Numerical Evaluation of the Direct Method for Cohesive Law Extraction in Shear by the End-Notched Flexure Test

Fernandes, R.L.; Campilho, R.D.S.G.; Leitão, A.C.C.; Azevedo, J.C.S.

doi:10.1016/j.proeng.2015.08.046

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“…Therefore, the measurement of the critical energy release rate (critical ERR) of the adhesive is essential for effective use of CZM. Critical ERR in mode I and mode II can be measured experimentally with Double Cantilever Beam (DCB) and End Notch Flexure (ENF) tests [3,5,[29][30][31]. These properties depend on crack path, adhesive thickness, and ductility [32].…”

Section: Introductionmentioning

confidence: 99%

Effect of adhesive thickness and overlap on the behavior of composite single-lap joints

Fernández-Cañadas

Iváñez

Sánchez-Sáez

et al. 2019

Mechanics of Advanced Materials and Structures

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The effect of adhesive thickness and adherent overlap on behavior of composite single-lap joints (SLJ) under tensile load is studied by using a 3D finite-element model. A bilinear Cohesive Zone Model (CZM) law is used to represent the adhesive behavior and its parameters are determined as a function of adhesive thickness by carrying out Double Cantilever Beam and End-Notched Flexure tests. The performance of SLJ is defined by peak load, maximum shear and peel stresses. For the range of adhesive thicknesses considered, both maximum shear and peel stresses decrease with increasing adhesive thickness, while they increase with increasing overlap length.

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