The reduction of stress concentrations in adhesive joints with the use of curved aluminum adherends

Vasco Daniel Castro Pires; Francisco C. C. Ribeiro; Ricardo Carbas; Eduardo A. S. Marques; Lucas F. M. da Silva

doi:10.1080/15376494.2023.2299936

The reduction of stress concentrations in adhesive joints with the use of curved aluminum adherends

Vasco Daniel Castro Pires, Francisco C. C. Ribeiro, Ricardo Carbas, Eduardo A. S. Marques, Lucas F. M. da Silva

Lehrstuhl für Konstruieren in Kunst- und Verbundstoffen (250)

Universität Porto

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

Abstract

The study proposes a novel concept of a curved single lap joint (SLJ) with non- uniform adhesive
thickness to reduce stress concentrations near overlap edges. Experimental and numerical meth-
odologies investigate this joint using two adhesives: Araldite 2015-1 and AV138. Numerical models
in ABAQUS predict cohesive failure in the adhesive layer. The curved configuration doesn’t signifi-
cantly enhance strength in SLJ using ductile adhesives, but for brittle ones, strength increased by
131% due to sensitivity to peak stresses. In conclusion, the curved SLJ effectively reduces stress
concentrations and the effectiveness of this concept is linked to the ductility of the adhesive used.

Originalsprache	Englisch
Seitenumfang	12
Fachzeitschrift	Mechanics of advanced materials and structures
Jahrgang	31.2024
Ausgabenummer	28
DOIs	https://doi.org/10.1080/15376494.2023.2299936
Publikationsstatus	Veröffentlicht - 12 Jan. 2024

Bibliographische Notiz

Publisher Copyright:
© 2024 Taylor & Francis Group, LLC.

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10.1080/15376494.2023.2299936

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abstract = "The study proposes a novel concept of a curved single lap joint (SLJ) with non- uniform adhesivethickness to reduce stress concentrations near overlap edges. Experimental and numerical meth-odologies investigate this joint using two adhesives: Araldite 2015-1 and AV138. Numerical modelsin ABAQUS predict cohesive failure in the adhesive layer. The curved configuration doesn{\textquoteright}t signifi-cantly enhance strength in SLJ using ductile adhesives, but for brittle ones, strength increased by131% due to sensitivity to peak stresses. In conclusion, the curved SLJ effectively reduces stressconcentrations and the effectiveness of this concept is linked to the ductility of the adhesive used.",

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AU - Carbas, Ricardo

AU - Marques, Eduardo A. S.

AU - Silva, Lucas F. M. da

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