中国空间科学技术2024，Vol.44Issue(2)：68-73,6.DOI:10.16708/j.cnki.1000-758X.2024.0023
空间可展开天线模态测试与模型修正技术
Modal testing and model updating of space deployable antenna
摘要
Abstract
In order to accurately predict the mechanical properties of the structure and accurately approximate the test results of the simulation,the finite element model must be corrected.In this paper,the modal test of the 3 m deployable antenna prototype was carried out,and the natural frequencies and vibration model shapes of the structure were obtained under the free state of the prototype.In view of the characteristics of the flexible and complex structure modal parameters of the deployable antenna,which are difficult to identify and there are many parameters to be corrected,the modified parameters were selected in a targeted manner.The finite element model was corrected by using the model correction method based on the sensitivity type of design parameters,the error between the prototype and the simulated natural frequency and mode shape was reduced,a modal test process and a model correction method containing the cable-net structure were obtained.关键词
模态测试/网状结构/可展开天线/灵敏度分析/模型修正Key words
modal test/cable-membrane structure/deployable antenna/sensitivity analysis/model updating分类
航空航天引用本文复制引用
任志威,杜敬利,王飞杰..空间可展开天线模态测试与模型修正技术[J].中国空间科学技术,2024,44(2):68-73,6.基金项目
国家自然科学基金(51675398) （51675398）
