The Finite Element Calculation of the Axial Support of a φ220cm Primary Mirror

He Xin

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The Finite Element Calculation of the Axial Support of a φ220cm Primary Mirror

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- The Finite Element Calculation of the Axial Support of a φ220cm Primary Mirror
- Optics and Precision Engineering Vol. 0, Issue 4, Pages: 14-18(1991)
- 作者机构：
  
  中科院南京天文仪器厂
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：15 August 1991，
  
  Published：15 August 1991
- 稿件说明：
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何鑫. 一块φ220cm主镜底支承的有限元计算[J]. 光学精密工程, 1991,(4): 14-18

He Xin. The Finite Element Calculation of the Axial Support of a φ220cm Primary Mirror[J]. Editorial Office of Optics and Precision Engineering, 1991,(4): 14-18
何鑫. 一块φ220cm主镜底支承的有限元计算[J]. 光学精密工程, 1991,(4): 14-18 DOI：

He Xin. The Finite Element Calculation of the Axial Support of a φ220cm Primary Mirror[J]. Editorial Office of Optics and Precision Engineering, 1991,(4): 14-18 DOI：

摘要

本文用有限元法

对一块φ220cm的主镜气垫底支承进行了研究

优化了支承环的半径及每个支承环上的气垫数

使得最终镜面轴向相对变形控制在0.016μm以内。

Abstract

A study has been made on the pneumatic cylinder axial support system of a φ220cm primary mirror. By finite element method

the radii of the support annuli and the number of pads in each ring has been optimized. The peak-to-peak axial deformation of the mirror induced by the support system is in 0.016μm.

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