望远镜系统的结构设计及有限元分析  

Finite Element Analysis of R-C Telescope System

作　　者：秦琴[1] 顾永杰[1] 陶津平[2] 

机构地区：[1]上海第二工业大学电子与电气工程学院,上海201209 [2]中国科学院上海技术物理研究所,上海200083

出　　处：《光电工程》2008年第6期130-134,共5页Opto-Electronic Engineering

基　　金：中国科学院上海技术物理研究所创新资助项目(070715)

摘　　要：本文对R-C望远镜系统的结构作了深入的研究,完成R-C望远镜系统的结构设计,并对整体结构进行有限元分析。通过模态分析得到总体结构的第一阶频率为183.39Hz,高于系统要求的100Hz,在热分析中得到因温度变化导致主、次镜同轴度的偏差为1.15μm,也小于光学要求值0.01mm。望远镜系统实物的实测结果与仿真结果基本相符,验证了R-C望远镜系统结构设计的合理性。The structural design of the R-C telescope system is researched. We utilized finite element analysis in the whole structure of R-C telescope system. Finite element analysis results of modal analysis indicate that the first natural frequency of the telescope is 183.39 Hz, which is higher than 100Hz requested by the system. Finite element analysis results of the telescope with temperature load indicate that the coaxial degree of primary-mirror and sub-mirror is 1.15 μm, which is less than 0.01 mm requested by the system. The theoretical results are coincident with experimental ones, which validates the rationality of the R-C telescope＇s structure.

关 键 词：R-C望远镜系统 有限元分析 探测仪 

分 类 号：TU318[建筑科学—结构工程] TH743[机械工程—光学工程]