Coupling between structural deformation and attitude motion of large planar space structures suspended by multi-tethers |
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| Institution: | 1. Graduate School of Information Science and Technology, Hokkaido University, N14-W9, Sapporo 060-0814, Japan;2. Institute of Space and Astronautical Science/Japan Aerospace Exploration Agency (ISAS/JAXA), 3-1-1 Yoshinodai, Sagamihara 229-8510, Japan;1. Department of Engineering Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, 2 Linggong Road, Ganjingzi District, Dalian, Liaoning, 116024, PR China;2. Dongfeng Peugeot–Citroen Automobile Company LTD, No. 165. Shenlong road, Economic Development Zone, Wuhan, PR China;1. School of Astronautics, Harbin Institute of Technology, PO Box 137, Harbin 150001, China;2. College of Mechanical Engineering, Beijing Information Science and Technology University, Beijing 100000, China;1. Lomonosov Moscow State University (MSU), Faculty of Mechanics and Mathematics, 119991, Main Building, GSP-1, 1 Leninskiye Gory, Moscow, Russia;2. Federal Science Center Scientific Research Institute for System Analysis of the Russian Academy of Sciences, Moscow, 117218, 36-1 Nakhimovskiy pr, Russia;3. Bauman Moscow State Technical University, Mytischi branch, 1st Institutskaya street, 1, 141005, Mytischi, Moscow region, Russia |
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| Abstract: | A planar space structure suspended by multi-tethers is one candidate for large and lightweight structures. For such flexible structures, coupling phenomena between structural deformation and attitude motion must be considered. In the present paper, the dynamic characteristics of a planar structure suspended by multi-tethers are investigated. Simulation results reveal that the coupling occurs for low tether stiffness. In addition, it is shown that the coupling can also occur if a number of the tethers become slack. Thermal deformation of the planar structure is one cause of tether slack. Thermal deformation and the induced attitude motion are also investigated. It is shown that roll and yaw motions become unstable due to thermal deformation. Finally, we modify the condition of the connection between sub-panels in order to reduce the overall thermal deformation, and it is confirmed that large deformation can be inhibited by the modification. |
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