基于光纤光栅传感器网络的共底贮箱结构疲劳试验响应监测技术  

Fatigue Test Response Monitoring Technology of Common Bottom Tank Structure Based on Fiber Grating Sensor Network

作　　者：刘博 张学成 陶静雅 何子凡 吴奇[4] 芦吉云[3] LIU Bo;ZHANG Xuecheng;TAO Jingya;HE Zifan;WU Qi;LU Jiyun(Shanghai Spaceflight Precision Machinery Institute,Shanghai 201600,China;Third Military Representative Office of Army Equipment Department in Shanghai,Shanghai 200031,China;College of Aeronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;State Key Laboratory of Mechanics and Control of Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]上海航天精密机械研究所,上海201600 [2]陆军装备部驻上海地区第三军事代表室,上海200031 [3]南京航空航天大学民航学院,江苏南京210016 [4]南京航空航天大学航空航天结构力学及控制国家重点实验室,江苏南京210016

出　　处：《上海航天(中英文)》2024年第S2期71-76,94,共7页Aerospace Shanghai(Chinese&English)

基　　金：国家级项目

摘　　要：随着重大航天工程的推进,航天器从近地飞向深空,从短期驻留到长期在轨运行,使得航天工程的空间环境更为复杂,因此对航天器长期服役的安全与可靠性也提出了更高要求。在轨飞行过程中,航天器结构经受的内压与热循环等复杂环境可能导致结构刚度和承载能力的下降,影响结构的使用寿命。为此,本文针对贮箱结构疲劳试验的长期精准监测难题,开展结构长期在线监测及数据分析技术研究,设计了光纤光栅传感器网络,应用于新一代贮箱万周期地面疲劳试验,以期为长期服役航天器的可靠性提高提供技术支持。With the advancement of major space projects such as lunar and deep space exploration,spacecraft sail from near-earth to deep space,and from shot-term residence to long-term orbit operation,the space environment becomes more complex,and high requirements are put forward for safety and reliability of spacecraft in long-term service.During in-orbit flight,the complex environment such as internal pressure and thermal cycling of spacecraft structure may lead to the decline of structural stiffness and bearing capacity,and affect the service life of the structure.Therefore,aiming at the difficult problem of long-term fatigue test of tank structure,this paper carried out research on online monitoring and data analysis technology,fiber grating sensor network is designed,the fatigue test of a new generation tank is applied.The research provides support for the high-reliability development of long-service spacecraft.

关 键 词：载人航天 新一代贮箱 光纤光栅 疲劳试验 应变监测 

分 类 号：V416.1[航空宇航科学与技术—航空宇航推进理论与工程]