拉杆式压弯聚焦镜组件线性与接触非线性方法的比较

吕清涛; 薛 松; 彭忠琦; 祝万钱; 傅 远

doi:10.3788/OPE.20101808.1842

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拉杆式压弯聚焦镜组件线性与接触非线性方法的比较

微纳技术与精密机械 | 更新时间：2020-08-12

- 拉杆式压弯聚焦镜组件线性与接触非线性方法的比较
- Comparison on linear and contact nonlinear analysis methods of pull-rod bent focusing mirror assembly
- 光学精密工程 2010年18卷第8期页码：1842-1848
- 作者机构：
  
  1. 中国科学院上海应用物理研究所上海,201800
  2. 中国科学院长春光学精密机械及物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
  
  应用光学国家重点实验室开放基金资助项目(37730301)
- DOI：10.3788/OPE.20101808.1842
  中图分类号： TB24;TH703
- 收稿日期：2009-11-06，
  
  修回日期：2010-01-18，
  
  网络出版日期：2010-08-20，
  
  纸质出版日期：2010-08-20
- 稿件说明：
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吕清涛, 薛松, 彭忠琦, 祝万钱, 傅远. 拉杆式压弯聚焦镜组件线性与接触非线性方法的比较[J]. 光学精密工程, 2010,18(8): 1842-1848

LV Qing-tao, XUE Song, PENG Zhong-qi, ZHU Wan-qian, FU Yuan. Comparison on linear and contact nonlinear analysis methods of pull-rod bent focusing mirror assembly[J]. 光学精密工程, 2010,18(8): 1842-1848
吕清涛, 薛松, 彭忠琦, 祝万钱, 傅远. 拉杆式压弯聚焦镜组件线性与接触非线性方法的比较[J]. 光学精密工程, 2010,18(8): 1842-1848 DOI： 10.3788/OPE.20101808.1842.

LV Qing-tao, XUE Song, PENG Zhong-qi, ZHU Wan-qian, FU Yuan. Comparison on linear and contact nonlinear analysis methods of pull-rod bent focusing mirror assembly[J]. 光学精密工程, 2010,18(8): 1842-1848 DOI： 10.3788/OPE.20101808.1842.

摘要

在压弯聚焦镜的工程分析中

采用接触非线性分析方法分析某些关键部位可提高分析精度

比以往只用线性分析得出的结果更接近实际情况。针对用线性分析方法分析所研究的对象求解误差较大

本文分析了系统产生非线性的主要因素。对某压弯聚焦镜组件进行了有限元建模

采用接触非线性分析方法对拉杆被拉弯时聚焦镜的响应进行了分析。对比非线性分析和检测结果可知

当压弯的矢高相等时

检测结果和非线性分析的斜率和半径误差在0.4 rad和5 km范围内

基本满足要求。对比线性分析、非线性分析的结果和实验数据表明:采用非线性分析的结果更接近实际情况

完全可在误差允许的范围内模拟压弯机构的实际压弯情况。

Abstract

For analysis on pull-rod bent focusing mirror assemblies in engineering

the accurate results can be obtained by a contact nonlinear method rather than a linear analysis. As analysis of a nonlinear system by linear method shows a bigger error

this paper researches the causes of errors. A pull-rod bent focusing mirror assembly is simulated by the finite element method

then the contact nonlinear analysis method is introduced to analyze the response of focusing mirror when its pull-rod is bended. In comparison of the nonlinear analysis results with detection results

it is pointed out that the errors between them on scope and radius are 4 rad and 5 km when the bent vector height of focusing mirror is a constant

which can meet the requirements of engineering. Finally

the tested results of the bent focusing mirror from linear analysis

nonlinear analysis and detection are compared

which indicates that the nonlinear analysis is closer to a real system in engineering analysis and suits to simulate the real conditions at the scope of limited errors.

关键词

Keywords

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