激光技术2024，Vol.48Issue(2)：268-273,6.DOI:10.7510/jgjs.issn.1001-3806.2024.02.019
大口径主镜反射膜生长热应力及重力仿真
Simulation of growth thermal stress and gravity of large aperture primary mirror reflective film
何世昆 1刘中伟 1王磊 1高泽运 2范红梅2
作者信息
- 1. 山东华宇航天空间技术有限公司,烟台 264001,中国
- 2. 山东航天电子技术研究所,烟台 264001,中国
- 折叠
摘要
Abstract
In order to fully understand the distribution law of thermal stress and gravity during the coating of a large aperture primary mirror,to control the shape change of the reflecting mirror,and improve the quality of film forming,the influence of thermal stress and gravity on the shape of reflecting mirror was theoretically analyzed and studied by finite element analysis method.The results show that the reflecting film of the large aperture primary mirror is more prone to spalling and damage near the edge.During the coating process of a large aperture primary mirror,the shape change of the reflecting mirror caused by its own gravity will have a great influence on the coating quality,and gravity elimination treatment is needed.When the main mirror of 3000 mm diameter is coated by evaporation film material up or down,the support mode needs to be optimized.This study provides a reference for controlling the influence of thermal stress and gravity on the shape of the reflecting mirror when coating a large mirror.关键词
薄膜/大口径主镜/热应力/重力/面形优化Key words
thin films/large aperture primary mirror/thermal stress/gravity/shape optimization分类
物理学引用本文复制引用
何世昆,刘中伟,王磊,高泽运,范红梅..大口径主镜反射膜生长热应力及重力仿真[J].激光技术,2024,48(2):268-273,6.
