在轨装配小卫星结构振动特性分析  

Analysis of Dynamic Characteristics of Micro Satellite Assembled in Orbit

作　　者：冯砚博 施伟璜[2] 王智磊[2] 赵强[2] 杨玉恒 张泽华 冯浩龙 FENG Yanbo;SHI Weihuang;WANG Zhilei;ZHAO Qiang;YANG Yuheng;ZHANG Zehua;FENG Haolong(School of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China;Shanghai Satellite Engineering Institute,Shanghai 200240,China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001 [2]上海卫星工程研究所,上海200240

出　　处：《载人航天》2021年第6期742-747,共6页Manned Spaceflight

基　　金：国家自然科学基金面上项目(11772185)。

摘　　要：针对在轨装配卫星的结构动力学要求,提出基于固有模态的卫星本体结构动力学特性快速分析与辨识方法。建立了小型卫星基体动力学模型,并结合有限元计算对框架式模块化结构和多层平台堆栈式的刚度特性比较分析。结果表明,在30 kg量级上框架式本体结构布局具有更高的基频,可靠性和稳定性更好,功能也更加灵活,具有更好的适应性。According to the structural dynamics requirements of the small satellite assembled in or-bit,a fast analysis and identification method for the dynamic characteristics of the satellite body structure based on natural modes was proposed.Dynamic models of the small satellite frame bodies were established and the stiffness characteristics of the frame-type modular structure and the multilayer platform stack structure were compared and analyzed on the basis of finite element calculation.The results showed that the frame-type body structure layout had a higher fundamental frequency and better system reliability and stability on the order of 30kg.Moreover,it was more flexible and adaptable in function.

关 键 词：在轨装配 小卫星结构动力学 框架梁式布局 多层平台堆栈式 可靠性 

分 类 号：V57[航空宇航科学与技术—航空宇航推进理论与工程]