MSC Patran/Nastran在12m天线结构分析中的应用

Application of MSC Patran/Nastran in 12m antenna structural analysis

应用MSC Patran和MSC Nastran软件对12m抛物面天线结构进行了有限元建模及仿真分析,得出了天线在不同俯仰角时最佳拟合抛物面的面板法向均方根误差,并运用数字近景摄影测量系统获得了对应俯仰角时反射面实际法向均方根误差,通过对仿真分析结果和测量结果的进行比较和分析,肯定了有限元仿真对天线结构设计的指导作用。

Analyze 12m antenna structural based on MSC.PATRAN and MSC.NASTRAN software,the RMS accuracy along the normal direction of the best fit reflector surface for various elevation angles is obtained.Compare the value obtained by analysis and the real RMS accuracy obtained by digital close range photogrammetry,the guidance effect of the finite element analysis on the antenna structure design is proved.