PSI - Issue 37

J.P.M. Lopes et al. / Procedia Structural Integrity 37 (2022) 714–721 Lopes et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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4. Conclusions This work aimed to numerically study, by CZM, the behavior of T -adhesive joints between aluminum adherends, considering different geometric variables ( a , t , l and r ). Numerically, a P m and U analysis was performed, using the Abaqus ® software. Visible differences were found depending on the geometrical parameters, which then translated into different P m and U : • a effect: Increasing a value showed an P m and U improvement and this behavior was due to the increased stiffness of the base. This analysis revealed a as an important design parameter; • t effect: Increasing the t thickness, a P m improvement was observed between t =0.5 and 2.5 mm, with an exception for t =1.5 mm with a lower value. The t influence in U study was somehow analogous to that of a , but not linear; • l effect: Due to the ductility of this adhesive, increasing the l value leads to a larger plasticized area and, consequently, P m and U increase accordingly; • r effect: It was found that P m increases linearly with the decrease of r . On the other hand, the r parameter has a significant effect on U , with higher r decreasing U in an approximately linear manner for the tested values. In conclusion, a proved to be the most important parameter in this type of reinforcement joint, and CZM method revealed to be a precious FEM method for studying T joints with precision and accuracy. References Adams, R. D. (2005). Adhesive bonding: science, technology and applications, Elsevier. Alfano, G., 2006. On the influence of the shape of the interface law on the application of cohesive-zone models. Composites Science and Technology 66(6), 723-730. Anyfantis, K. N. and Tsouvalis, N. G., 2012. 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