基于特征响应谱的防隔热构件脱粘损伤定位  

Debonding Damage Location of Thermal Insulation ComponentsBased on Feature-Level Response Spectrum

作　　者：谢学多 揭小落 毕京丹[1] 刘文立 刘鸿亮 XIE Xue-duo;JIE Xiao-luo;BI Jing-dan;LIU Wen-li;LIU Hong-liang(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)

机构地区：[1]北京强度环境研究所,北京100076

出　　处：《强度与环境》2021年第1期57-63,共7页Structure & Environment Engineering

摘　　要：飞行器防隔热构件多采用胶粘形式与冷结构连接,在严酷的飞行振动环境中易发生脱粘损伤,有必要利用地面环境试验考核其环境适应性,并在试验后及时判断结构健康状态。本文提出一种基于结构特征级扫描响应谱均方根偏差(Root Mean Square Deviation,RMSD)的损伤定位方法,可得到结构全部区域的损伤概率分布云图,实现结构损伤识别与定位。以一种防隔热材料构件为研究对象,在仿真分析和试验研究中应用该方法对结构的特征级扫描响应谱进行分析,实现了结构脱粘损伤识别与准确定位。Most of the aircraft thermal insulation components are connected with the cold structure in the form of adhesive,which is prone to debonding damage in the harsh flight vibration environment.It is necessary to use the ground environmental test to assess its environmental adaptability and judge the structural health state in time after the test.In this paper,a damage location method based on root mean square deviation(RMSD)of feature-level sine-swept vibration response spectrum is proposed,which can obtain the cloud map of damage probability distribution in all regions of the structure and realize structural damage identification and location.Taking a kind of thermal insulation material component as the research object,the feature-level sine-swept vibration response spectrum of the structure is analyzed in this method by simulation and experiment,respectively.The result demonstrates that the structural debonding damage identification and accurate location can be realized.

关 键 词：防隔热构件 脱粘损伤 特征级扫描 损伤定位 

分 类 号：V416.5[航空宇航科学与技术—航空宇航推进理论与工程]