Prediction of Adhesion Failure of Bonded Joints using 3-Point Bending Test and Stress-Energy Coupled Criterion

Thiago Birro (1, 2) , Maëlenn Aufray (1, 2) , Eric Paroissien (1) , Frederic Lachaud (1)

1 ICA - Institut Clément Ader
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

In the recent years, a coupled energy and stress approach has been used successfully to treat problems involving stress concentration since the stress-based criteria only are no more valid near a singularity. For the adhesive failure characterization, Roche et al. [4] have developed a 3-point bending test which has a similar stress concentration condition, and thus the coupled criterion can be applied to predict the failure of the adhesively bonded joint. For mechanical properties determination, the semi-analytical approach Macro-element technique is used, and the results will be compared with Cohesive Zone Model (CZM) based on damage mechanics.

Mots clés: Bonded assemblies; 3-point bending test; Coupled criterion; Adhesion; Macro-element method

Domaines: Mécanique des matériaux [physics.class-ph]

Thiago Birro, Maëlenn Aufray, Eric Paroissien, Frederic Lachaud. Prediction of Adhesion Failure of Bonded Joints using 3-Point Bending Test and Stress-Energy Coupled Criterion. 12th European Adhesion Conference (EURADH), Sep 2018, Lisbon, Portugal. Proceedings of the 12th European Adhesion Conference (EURADH), pp.1-1, 2018. ⟨hal-02153745⟩