复合材料薄壁可储存管状伸展杆式支撑臂的设计及验证  

Design and Verification of Composite Thin-walled Storable Tubular Extendible Member Boom

作　　者：张中原 张涛涛 肖伟[1] 濮海玲[1] 杨淑利[1] ZHANG Zhongyuan;ZHANG Taotao;XIAO Wei;PU Hailing;YANG Shuli(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2025年第2期90-96,共7页Spacecraft Engineering

摘　　要：针对传统有限元方法模拟复合材料薄壁可储存管状伸展杆式支撑臂的收卷过程难以收敛的问题,文章采用支撑臂先端部展开压平、再整体收卷的分步分析方法,使得有限元计算过程成功收敛。针对支撑臂作为主支撑结构在柔性太阳翼上的应用问题,提出一套从支撑臂单杆到柔性太阳翼组合体的设计与验证方法,分为支撑臂单杆设计与组合体应用验证两方面,包括同材料试件大变形性能测试、收卷过程分步分析、单杆刚度及稳定性分析验证、柔性太阳翼组合体力学分析等。有限元计算结果显示:柔性太阳翼展开后一阶弯曲基频为0.998 Hz,一阶扭曲基频为1.227 Hz,说明具有良好刚度特性,证明了该设计的合理性,可为支撑臂在航天器可展载荷结构上的应用提供参考。In response to the problem of difficult convergence in traditional finite element methods for simulating the coiling process of composite thin-walled storable tubular extendible member(STEM)boom,this paper proposes a step-by-step analysis method that firstly flattens the tip of the STEM boom and then performs overall coiling,enabling successful convergence of finite element calculations.For the application of STEM boom as primary structural components in flexible solar wings,a systematic design and verification approach from single STEM boom to flexible solar wings assemblies is presented.This approach is divided into two aspects:the design of single STEM boom and the application verification of the combination,involving large deformation performance test of the same-material specimens,step-by-step analysis of the coiling process,stiffness and stability verification of STEM boom,and mechanical analysis of flexible solar wing assemblies.The finite element calculation results show that the first-order bending natural frequency of the deployed flexible solar wing is 0.998Hz,and the first-order torsional natural frequency is 1.227Hz,indicating excellent stiffness characteristics.This can provide reference for the application of STEM boom in deployable payload structures of spacecraft.

关 键 词：复合材料薄壁 可储存管状伸展杆式支撑臂 太阳翼 刚度 分步分析 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]