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The experimental and numerical study on the mechanical behaviours of adhesively bonded joints
Composites Part B: Engineering ( IF 12.7 ) Pub Date : 2019-12-20 , DOI: 10.1016/j.compositesb.2019.107725
Elanur Çelebi̇ Kavdir , Murat Demir Aydin

Experimental and numerical analyzes of single lap joints formed by combining AA2024-T3 aluminum alloys with two-component liquid structural adhesive DP410 were carried out in the present study. Tension and four-point bending experiments of single lap joints were performed in the experimental analysis section of this study in addition to 2-D Digital Image Correlation (DIC) analyses performed via the processing of the images obtained during these experiments. Whereas, three dimensional nonlinear finite element analyses of tensile and four point bending of single lap joints were performed for the numerical analysis section of the study by taking into consideration the load and boundary conditions applied during experimental analyses. Normal and shear strain distributions obtained via DIC and finite element method were compared by taking into consideration the middle line of the adhesive layer in the case of tensile and four-point bending loads of single lap joints. As a result of this comparison, it was found that there was a sufficient level of compatibility (not very close agreement) in strain distributions between finite element analyzes and DIC technique. As a result, it can be said that three-dimensional DIC analysis will yield more harmony and more accurate results when it is taken into account that three-dimensional finite element analysis and 2D DIC analysis were performed in the study.



中文翻译:

胶接接头力学行为的实验与数值研究

本研究对AA2024-T3铝合金与两组分液态结构胶DP410组合而成的单搭接接头进行了实验和数值分析。除了通过处理在这些实验过程中获得的图像进行二维数字图像相关性(DIC)分析外,还在本研究的实验分析部分中进行了单膝关节的拉伸和四点弯曲实验。鉴于此,本研究的数值分析部分在考虑了分析过程中所施加的载荷和边界条件的情况下,对单搭接接头的拉伸和四点弯曲进行了三维非线性有限元分析。在单搭接接头承受拉伸和四点弯曲载荷的情况下,通过考虑粘合剂层的中线,比较了通过DIC和有限元方法获得的法向和剪切应变分布。作为比较的结果,发现在有限元分析和DIC技术之间的应变分布中有足够的兼容性(不是很一致)。结果,可以说,考虑到在研究中进行了三维有限元分析和2D DIC分析,三维DIC分析将产生更和谐,更准确的结果。结果发现,有限元分析和DIC技术之间的应变分布具有足够的兼容性(不是非常一致)。结果,可以说,考虑到在研究中进行了三维有限元分析和2D DIC分析,三维DIC分析将产生更和谐,更准确的结果。结果发现,有限元分析和DIC技术之间的应变分布具有足够的兼容性(不是非常一致)。结果,可以说,考虑到在研究中进行了三维有限元分析和2D DIC分析,三维DIC分析将产生更和谐,更准确的结果。

更新日期:2019-12-20
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