基于变胞理论的大型桁架在轨建造技术

On-orbit construction technology of large truss based on metamorphic theory

通过对比分析目前国内外桁架的构建方式,提出一种基于变胞理论的模块化桁架在轨装配新方法,并对装配流程进行初步设计。为进一步完善所提方法中变胞装配机构方案,针对大型桁架结构进行分析选择,确定桁架基本单元,并分析材料与桁架梁的长度对基频的影响。针对方案系统中的桁架单元模块与变胞装配机构进行概念设计与分析。该方法解决了构建大型桁架质量与体积受限于运载空间的问题,在可拓展能力、工作效率上有一定的优越性,可为今后空间大型桁架的建造提供参考。

By comparing and analyzing the current truss construction methods at home and abroad,a new method of modular truss on-orbit assembly based on metamorphic theory is proposed,and the assembly process is preliminarily designed.In order to further design the metamorphic assembly mechanism in the proposed method,large truss structures are analyzed and selected to determine the basic elements of the truss,and the influence of the material and the length of the truss beam on the fundamental frequency is analyzed.The conceptual design and analysis of truss unit module and metamorphic assembly mechanism in the scheme system are carried out.This method solves the problem that the mass and volume of the large truss are limited by the carrying space,and has certain advantages in expandable capacity and work efficiency,which can provide reference for the construction of large space truss in the future.