Failure prediction of T-peel adhesive joints by different cohesive laws and modelling approaches

Alessandro Pirondi

Abstract


In this work, Cohesive Zone Modelling (CZM) was used to simulate failure of T-peel bonded joints with 1.5mm thick adherends, respectively, bonded toghether with Loctite Multibond 330 adhesive. The fracture toughness and load-opening behaviour recorded in previous experiments on bonded Double Cantilever Beam (DCB) specimens were taken as reference to calibrate CZM parameters. Two-dimensional models were analysed using the FE code ABAQUS. The failing interface was modeled with the cohesive elements available in this software. The influence of:
i) different cohesive law shapes,
ii) modeling the presence of the adhesive layer explicitly, was studied.

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DOI: http://dx.doi.org/10.3221%2FIGF-ESIS.10.03