Stress distribution analysis of single overlap adhesive bonded joints - An analytical and numerical study

Resumo

The present work aims to present a comparative study of stress distribution along a single lap bonded
joint between analytical and numerical methods, which will be both 2D and 3D for further comparison. Through
this comparison, it is expected to display the stress concentration behavior predicted in traditional solid mechanics
bibliography, highlighting jap edges as main stress concentration areas as well as critical fracture regions, where
the adhesive layer is likely to peel. For this analysis, a number of hypotheses are raised, such as an isotropic
adherend (composed of steel), a homogenous adhesive lap joint and both adherend and adhesive components
behave as elastic materials. The present study is based on the international standard ASTM D1002 [1] tensile test.
This standard test is considered simple, especially given the low number of elements involved: two steel adherends
and an adhesive lap joint. However, the test provides important information regarding the parameters that directly
influence the stress distribution. The analytical methods used were modeled in the MATLAB® software, whereas
the numerical methods were conceived in ABAQUS® finite elements software.