一种环柱天线的索网结构设计与分析方法

doi:10.19665/j.issn1001-2400.2019.04.007

摘要/Abstract

摘要：

为了解决环柱天线复杂索网结构的网面和预应力设计难题,根据环柱天线结构组成确定了环柱天线索网的几何构型。考虑到索网结构中索段数目即变量个数和种类较多,将索网结构分为前、后索网两部分分别进行预应力设计。根据前索网对称特性进行变量归并,采用力密度法计算前索网预应力分布,完成部分索网节点坐标修正。根据前索网预应力由节点力平衡方程获得其余索网预应力。利用有限元软件对设计结果进行验证,仿真结果显示,采用所述方法设计的网面具有较高的精度,索网结构设计方法是有效的。

关键词: 可展开天线, 环柱天线, 索网结构, 力密度, 预应力, 结构设计

Abstract:

In order to solve the difficult problem of the design of the complex structure of the hoop/column antenna cable net and the fpretension, the geometric configuration of the hoop/column antenna cable net is calculated according to the structure of the hoop/column antenna. Considering the complexity of the design problem with too many design variables, the form-finding design of cable net structure is divided into two parts, one for the front net and the other for the rear net. First, the design variables of the front net are merged according to the symmetry of the cable net structure. Then, the pretension of the front cable net is calculated using the force density method and some nodal coordinates of the cable net are updated. Next, the pretension of the remaining cables is calculated according to the nodal force balance equations and the previously obtained pretensions. Design results are verified by finite element software. Simulation results indicate that the mesh reflector designed by the method this paper describes has a high precision and that the cable net structure design method is effective.

Key words: deployable antennas, hoop/column antenna, cable net structure, force density method, pretension, structure design

中图分类号:

V443.4

刘阳,李团结,陈聪聪,唐雅琼. 一种环柱天线的索网结构设计与分析方法[J]. 西安电子科技大学学报, 2019, 46(4): 43-48.

LIU Yang,LI Tuanjie,CHEN Congcong,TANG Yaqiong. Method for design and analysis of the cable net structure for a hoop/column antenna[J]. Journal of Xidian University, 2019, 46(4): 43-48.

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