PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 34–42

Keywords: Tubular adhesive joints; Structural adhesive; Finite Element Method; Cohesive Zone Models; Strength prediction 1. Introduction There are different geometries of adhesive joints, namely single and double-lap joints, stepped joints, scarf joints, and tubular joints. Tubular joints may have different geometrical configurations. In overlap tubular joints, a tube with a lower diameter is introduced into a tube with a larger diameter, and both are joined along the overlap length (Faria and Campilho 2024). Tubular adhesive joints are widely used in industries that make use of tubular constructions, such as civil construction (to join tubular trusses), pressure vessels, and medium-sized metalworking Abstract There are different geometries of adhesive joints, including tubular joints, where a tube with a lower diameter is introduced into a tube with a larger diameter. This joint geometry promotes high strength/weight ratio, improved stresses distribution and good corrosion resistance. The present work numerically compares the performance of three adherend materials in overlap tubular joints, considering the variation of the adherend material and overlap length ( L O ). The numerical analysis, using Cohesive Zone Models (CZM), was initially validated with experimental data. The developed numerical work enabled to obtain the peel ( σ y ) and the shear stresses ( τ xy ) in the adhesive layer using purely elastic models. Then, by CZM, strength prediction was carried out. The joint composed of DIN 55Si7 steel adherends and the adhesive Araldite ® AV138 showed the highest tensile strength. © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 12th Annual Conference of Society for Structural Integrity and Life (DIVK12) Adherend effect on the tensile behavior of tubular adhesive joints C.F.F. Gomes a , R.D.S.G. Campilho a,b, *, R.D.F. Moreira a , K. Madani c , S.C. Djebbar c a CIDEM, ISEP – School of Engineering, Polytechnic of Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal. b INEGI – Pólo FEUP, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal c Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Ci té Ben M’hidi, 22000, Sidi Bel Abbes, Algeria.

* Corresponding author. Tel.: +351939526892; fax: +351228321159. E-mail address: raulcampilho@gmail.com

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 10.1016/j.prostr.2025.08.071