比辐射星上定标器结构设计及有限元分析  

Design and Finite Element Analysis of Ratioing Radiance Calibrator on Board

作　　者：徐骏[1] 杨本永[1] 李平付[1] 郑小兵[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室,安徽合肥230031

出　　处：《机械设计与制造》2013年第5期36-39,共4页Machinery Design & Manufacture

基　　金：国家高技术研究发展计划(863);遥感卫星定标技术研究(2008AA121203)

摘　　要：比辐射星上定标器是一种新型的遥感卫星在轨辐射定标装置,其结构设计的可靠性将直接决定星上光学系统的定标精度。为了得到星上定标器结构在航天力学条件下的响应情况,用ANSYS Workbench对其加速度过载和随机振动响应特性进行了有限元分析,获得了定标器箱体的加速度过载响应特性、固有频率和振型、随机振动响应特性。分析结果表明,定标器箱体在航天力学条件下强度和刚度都满足设计要求。为后期振动试验和结构优化设计提供了定量化参考依据。Ratioing radiance calibrator is a new device to calibrate the radiance of remote-sensing satellite on board.The reliability of its structure design determines the calibration precision of the optical system on board.In order to acquire the response of the calibrator against the space mechanics environment stimulus,the acceleration overload and random vibration were calculated and analyzed by finite elements software ANSYS Workbench.Response values include natural frequency and modal shape,response of acceleration overload and random vibration.The results indicate that the calibrator satisfy the request of design,both in strength and stiffness.It also provides the quantitative reference for vibration experiment and structure design and optimizing.

关 键 词：星上定标器 结构设计 有限元 力学分析 

分 类 号：TH16[机械工程—机械制造及自动化] TL822.1[核科学技术—核技术及应用]