基于ANSYS的可重复折展类球面天线支撑机构振动学特性分析

Analysis of Vibration Characteristics of a Repeatable Collapsible Spherical Antenna Support Mechanism Based on ANSYS

摘要: 在空间折展机构性能分析中是采用的是ANSYS软件，该软件的计算能力满足大型机构仿真的需求。本次分析的对象是一种经过变形后的剪叉机构组成的可重复折展类球面天线支撑机构。作为航天机械，在其工作环境下工作状态需要保持较高的稳定性，利用有限元技术可以对机构的工作状态进行分析，过多的机械振动会影响零件的工作性能、影响机构折展运动性能和结构稳定性。本次分析主要仿真、验证了变形剪叉机构设计的折展机构的稳定性满足设计需求，在材料上选择了典型的金属材料和复合材料，在符合条件的情况下选择了更为合适的复合材料作为机构折展单元主要材料。

Abstract: ANSYS software is used in the performance analysis of space folding mechanism. The computing power of the software meets the requirements of large-scale mechanism simulation. The object of this analysis is a repeatable folding spherical antenna support mechanism composed of a deformed shear fork mechanism. As an aerospace machine, its working state needs to maintain high stability under its working environment. Finite element technology can be used to analyze the working state of the mechanism. Excessive mechanical vibration will affect the working performance of the parts and the folding movement performance of the mechanism and structural stability. This analysis mainly simulates and verifies that the stability of the folding mechanism designed by the deforming shear fork mechanism meets the design requirements. Typical metal materials and composite materials are selected, and more appropriate composite materials are selected as the main material of the folding unit of the mechanism under the condition of meeting the conditions.