第39卷第3期2023年6月Electro-MechanicalEngineering·结构设计·DOI:10.19659/j.issn.1008–5300.2023.03.002某车载固面可展开天线反射体结构建模与分析*梁峻铭,刘子涵,张树新(西安电子科技大学电子装备结构设计教育部重点实验室,陕西西安710071)摘要:某车载6.3m口径固面可展开天线反射体由瓜瓣面板、背架、展开机构、底座和固定面支撑梁组成。根据不同结构与可展开机构部件的特点,建立了天线反射体有限元模型,开展了模态分析、自重载荷力学分析和风力载荷分析。仿真结果有效揭示了天线反射体模态与型面精度的变化情况,指出了可展开特性带来的反射体周向刚度较弱的问题,可为后续的结构设计与机构集成提供指导。关键词:可展开天线反射体;展开机构;有限元建模;面板;结构分析中图分类号:TN82文献标识码:A文章编号:1008–5300(2023)03–0006–05StructuralModelingandAnalysisofaVehicle-borneSolidDeployableReflectorLIANGJunming,LIUZihan,ZHANGShuxin(KeyLaboratoryofElectronicEquipmentStructureDesignofMinistryofEducation,XidianUniversity,Xi’an710071,China)Abstract:A6.3mvehicle-bornesoliddeployablereflectorconsistsofgorepanels,backupstructures,de-ployablemechanisms,apedestalandsupportingbeams.Accordingtothedifferentpropertiesofstructuralcomponentsanddeployablemechanisms,thefiniteelementmethod(FEM)modelofthedeployablereflectorisestablished.Themodalanalysis,structuralanalysiswithgravityloadandwindloadanalysisareperformed.Thevariationsofmodaldisplacementandsurfaceaccuracyarerevealedbythesimulationresults.Asignificantconclusionisobtainedthatthestiffnessalongthecircumferentialdirectionisnotstrongduetotheintroductionofdeployablemechanisms,whichcanprovideaguidelineforthesubsequentstructuraldesignandmechanismintegration.Keywords:deployablereflector;deployablemechanism;FEMmodeling;panel;structuralanalysis引言车载天线具有机动性高、可随车灵活转移的特点[1]。随着天线遥测任务的逐渐扩展,对大口径车载天线的需求日益迫切,尤其是可快速布置与收藏的可展开天线,成为大口径车载天线的主要应用对象[2]。为了兼顾天线的机动性与高增益性能,固面可展开天线成为车载可展开天线的研究热点[2–3]。固面可展开天线在星载天线领域的应用最为成熟,通常有太阳花式...