PSI - Issue 41

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 41 (2022) 60–71

© 2022 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 the MedFract2Guest Editors. Abstract Adhesive joints have been increasingly applied in various industries. The main concepts of adhesive joint configurations applied to flat adherends are also valid for tubular adhesive joints, which find application on offshore installations, trusses, and piping. Tubular joints present elevated strength to bending loads, have a larger overlap area than other types of joints and enable the assembly of lightweight and stiff structures. This work compares the tensile performance of three adhesives in aluminum tubular joints (AW6082-T651), as a function of different overlap lengths ( L O ). An analytical analysis is carried out, whose results are compared with a numerical analysis using cohesive zone models (CZM) and with the experimentally obtained maximum load ( P m ). The analytical analysis was carried out using two analytical methods, from a simpler and more direct formulation, in which peel ( σ y ) and shear stresses ( τ xy ) were analyzed, and subsequently, continuum mechanics criteria were used to infer P m . The CZM results were the most accurate, while the analytical models showed some limitations related to the continuum mechanics-based criteria. © 2022 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 the MedFract2Guest Editors. Keywords: Adhesive joints, structural adhesive, strength prediction, analytical method. 1. Introduction Nowadays, most of the studies involving materials is carried out to improve their mechanical properties according to their function and, simultaneously, intending to reduce the weight of components, from a small-sized piece such as an electronic board to large structures such as a bridge. However, regardless of the size of the part/structure, it normally Abstract Adhesive joints have been increasingly applied in various industries. The main concepts of adhesive joint configurations applied to flat adherends r also valid for tubular adhesi e j ints, which find applicati on offshore installations, trusses, a d pi ing. Tubular joints pres nt ele te st ength to bending l ads, have a larger overlap area than ther types f joint and enable the assembly f lightw ight and stiff struc ures. This work comp r s the tensile performance of thr e adh ives in aluminum tubular joints (AW6082-T651), s a function of different verlap lengths ( L O ). An analytic l analysis is carried out, whose results are c mpared with a numeric l nalysis using coh sive zone mod ls (CZM) and with the experimentally obtained maximum load ( P m ). The analytical nalysis w s c rried out using two analytical methods, from a simpler and ore direct formulation, in which peel ( σ y ) d shear stresse ( τ xy ) were analyzed, and subsequently, continuum mechanics criteria we used o infer P m . The CZM results were the most accurate, whil the analytical models showed s me limitations related to the continuum mechanics-based crit ria. © 2022 The Autho s. 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 the MedFract2Guest Editors. K ywords: Adhesive joints, structural adhesive, strength prediction, analytical method. 1. Introduction Nowadays, most of the studies involving materials is carried out to improve their mechanical properties according to their function and, simultaneously, inte ding to reduce the weight f components, from small-siz d piece such as an el ctro ic board to large struct res such as a bridge. However, regardless of th size of the part/structure, it normally 2nd Mediterranean Conference on Fracture and Structural Integrity Validation of theoretical models for the strength prediction of tubular adhesive joints A.E.S. Pinheiro a , R.D.S.G. Campilho a,b *, R.D.F. Moreira a , I.J. Sánchez-Arce b a ISEP – School of Engineering, Polytechnic Institute 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 2nd Mediterranean Conference on Fracture and Structural Integrity Validation of theoretical models for the strength prediction of tubular adhesive joints A.E.S. Pinheiro a , R.D.S.G. Campilho a,b *, R.D.F. Moreira a , I.J. Sánchez-Arce b a ISEP – School of Engineering, Polytechnic Institute 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

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

2452-3216 © 2022 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 the MedFract2Guest Editors. 2452-3216 © 2022 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 u der responsibility of t MedFract2Guest Editors.

2452-3216 © 2022 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 the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.008