空间碎片充气展开防护结构的模态分析

Modal analysis of inflatable shield for space debris

摘要:

为解决目前机械式展开防护屏存在的固有问题,提出了一种新型可充气展开防护结构,并研究了该充气展开防护结构的动力学特性.对充气展开防护结构频率的影响因素进行了理论分析,通过有限元软件ANSYS进行了防护结构的模态分析,并研究了支撑管结构参数对防护结构动态特性的影响,得到了充气管直径以及充气管壁厚度等尺寸参数对充气结构模态的影响规律.分析结果表明,理论分析与模拟结果相一致,并且充气支撑管的直径和厚度对防护结构的模态有着重要影响.

Abstract:

According to the essential characteristic of mechanical shields,a new inflatable shield was developed to settle the disadvantage of the existed shields,and its dynamic character was studied.The modal analysis of the inflatable shield was carried out by ANSYS.Factors affecting the inflatable structures were analyzed according to the theory of structural dynamics,and the principle of effects of structural dimension parameters on the modes of the configuration was obtained.It is found that the theoretical analysis agrees well with simulated results,and thickness and diameter of the inflatable pipe are main factors affecting the modes of the configuration of inflatable shield.