脱粘对平纹编织面板蜂窝夹芯结构侧压性能的影响  

THE EFFECT OF DEBONDING ON EDGEWISE COMPRESSION PROPERTIES OF HONEYCOMB SANDWICH STRUCTURE WITH PLAIN WOVEN FACEPLATE

作　　者：余芬[1] 程吉 王轩[1] 周春苹 丁常方 YU Fen;CHENG Ji;WANG Xuan;ZHOU Chun-ping;DING Chang-fang(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows,Research Institute for Special Structure of Aeronautical Composite,AVIC,Jinan 250023,China;Tianjin Istar Space Technology Co.,Ltd.,Tianjin 300304,China)

机构地区：[1]中国民航大学航空工程学院,天津300300 [2]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 [3]天津爱思达航天科技有限公司,天津300304

出　　处：《复合材料科学与工程》2021年第1期5-12,46,共9页Composites Science and Engineering

基　　金：国家自然科学基金(11702317);航空科学基金(2018ZF67011);中央高校基本科研业务费中国民航大学专项(3122019099)。

摘　　要：为研究脱粘对平纹编织面板蜂窝夹芯结构侧压性能的影响,采用ABAQUS/Explicit有限元分析平台,结合VUMAT子程序,建立基于渐进损伤失效理论的有限元分析模型。开展无损伤和三种不同直径脱粘的平纹编织面板蜂窝夹芯结构侧压性能试验,并将结果与有限元分析结果进行对照。研究表明:试验与有限元仿真得到的失效载荷和破坏模式吻合很好,验证了所建立有限元模型的正确性;无损伤和含不同直径脱粘的平纹编织面板蜂窝夹芯结构在侧压作用下的破坏模式均为面板屈曲、压缩断裂以及蜂窝芯子的压缩破坏;脱粘对平纹编织面板蜂窝夹芯结构侧压承载能力的影响较小,面板是侧向压缩的主要受力部分;随着脱粘直径增大,载荷位移曲线波动更剧烈且波动频次更高;胶层损伤主要发生在临近脱粘的较小区域,对结构整体性能影响很小;面板的损伤从自由边沿垂直于承载力的方向扩展,直至断裂。In order to study the effect of debonding on the edgewise compression performance of the honeycomb sandwich structure with plain woven faceplate,the ABAQUS/Explicit solver and VUMAT subroutine were used to establish a finite element analysis model based on the progressive damage failure theory.The honeycomb sandwich structure with plain woven faceplate,non-damaging and debonding with three different diameters,were tested under edgewise compression.The testing results were compared with the results of finite element analysis.The research shows that the failure load and failure mode obtained by the finite element simulation are in good agreement with the results from the tests,which verifies the correctness of the established finite element analysis model.All the failure modes for the honeycomb sandwich structure with plain woven faceplate,non-damaging and debonding with three different diameters,are panel buckling,compression fracture,and compressive failure of the honeycomb core.Debonding has a small effect on the edgewise compression performance for the honeycomb sandwich structure with plain woven faceplate,and the faceplate is the main part carrying loading under edgewise compression.As the debonding diameter increases,the load-displacement curve fluctuates more violently and the frequency of fluctuations is higher.The damage of the adhesive layer mainly occurs in a small area near the debonding,and has little impact on the overall performance of the structure.The damage of the faceplate extends from the free edge,in the direction vertical to the loading,to the fracture.

关 键 词：平纹编织 蜂窝夹芯结构 渐进损伤分析 侧压性能 脱粘 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]