Stepwise Deployments of Membrane Structure with Rolled-up Braided CFRP Bi-Convex Booms
| Autor: | Michihiro Natori, Hiroshi Yamakawa, Akihito Watanabe, Nobukatsu Okuizumi, Hiroyuki Ikuta, Shinya Hakata |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
020301 aerospace & aeronautics
business.industry Three point flexural test 02 engineering and technology Structural engineering 01 natural sciences Boom Vibration 0203 mechanical engineering Buckling Software deployment Woven fabric 0103 physical sciences Braid Spiral (railway) business 010303 astronomy & astrophysics Geology |
| Zdroj: | 3rd AIAA Spacecraft Structures Conference. |
| DOI: | 10.2514/6.2016-1471 |
| Popis: | Stepwise deployments of a membrane structure with rolled-up booms have been investigated. The boom consists of two bi-convex tapes covered by a braid sleeve. The boom can be smoothly rolled up and unrolled by elastic deformation. In this paper, new lightweight booms consists of tri-axial woven fabric CFRP convex tapes with 800 millimeter long are introduced to reduce the weight and to enlarge the structure. First of all, in order to study the mechanical properties of the boom, three point bending test and vibration test of are carried out. Then deployment experiments of four booms rolled-up around a central hub are conducted to confirm that the booms can be fully deployed under gravity. Subsequently, deployment experiments of the booms with a square membrane folded by the modified spiral folding are conducted. To prevent lateral buckling of the booms due to the weight of the membrane, a simple gravity compensation method using suspension strings is devised. Deployment experiments of several deployment patterns are successfully performed and the effects of the stepwise deployments are clearly demonstrated. Finally, numerical model of the structure is created by employing the multi-particle approximation method and stepwise deployment simulations are conducted. |
| Databáze: | OpenAIRE |
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