Article Dans Une Revue Engineering Analysis with Boundary Elements Année : 2025

Comparative analysis of adhesive debonding in three-point bending tests using boundary element methods: Coupled criterion versus interface damage model

Résumé

Recent literature has introduced a novel quantitative approach for assessing critical stress and fracture toughness, utilizing a coupled stress energy criterion, commonly referred to as the coupled criterion (CC). However, evaluating the required parameters demands considerable effort using semi-analytical methods or finite element analysis techniques. The Boundary Element Method (BEM) provides an alternative to traditional approaches, as it eliminates the need for domain meshes and directly computes unknown field variables on the interfaces. The present study employs the CC and a 2D multi-zone BEM to access failure initiation and propagation in the adhesive interface of three-point bending test (3PBT’s) with available experimental and numerical responses. The interface properties are then used in a progressive interface damage BEM analysis to evaluate the structural response of the tests and validate the values obtained for these properties. The study addressed both symmetric and asymmetric adhesive failure scenarios, indicating that the evaluation of fracture parameters in both cases is analogous because of the short crack length at the onset of failure. The results demonstrate that the use of the new quantitative methodology with BEM models, proposed herein, allows one to model complex geometries and interface debonding problems with greater accuracy and efficiency.


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hal-05280081 , version 1 (24-09-2025)

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Sérgio Gustavo Ferreira Cordeiro, Thiago Birro, René Quispe Rodriguez, Eder Lima de Albuquerque, Lucas Silveira Campos, et al.. Comparative analysis of adhesive debonding in three-point bending tests using boundary element methods: Coupled criterion versus interface damage model. Engineering Analysis with Boundary Elements, 2025, 180, pp.106474. ⟨10.1016/j.enganabound.2025.106474⟩. ⟨hal-05280081⟩
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