Affiliation:
1. China Three Gorges University
Abstract
The effect of the preformed deflection angle in the lap zone on the failure mode and the
stresses distribution in the single-lap joint made of the epoxy adhesive and the aluminium adherend
was investigated using elasto-plastic finite element method (FEM) and the experimental method of
the shear strength testing. The failed surfaces were studied with the diagrams of scanning electron
microscopy (SEM). The results from the numerical simulation showed that all the peak stresses in
adhesively bonded single lap joint were decreased first and increased again as the preformed
deflection angle was increased from 00 to 150. The lowest values occurred when the angle was taken
as 100 and its strength is 22.1% higher than that of the standard one as the peak stresses were
decreased and the stress distributed more evenly. The SEM images also show that the failure mode
of the joint was transmitted from the adhesion to the mixed one as the deflection angle increased.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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