机械科学与技术2024，Vol.43Issue(4)：711-720,10.DOI:10.13433/j.cnki.1003-8728.20220282
索膜反射面可展开天线的形态设计
Form-state Design of Deployable Antenna with Cable Membrane Reflector
摘要
Abstract
In order to study the influence of the tension state of metal reflective net and cable net on the shape accuracy of deployable antenna,the form-state design of deployable antenna with cable membrane reflector is studied considering the deformation of support truss.Metal reflective net can be regarded as a kind of membrane structure,and both metal reflective net and cable net need to apply pretension to achieve a certain stiffness.Therefore,firstly the form-state design is carried out based on the force density equation of cable membrane structure to make it meet the requirement of the shape and accuracy under its own pretension and external load.The tension of cable membrane structure will lead to truss deformation,and after rebalancing,resulting in the reduction of shape accuracy of cable membrane reflector and unreasonable tension distribution.Therefore,it is necessary to establish the nonlinear finite element model for the whole antenna.By iteratively modifying the antenna model,the tension design variables and configuration of deployable antenna are obtained.The present method is programmed for a corresponding example at last,and the results indicate that the method is feasible.关键词
索膜反射面可展开天线/力密度方程/非线性有限元模型/薄膜/形态设计Key words
deployable antenna with cable membrane reflector/force density equation/nonlinear finite element model/membrane/form-state design引用本文复制引用
杜雪林..索膜反射面可展开天线的形态设计[J].机械科学与技术,2024,43(4):711-720,10.基金项目
湖南省自然科学基金面上项目(2021JJ30467,2023JJ50099) （2021JJ30467,2023JJ50099）
