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工程力学  2013 

巨型射电望远镜索网结构的优化分析与设计

DOI: 10.6052/j.issn.1000-4750.2011.09.0578, PP. 400-405

Keywords: FAST工程,索网结构,主动反射面,力学分析,有限元

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Abstract:

500m口径射电望远镜(FAST)主要以短程线索网作为反射面支承结构。该文通过对三种短程线分型的索网进行对比分析,建议五轴对称分型方法作为优先选择索网分型方案。同时,该文的优化设计工作进一步减少了主索网与圈梁连接节点的种类及数量,并使索网能满足馈源仓检修升级功能。在此基础上,针对现有两种反射面单元自重情况,优化了索网截面和内力水平,讨论了下拉索节点位置精度对索网变位精度的影响,量化了索网变位过程中主索节点的侧偏量。

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