空间薄膜天线索膜结构建模与形状优化  

Cable-membrane modeling and shape optimization of the space membrane antenna

作　　者：曹鹏 保宏[1] 杜敬利[1] 彭福军 CAO Peng;BAO Hong;DU Jingli;ENG Fujun(Ministry of Education Key Lab.of Electronic Equipment Structure,Xidian Univ.,Xi'an 710071;Acrospacc Systems Engineering Shanghai,Shanghai 201108,China)

机构地区：[1]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 [2]上海宇航系统工程研究所,上海 201108

出　　处：《西安电子科技大学学报》2018年第2期54-58,65,共6页Journal of Xidian University

基　　金：国家自然科学基金重大计划资助项目(51490660);国家自然科学基金资助项目(51675398);上海航天创新基金资助项目(SAST201413)

摘　　要：针对空间平面薄膜天线,提出一种索膜边界建模及形状优化方法.首先,基于索膜结构在受张力作用时边界处悬索与薄膜存在滑动的特点,提出一种非线性有限元建模方法;其次,将索膜边界视为B样条曲线,并以曲线控制点位移作为设计变量,通过优化结构实际应力与工程参考应力间的偏差,实现了对薄膜在任意初始边界下的形状优化;最后,通过数值算例与实验验证说明了方法的有效性.A method about boundary modeling and shape optimization of the cablc-mcmbranc structure in the space planar membrane antenna is proposed.First,based on the characteristics of sliding between the cable and the membrane when the structure is tensioned,a method of the nonlinear finite element modeling is proposed.Second,the boundary of the cablc-mcmbranc structure is modeled by B-splinc curves,and the design variables arc displacements of the control points of the curve for this optimization problem.The shape optimization of the membrane with an arbitrary initial boundary is realized by optimizing the deviation between the actual stress and the engineering reference stress.Finally,the effectiveness of the proposed methods arc illustrated by numerical examples and experimental verification.

关 键 词：平面薄膜天线 边界非线性建模 形状优化 数值算例 实验验证 

分 类 号：TN957.2[电子电信—信号与信息处理]