2019 Fiscal Year Final Research Report
Elemental technology research for seamless development of the large deployment structures with shape-variable function in the ground and the space
| Project/Area Number |
17K18924
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Architecture, Building engineering, and related fields
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| Research Institution | Kobe University |
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Principal Investigator |
Mukai Yoichi 神戸大学, 工学研究科, 准教授 (70252616)
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| Co-Investigator(Kenkyū-buntansha) |
勝又 暢久 室蘭工業大学, 大学院工学研究科, 助教 (60534948)
上田 政人 日本大学, 理工学部, 准教授 (80434116)
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| Project Period (FY) |
2017-06-30 – 2020-03-31
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| Keywords | 展開板構造 / 展開挙動解析 / 面外衝撃荷重作用 / FEM解析 / 超小型衛星 / 宇宙構造 / 局所可撓性 / 4Dプリント |
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| Outline of Final Research Achievements |
structural construction technology with foldable and deployable mechanisms. Firstly, an improved-type hinge mechanism model is proposed for civil engineering structures. This model is designed to avoid a conflict between panels during motions to change its configurations. Foldable and deployable performance and an out-of-plane action of panels are evaluated through numerical simulations. Secondly, a novel folding mechanism that has slanting folding-line by cutting a panel-edge is proposed for aerospace structures. Visualization of expansion of folded structures and mechanism analyses to expand in outer space are conducted. Thirdly, a 4D-printing method, which is developed as a novel printing process using carbon fiber reinforced plastic (CFRP), is introduced to a joint between the rigid panel and flexible hinge. Deformability and durability of the flexible hinge are examined during deploying motions.
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| Free Research Field |
建築構造工学
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| Academic Significance and Societal Importance of the Research Achievements |
折紙の手法は，様々な工業製品の製作技術への応用技法として，世界的にも期待されている．しかしながら、厚みのないシートで可能な造形手法を厚みのあるプレート造形に応用するには、折込時に重なり合う面同士が干渉を起こさない工夫が必要となる。そこで、厚みのあるパネルを用いたミウラ折りを成立させるために、パネル面に対して傾斜するヒンジ線を持つ機構を新たに提案し、その同期展開性、収納性について定量的に示した。さらに、展開板構造の一体形成を想定し、同一材料に局所的な柔軟性を付与する4Dプリント技術の開発を新たに進めた。展開板構造の今後の実用化のために、本研究成果は、重要な貢献と意義と持つものと考えている。
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