| FAST背架样机刚度实验分析 |
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| 引用本文： | 赵清,王启明.FAST背架样机刚度实验分析[J].科学技术与工程,2009,9(15). |
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| 作者姓名： | 赵清 王启明 |
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| 作者单位： | 1. 中国科学院国家天文台,北京,100012;中国科学院研究生院,北京,100049
2. 中国科学院国家天文台,北京,100012 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 五百米口径球面射电望远镜(Five hundred meter Aperture Spherical radio Telescope, FAST)将会成为世界上最大的单口径射电望远镜.FAST有三个创新性的工程概念,其中之一就是提出了主动反射面的概念.背架结构是反射面单元中连接主索网和面板的支撑结构.三种方案的背架结构样机已经设计和制造出来:单层弦支结构、单层网架结构和空间三角锥网架结构.三种样机的刚度实验,分别进行了不同背架结构在相同外力荷载下的实验位移变形比较,背架结构在外力荷载下位移变形的实验值和仿真值比较,以及在不同温度荷载下位移变形的比较.实验得到了背架样机的刚度特性,验证了仿真的设计和优化,也对FAST 背架原型设计提供了参考.
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| 关 键 词： | 主动反射面 背架结构 样机实验 刚度分析 |
Stiffness Experiment on Prototype Back-structure of FAST |
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| ZHAO Qing,WANG Qi-ming.Stiffness Experiment on Prototype Back-structure of FAST[J].Science Technology and Engineering,2009,9(15). |
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| Authors: | ZHAO Qing WANG Qi-ming |
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| Institution: | National Astronomical Observatories;CAS1;Beijing 100012;P.R.China;Graduate University of Chinese Academy of Sciences2;Beijing 100049;P.R.China |
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| Abstract: | Five hundred meter Aperture Spherical radio Telescope(FAST) will be the largest radio telescope in the world which has three innovative engineering concepts. One of them is the active main reflector. Back-structure is the connection between panel and cable mesh of the reflector,which is significant of the entire FAST project. Three prototype back-structures have been designed and manufactured. They are cable supporting single-layer structure,single-layer grids structure and triangular pyramid structure. Sti... |
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| Keywords: | FAST |
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