空间可展开天线铰链热变形分析与试验验证  

Thermal deformation analysis and experimental verification of spatial deployable antenna hinge

作　　者：杨智杰 张从发[2] 赵瑞杰 王春洁[3] 赵军鹏[1] YANG Zhijie;ZHANG Congfa;ZHAO Ruijie;WANG Chunjie;ZHAO Junpeng(School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;State Key Laboratory of Virtual Reality and Systems,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]北京空间飞行器总体设计部,北京100094 [3]北京航空航天大学虚拟现实技术与系统国家重点实验室,北京100191

出　　处：《北京航空航天大学学报》2024年第1期243-249,共7页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(51635002)。

摘　　要：在轨热变形是影响空间可展开天线精度的关键因素之一,因此,空间可展开天线结构的在轨热变形分析具有十分重要的意义。随着空间探测任务要求的不断提高,铰链热变形对空间可展开天线指向精度的影响已经不可忽略。以某空间可展开天线的根部铰链和臂间铰链为研究对象,建立其有限元模型,计算铰链主弯方向和侧弯方向在温度每变化10℃时相对角度的变化。基于高低温箱和电子经纬仪构建铰链精度测试系统,开展铰链热变形试验。试验结果表明:根部铰链和臂间铰链在主弯方向和侧弯方向呈现纯结构热变形特性,仿真结果与试验分析结果基本一致,验证有限元模型和试验分析方法的正确性。根据铰链主弯和侧弯方向角度相对变化,评估热变形对铰链变形的影响。该建模和试验分析方法可为同类型空间可展开天线设计、分析和优化及类似可展开机构精度影响因素的分析提供参考。The in-orbit thermal deformation analysis of space-deployable antennae is very important because it is one of the major factors impacting the accuracy of these antennae.With the increasing requirements of space exploration missions,the influence of hinge thermal deformation on the pointing accuracy of space-deployable antennae cannot be ignored.In order to calculate the relative angle changes of the main bending direction and side bending direction of the hinges with each temperature change of 10℃,a finite element model of the root and arm hinges of a spatial deployable antennae was established.The hinge precision test system was constructed based on the high and low-temperature chamber and electronic theodolite,and the hinge thermal deformation test was carried out.The experimental results show that the root hinge and the interarm hinge exhibit pure structural thermal deformation characteristics in the main and side bending directions.The simulation results are basically consistent with the experimental results,which verify the validity of the finite element model and experimental analysis method.According to the relative Angle changes of the main and side bending directions of the hinge,the effect of thermal deformation on hinge deformation was assessed.The modeling and experimental analysis method can provide a reference for the design,analysis,and optimization of deployable antennas in the same space and the analysis of the factors affecting the accuracy of similar deployable mechanisms.

关 键 词：可展开天线 有限元分析 铰链 热变形 高低温环境 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]