挖补修理蜂窝夹芯结构侧压强度的可靠性及灵敏度分析  

Reliability and sensitivity analysis of the edgewise compressive strength of scarf repaired honeycomb sandwich structures

作　　者：王轩[1] 王威[1] 余芬[2] 邹润文 王魁奎 WANG Xuan;WANG Wei;YU Fen;ZOU Runwen;WANG Kuikui(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;College of Traffic Science and Engineering,Civil Aviation University of China,Tianjin 300300,China;Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows,AVIC Research Institute for Special Structure of Aeronautical Composite,Jinan 250023,China)

机构地区：[1]中国民航大学航空工程学院,天津300300 [2]中国民航大学交通科学与工程学院,天津300300 [3]航空工业济南特种结构研究所高性能电磁窗航空科技重点实验室,济南250023

出　　处：《复合材料科学与工程》2024年第1期5-12,共8页Composites Science and Engineering

基　　金：国家973计划项目(20014CB046200);天津市科技计划项目(20YDTPJC00380);航空科学基金(2018ZF67011);中央高校基本科研业务费项目中国民航大学专项(3122019099)。

摘　　要：以挖补修理复合材料蜂窝夹芯结构为研究对象,考虑胶层性能的不确定性,通过ABAQUS-MATLAB-Python联合仿真,建立挖补修理蜂窝夹芯结构侧向压缩渐进损伤分析模型,得到随机变量与其所对应的输出响应。基于蒙特卡罗法进行可靠性分析,采用基于方差和失效概率的全局灵敏度分析方法进行参数灵敏度分析。结果表明:外载荷在不同数值区间下结构失效概率具有较大差异,在接近极限破坏载荷时失效概率显著增加;胶层厚度方向的弹性模量和面内两个相互垂直方向上的剪切模量对挖补修理蜂窝夹芯结构侧压强度方差和失效概率的影响较大。Taking the scarf repaired honeycomb sandwich structure of composite materials as the research object and considering the uncertainty of the adhesive layer material properties,the edgewise compression progressive damage analysis model of the scarf repaired honeycomb sandwich structure was established by ABAQUS-MATLAB-Python simulation,and the corresponding output response of random variables was obtained.Then,the reliability analysis was carried out based on Monte Carlo method,and the global sensitivity analysis method based on variance and failure probability was used to analyze the parameter sensitivity.The results show that the failure probability of the structure has great differences under different numerical intervals of external loads,and the failure probability increases significantly when approaching the ultimate failure load.The elastic modulus in the thickness direction of the adhesive layer and the shear modulus in the two mutually perpendicular directions in the plane have a great influence on the variance of the lateral compressive strength and failure probability of the honeycomb sandwich structure of the digging and repair.

关 键 词：复合材料 蜂窝夹芯结构 挖补修理 全局灵敏度 可靠性 

分 类 号：TB332[一般工业技术—材料科学与工程]