In this work, a cohesive zone model of fracture is employed to study debonding in plastically deforming Al/epoxy T-peel joints. In order to model the adhesion between the bonded metal strips, the Park-Paulino-Roesler (PPR) potential based cohesive model (J Mech Phys Solids, 2009; 57:891-908) is employed, and interface elements are implemented in a finite element commercial code. A study on the influence of the cohesive properties (i.e. cohesive strength, fracture energy, shape parameter and slope indicator) on the predicted peel-force versus displacement plots reveals that the numerical results are mostly sensitive to cohesive strength and fracture energy. In turn, these parameters are tuned until a match between experimental and simulated load displacement curves is achieved. © 2011 Published by Elsevier Ltd.
Simulation of debonding in Al/epoxy T-peel joints using a potential-based cohesive zone model / Alfano, M.; Furgiuele, F.; Lubineau, G.; Paulino, G. H.. - In: PROCEDIA ENGINEERING. - ISSN 1877-7058. - 10:(2011), pp. 1760-1765. (Intervento presentato al convegno 11th International Conference on the Mechanical Behavior of Materials (ICM11) tenutosi a Lake Como, Italy nel 5-9 Giugno 2010) [10.1016/j.proeng.2011.04.293].
Simulation of debonding in Al/epoxy T-peel joints using a potential-based cohesive zone model
Alfano M.;Furgiuele F.;
2011
Abstract
In this work, a cohesive zone model of fracture is employed to study debonding in plastically deforming Al/epoxy T-peel joints. In order to model the adhesion between the bonded metal strips, the Park-Paulino-Roesler (PPR) potential based cohesive model (J Mech Phys Solids, 2009; 57:891-908) is employed, and interface elements are implemented in a finite element commercial code. A study on the influence of the cohesive properties (i.e. cohesive strength, fracture energy, shape parameter and slope indicator) on the predicted peel-force versus displacement plots reveals that the numerical results are mostly sensitive to cohesive strength and fracture energy. In turn, these parameters are tuned until a match between experimental and simulated load displacement curves is achieved. © 2011 Published by Elsevier Ltd.
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