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

Chair of Designing Plastics and Composite Materials (250)

University of Porto

Research output: Contribution to journal › Article › Research › peer-review

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.

Original language	English
Number of pages	12
Journal	Mechanics of advanced materials and structures
Volume	31.2024
Issue number	28
DOIs	https://doi.org/10.1080/15376494.2023.2299936
Publication status	Published - 12 Jan 2024

Bibliographical note

Keywords

Bonded joint
curved single lap joint
finite element analysis
reduction of stress concentrations
strength prediction
structural adhesive

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10.1080/15376494.2023.2299936

Cite this

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title = "The reduction of stress concentrations in adhesive joints with the use of curved aluminum adherends",

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.",

keywords = "Bonded joint, curved single lap joint, finite element analysis, reduction of stress concentrations, strength prediction, structural adhesive",

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AU - Carbas, Ricardo

AU - Marques, Eduardo A. S.

AU - Silva, Lucas F. M. da

PY - 2024/1/12

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

Abstract

Bibliographical note

Keywords

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