Deployment analysis for space cable net structures with varying topologies and parameters
Deployment analysis for space cable net structures with varying topologies and parameters
复制标题
不同拓扑和参数的空间电缆网结构的部署分析
DOI：
10.1016/j.ast.2017.05.008
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发表时间：
2017-09
影响因子：
5.6
通讯作者：
方永刚
中科院分区：
文献类型：
--
作者：
聂锐;何柏岩;张连洪;方永刚
索网结构是空间可展开装置中广泛应用的结构形式。对于桁架-网状反射面天线，索网在展开过程中从松弛状态转变为完全张紧状态，形成所需的功能面。索网结构的展开分析是索网结构展开力计算不可缺少的环节，同时也为索网结构的设计提供了有价值的参考。但遗憾的是，目前还没有一种有效的方法来分析空间索网结构在不同拓扑和参数下的展开过程。提出了考虑几何非线性、拓扑多样性和索垂度的空间索网结构参数化展开分析方法。首先，将索网离散为有限个索单元，并提出编号规则，得到相应的拓扑矩阵。然后，建立控制方程组，并利用矩阵变换理论进一步组合控制方程组，采用信赖域算法求解系统方程。在计算过程中，索的刚度由索的松弛或张拉状态决定，桁架的展开与索网的变形之间的耦合通过在每一时间步更新边界节点的坐标值来考虑。我们使用我们的方法分析了三个案例研究，结果与实验数据在以前的文献中。计算了索网在展开过程中的弹性能，讨论了索网的“自张”过程。本研究中的展开分析对于用于网状反射面天线的空间索网结构是通用的。
Cable net structures are widely used in space deployable devices. For truss-mesh reflector antennas, the cable net turns from a relaxed stage to a full tensioned state and forms a required functional surface during the deployment process. The deployment analysis of cable net structures is indispensable to the calculation of the deploying force, and meanwhile, it also provides valuable references for the cable net design. But unfortunately, at present there is still no effective way to analyze the deployment process of space cable net structures with varying topologies and parameters. In this paper, the parameterized deployment analysis for space cable net structures considering geometric nonlinearity, topological diversity and the cable's sag is presented. Firstly, the cable net is discretized into finite cable elements, and serial numbering rule is proposed to obtain the corresponding topological matrix. Then, governing equations are formulated and further assembled by matrix transformation theory, and trust-region algorithm is used to solve the system equations. In the calculating, the cable's stiffness is determined by its slack or tensional state, and the coupling between the deployment of trusses and the deformation of cable nets are considered by updating the coordinate values of boundary nodes in each time step. We use our method to analyze three case studies and the results agree with experiment data in previous literature. The elastic energies of cable nets during the deployment are calculated and the “self-stretching” process is discussed. The deployment analysis in this research is general for space cable net structures used in mesh reflector antennas.
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DOI：
--
发表时间：
2009
期刊：
Journal of National University of Defense Technology
影响因子：
--
作者：
Zhang Qing-bin
通讯作者：
Zhang Qing-bin
DOI：
--
发表时间：
1992-08
期刊：
--
影响因子：
--
作者：
A. Flechais;P. Picard;C. Dauviau;C. Truchi
通讯作者：
A. Flechais;P. Picard;C. Dauviau;C. Truchi
DOI：
10.2514/6.2002-2032
发表时间：
2002-05
期刊：
--
影响因子：
--
作者：
M. Thomson;Trw Astro
通讯作者：
M. Thomson;Trw Astro
影响因子：
--
作者：
A. Tibert;S. Pellegrino
通讯作者：
A. Tibert;S. Pellegrino
影响因子：
2.6
作者：
Euisok Kim;S. Vadali
通讯作者：
Euisok Kim;S. Vadali