NOVEL DEVELOPABLE AND FOLDABLE STRUCTURES
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摘要: 可展与折叠结构是一类可以自由地大尺度改变几何构形的结构。它们可以从体积较小的闭合或者收缩状态变换到开启或者展开状态。相对于传统结构而言，可展与折叠结构具有建造速度快、施工方便等优点，而且便于运输和存储，可反复使用，因而在民用、军事、航天等领域被广泛应用。针对可展与折叠结构的共性问题及关键技术，采用理论分析、数值模拟、物理模型实验相结合的研究手段，对多种新型可展与折叠结构的几何构成、运动过程以及受力性能等进行了深入的研究。Abstract: The developable and foldable structure is a kind of structure which can freely change its geometric configuration on a large scale. They can change from a smaller closed or folded state to an open or deployed state. Compared with traditional structures, the developable and foldable structures have the advantages of fast construction, convenient transportation and storage, and being used repeatedly, so it is widely used in civil, military, aerospace and other fields. In view of the common problems and key technologies of deployable and foldable structures, the geometric composition, motion path and mechanical properties of various novel deployable and foldable structures were studied by theoretical analysis, numerical simulation and physical model experiments.
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图 2 上附刚性屋面板的径向开合屋盖展开过程
Figure 2. Deploying process of retractable roof with rigid panels
图 8 六单元Hoberman连杆机构展开过程仿真
Figure 8. Deploying process simulation of Hoberman linkage mechanism with six units
图 9 带重复单元的高阶无穷小机构(达芬奇结构)
Figure 9. High order infinitesimal mechanism with repeating unit (Da Vinci’s structure)
图 14 基于CP索杆单元的折叠网架静力性能
Figure 14. Static performance of deployable grid structure composed of CP units
图 17 改进滚动铰连接球面四连杆机构
Figure 17. Equivalent spherical 4R mechanism connected by improved rolling hinges
图 18 多个球面四连杆机构组成的体系及相应的折纸模型
Figure 18. Structure composed of some spherical 4R mechanisms and paper model
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