THREE DIMENSIONAL GEOMETRICAL NONLINEAR FINITE ELEMENT ANALYSIS IN ADHESIVELY BONDED JOINTS

In this work, a numerical study is performed to evaluate the feasibility of different geometric changes in single-lap aluminium joints under tension loads bonded with an araldite adhesive. Three dimensional finite element modeling of single lap joint subjected to uniformly distributed forces and investigated the stress distribution over the overlap area. Further, two types of cases are considered having identical and non-identical adherends. The finite element model of the joint is obtained using isoparametric three dimensional elements having eight nodes with three degrees of freedom each. The stress components and their distributions both on adhesive surface and on metallic elements are given in dimensionless form using three dimensional graphics. This paper presents a new model for three-dimensional finite element analysis of adhesive joints. The model considers geometric and material nonlinearities and uses solid brick elements as well as specially developed interface elements.