Coupling between structural deformation and attitude motion of large planar space structures suspended by multi-tethers
Coupling between structural deformation and attitude motion of large planar space structures suspended by multi-tethers
复制标题
DOI：
10.1016/j.actaastro.2006.10.002
复制
发表时间：
2007-04
影响因子：
3.5
通讯作者：
K. Ishimura;K. Higuchi
中科院分区：
文献类型：
--
作者：
K. Ishimura;K. Higuchi
由多根系绳悬挂的平面空间结构是一种大型轻质结构。对于这样的柔性结构，必须考虑结构变形与姿态运动之间的耦合现象。本文研究了平面多绳悬挂结构的动力特性。仿真结果表明，低系绳刚度发生耦合。此外，它示出的耦合也可以发生，如果一些系绳变得松弛。平面结构的热变形是系绳松弛的原因之一。热变形和诱导的姿态运动也进行了研究。结果表明，滚动和偏航运动变得不稳定，由于热变形。最后，为了减小整体热变形，对子板间的连接条件进行了修改，并证实了修改后的连接条件可以抑制大变形。
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.