中国空间科学技术2024，Vol.44Issue(3)：136-145,10.DOI:10.16708/j.cnki.1000-758X.2024.0047
基于力密度的径向肋式索膜反射面天线形态设计
Form-finding design of radial rib cable membrane reflector antenna based on force density method
摘要
Abstract
Aiming at the initial form-finding design of space cable membrane structure,an iterative strategy of antenna form-finding for boundary cable tension design and cable net shape design is proposed based on the force density method and the method of controlling the grid area.Firstly,the membrane reflector is discretized into triangular membrane elements to obtain the equivalent effective density of membrane elements.Combined with the structural characteristics of cable net,the static equilibrium equation of cable net and membrane is obtained.The tension of all internal cable segments of the cable network is equal,and the tension design of boundary cable segments is realized by controlling the size of grid area.In order to design the shape of the front cable net,according to the paraboloid equation of the front cable net,the free node coordinates of the front cable network are updated,the vertical cable tension is readjusted,and the grid area is controlled.Finally,the shape design of the antenna is realized through the iterative process.The example of radial rib cable membrane reflector antenna shows that this method can obtain the design results that meet the shape requirements and tension distribution.关键词
空间薄膜结构/力密度方法/网格面积/膜单元/形态设计/径向肋式索膜反射面天线Key words
space membrane structure/force density method/grid area/membrane element/form-finding/radial rib cable membrane reflector antenna分类
航空航天引用本文复制引用
杜雪林,张康,张瑞翔,刘安民,夏杰,张洪,涂宇..基于力密度的径向肋式索膜反射面天线形态设计[J].中国空间科学技术,2024,44(3):136-145,10.基金项目
湖南省自然科学基金面上项目(2021JJ30467) （2021JJ30467）
湖南省自然科学基金(2023JJ50099,2022JJ50151) （2023JJ50099,2022JJ50151）
湖南省大学生创新训练项目(S202311528153,S202311528119) （S202311528153,S202311528119）
湖南省教育厅科学研究重点项目(22A0693,21A0608) （22A0693,21A0608）
