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Article

A Model of Damage for Brittle and Ductile Adhesives in Glued Butt Joints

1
Laboratory QUARTZ EA7393, Supméca, 93400 Saint-Ouen-sur-Seine, France
2
Department of Engineering, University of Ferrara, 44122 Ferrara, Italy
3
Aix-Marseille Université, CNRS, Centrale Marseille, LMA, 13453 Marseille, France
*
Author to whom correspondence should be addressed.
Received: 9 February 2021 / Revised: 28 February 2021 / Accepted: 3 March 2021 / Published: 6 March 2021
(This article belongs to the Special Issue Advances in Multiscale and Multifield Solid Material Interfaces)
The paper presents a new analytical model for thin structural adhesives in glued tube-to-tube butt joints. The aim of this work is to provide an interface condition that allows for a suitable replacement of the adhesive layer in numerical simulations. The proposed model is a nonlinear and rate-dependent imperfect interface law that is able to accurately describe brittle and ductile stress–strain behaviors of adhesive layers under combined tensile–torsion loads. A first comparison with experimental data that were available in the literature provided promising results in terms of the reproducibility of the stress–strain behavior for pure tensile and torsional loads (the relative errors were less than 6%) and in terms of failure strains for combined tensile–torsion loads (the relative errors were less than 14%). Two main novelties are highlighted: (i) Unlike the classic spring-like interface models, this model accounts for both stress and displacement jumps, so it is suitable for soft and hard adhesive layers; (ii) unlike classic cohesive zone models, which are phenomenological, this model explicitly accounts for material and damage properties of the adhesive layer. View Full-Text
Keywords: adhesive layer; butt joint; mode-I; mixed-mode; damage evolution; analytical solution adhesive layer; butt joint; mode-I; mixed-mode; damage evolution; analytical solution
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MDPI and ACS Style

Raffa, M.L.; Rizzoni, R.; Lebon, F. A Model of Damage for Brittle and Ductile Adhesives in Glued Butt Joints. Technologies 2021, 9, 19. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9010019

AMA Style

Raffa ML, Rizzoni R, Lebon F. A Model of Damage for Brittle and Ductile Adhesives in Glued Butt Joints. Technologies. 2021; 9(1):19. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9010019

Chicago/Turabian Style

Raffa, Maria L., Raffaella Rizzoni, and Frédéric Lebon. 2021. "A Model of Damage for Brittle and Ductile Adhesives in Glued Butt Joints" Technologies 9, no. 1: 19. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9010019

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