厚刚性可折叠折纸超材料的模块化制造与设计
Modular fabrication and design of thick rigid-foldable origami metamaterials
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中文总结 AI 辅助
针对厚面板折纸超材料制造中几何干涉与运动学受损问题，提出模块化制造框架，结合拓扑优化实现单自由度刚性折叠，验证了其可扩展性与承重能力，为大型可展开超材料制造提供了可行方案。
中文摘要 AI 辅助
折纸超材料在刚性可展开结构领域具有巨大应用潜力，但用厚面板制造承重蜂窝结构时，非流形节点处会出现几何干涉，传统厚面板制造常破坏理想运动学特性，导致平滑运动与可扩展性受损。本研究提出一种模块化制造框架，可在厚板与非流形折纸超材料中保留单自由度刚性折叠运动学特性。通过将非流形节点分解为堆叠的模块化铰接面板层级结构，该方法利用剪刀式连杆成功适配同步铰链运动；基于此表示，我们实现了基于图的拓扑优化框架，可在保留折叠连通性的同时定制宏观刚度。我们通过制造优化后的原型验证了该方法，其可通过单自由度运动实现无缝展开；此外，我们通过大规模构建由模块化面板组装而成的可展开系统验证了工程可扩展性，该系统具备高承重能力。这些结果为结构类、大型可展开超材料的实际制造铺平了道路。
英文摘要
Origami metamaterials offer significant potential for stiff deployable structures However, fabricating load-bearing cellular structures from thick panels introduces geometric interference at non-manifold junctions. Conventional thick-panel fabrication often disrupt ideal kinematics, thereby compromising smooth motion and scalability. This study proposes a modular fabrication framework that preserves one-degree-of-freedom rigid-folding kinematics in thick and non-manifold origami metamaterials. By decomposing non-manifold junctions into a hierarchy of stacked, modular hinged panels, our approach successfully accommodates synchronized hinge motions using scissor-like linkages. Exploiting this representation, we implement a graph-based topology optimization framework that tailors macroscopic stiffness while preserving folding connectivity. We demonstrate this approach by fabricating optimized prototypes that deploy seamlessly with a one-degree-of-freedom motion. Furthermore, we demonstrate engineering scalability through the large-scale construction of extensive deployable systems assembled from modular panels, which exhibit high load-bearing capacity. These results pave the way for the practical fabrication of structural, large-scale deployable metamaterials.
