2017 Fiscal Year Final Research Report
Establishment of Prediction Method of Dynamics of Large Gossamer Multi-body Space Structures ans Understanting of Their Dynamics
| Project/Area Number |
15H04204
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 宇宙構造物 / 宇宙インフラ / 柔軟多体動力学 / 構造保存解法 / 運動予測 / 自己展開構造 |
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| Outline of Final Research Achievements |
The objectives of this research are 1) construction of fast and highly precise analysis theory of the dynamics of large gossamer multi-body (GMD) that consists of the gossamer structure such as thin membranes and cables, and the support structure such as extensible booms, 2) the establishment of the numerical prediction method of nonlinear motion, and 3) understandings of the essence of the motion. The following were completed to achieve the objectives; 1) development of the numerical code NEDA3.0 for parallel computing of large scale GMD based on structure conserving algorithm, 2) establishment of scaling law of spin-deployment membrane and its verification by micro-gravity experiment, and 3) establishment of motion prediction and the motion decomposition methods of highly nonlinear dynamic system . In the result, the design and analysis method of self-deployable membrane truss structure was presented, and the deployment experiment of its 30m scale model was achieved on the ground.
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| Free Research Field |
宇宙構造物工学
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