSIS

  • 摘要: 为满足空间薄膜结构大收纳比、高可靠性的工程需求,本文提出了一种基于折纸的缠绕折叠方案,以“叶出”与“叶入”两种仿生单元为基础,通过组合其连接方式、折痕形式与几何参数,构建了一个包含多种新型缠绕折叠模式的拓扑构型库。进而,针对一种典型构型,采用机构学理论解析了其理想运动学路径,并以此为驱动进行了显式动力学有限元仿真。结果证实:该方案能实现有序、稳定的准静态缠绕折叠,并将应变能高度集中于预设折痕,确保了主体膜面的低应力状态,从而验证了其工程可行性。本研究工作建立了集拓扑设计、运动学分析与动力学验证于一体的评估方法,为高性能缠绕折叠薄膜结构的设计提供了理论支撑与技术路径。

     

    Abstract: To meet the stringent engineering demands of high stowage ratios and of reliabilities for space membrane structures, this research presents an origami-based wrapping-folding scheme. Based on two bio-inspired units, termed "leaf-out" and "leaf-in", a library of novel topological configurations for wrapping-folding is constructed by systematically combining their connection modes, crease patterns, and geometric parameters. Furthermore, for a representative configuration, its ideal kinematic path is analytically derived using the mechanism theory and is subsequently used to drive an explicit dynamic simulation. The research results demonstrate that the proposed scheme achieves an orderly and stable quasi-static folding process. Strain energy is highly concentrated at the predefined creases, ensuring that the main membrane surfaces remain in a low-stress state, thereby validating its engineering feasibility. This work establishes an integrated evaluation methodology that combines topological design, kinematic analysis, and dynamic validation, providing a theoretical foundation and a viable technical approach for designing high-performance wrapping-folding membrane structures.

     

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