机载SAR天线稳定平台结构动态特性与动强度分析  

The Analysis on Dynamic Characteristics of the Structures of Antenna Gyro-stabilized Pplatform of an Airborne SAR

作　　者：朱金彪[1] 熊永虎[1] 叶佩青[2] 

机构地区：[1]中国科学院电子学研究所,北京100080 [2]清华大学,北京100084

出　　处：《机械设计与研究》2007年第6期94-97,共4页Machine Design And Research

摘　　要：天线稳定平台是机载SAR系统的重要分系统之一。其结构的动态特性和动强度能够满足载机安全性要求是结构设计的关键,同时,结构的动态特性还对SAR系统的成像质量产生较大影响。以天线稳定平台结构为研究对象,运用有限元软件ANSYS对其进行模态与瞬态分析,给出了不同设计方案的动态特性和动强度,为平台的系统设计及结构的优化设计打下了基础。The antenna gyro-stabilized platform of airborne synthetic aperture radar is one of most important parts. The dynamic characteristics of its structures have affects on the safety of aeroplane and the precision of SAR system. This article takes the structures of antenna gyro-stabilized platform as the research object, carries out modal and transient dynamics analysis using finite element analysis software ANSYS to obtain model nature frequencies and transient analysis result. These analysis result are very essential to the design of system and the improvement of structure.

关 键 词：天线稳定平台 ANSYS 模态分析 瞬态分析 自动接触技术 

分 类 号：TH114[机械工程—机械设计及理论]