| 2 m级SiC轻量化主镜的边缘切向剪切支撑设计与优化 |
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| 引用本文： | 高则超,王富国,丁良,魏梦琦,王瑞.2 m级SiC轻量化主镜的边缘切向剪切支撑设计与优化[J].科学技术与工程,2018,18(27). |
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| 作者姓名： | 高则超 王富国 丁良 魏梦琦 王瑞 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所;中国科学院大学 |
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| 基金项目： | 国家自然科学基金项目（11673080） |
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| 摘 要： | 基于2m口径望远镜工程化应用的需求,在轴向支撑采用18点Whiffletree结构的基础上,展开对大口径侧向支撑方案的设计与优化,达到理想支撑效果的目的。针对一个直径2030 mm的轻量化主镜,采用12个边缘离散支撑点;运用侧向均匀承重支撑思想选择支撑点的位置;引用修正的边缘切向剪切支撑公式优化支撑力的角度;并进行敏感性分析。结果表明:镜面变形为23.15nm;系统一阶模态为12.6Hz。可见该设计方案满足2m级SiC轻量化主镜的支撑要求。
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| 关 键 词： | 侧向支撑 均匀承重 边缘切向剪切 轻量化主镜 |
| 收稿时间： | 2018/4/27 0:00:00 |
| 修稿时间： | 2018/6/5 0:00:00 |
Design and Optimization of Edge Tangential shear Support on 2 m SiC Lightweight Primary Mirror |
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| gaozechao,dingliang,weimengqi and wangrui.Design and Optimization of Edge Tangential shear Support on 2 m SiC Lightweight Primary Mirror[J].Science Technology and Engineering,2018,18(27). |
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| Authors: | gaozechao dingliang weimengqi and wangrui |
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| Institution: | Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,,Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun Institude of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences |
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| Abstract: | In order to the requirement of engineering application of 2 m telescope,on the basis of 18 point Whiffletree structure used in axial support,for the purpose of ideal support result,the design and optimization of lateral support on large telescope mirrors was carried out. Based on a primary mirror with a diameter of 2 030mm, the experiment used 12 edge discrete support points;utilized the thought of uniform weight bearing to choose the position of the support point;used the formula of edge tangential shear to optimize the angle of support force;and carry out sensitivity analysis.The results show that mirror deformation is 23.15 nm;the resonant frequency is 12.6 Hz. It is concluded that the design meets the support requirements of the 2 m SiC lightweight primary mirror. |
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| Keywords: | lateral support uniform weight bearing edge tangential shear lightweight primary mirror |
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