大型空间可展网状天线的形面分析  

FORM ANALYSIS OF LARGE SPACE DEPLOYABLE MESH ANTENNA

作　　者：张淑杰[1] 关富玲[1] 张京街[2] 

机构地区：[1]浙江大学土木系,浙江杭州310027 [2]重庆建筑科学研究院,重庆400015

出　　处：《空间结构》2001年第2期44-48,共5页Spatial Structures

基　　金：国家自然科学基金资助项目 ( 69982 0 0 9)

摘　　要：空间可展天线由索网和可展构架组成 ,形成索网抛物面形反射面。缚于构架上的索刚性很大 ,以避免因张拉而引起的索伸长 ,节点和索的数量满足静定条件。本文用蒙特卡罗模拟法计算作用力的大小和方向误差引起的表面敏感性 ,由结果可知构架式可展天线的曲面形状可通过改变索长来控制 ,能在不影响曲面上其它部分形状的条件下 。Space deployable antenna is composed of a reflective mesh and a deployable truss, forming a mesh parabolic surface. The cables in the antenna are rigid enough to prevent their elongation due to the tension, and the number of nodes and cables satisfies the statically determinant conditions. Surface sensitivity to magnitude and direction errors of the applied force is evaluated by Monte Carlo simulation. It is shown that the surface shape of antenna can be controlled by changing cable lengths, and local surface deformation can be improved without affecting the shape of other parts in the surface.

关 键 词：网状可展天线 索网结构 变形 节点 大型空间 

分 类 号：TU33[建筑科学—结构工程]