The effect of adhesive thickness on spot weld-bonded joints of dissimilar materials using finite element model
DOI:
https://doi.org/10.1260/1750-9548.3.4.387Abstract
In present work, the bonded and spot weld-bonded of dissimilar materials joints for three dimensional models using the finite element technique were studied for different adhesive thicknesses. The results show that the stresses in adhesive bonded joints are concentrated at the ends of the overlapped area. When the spot-welding is combined with the adhesive bonding, the stresses are concentrated at the adhesive bond ends and at both ends of the weld nugget. The results show also that the stresses are more concentrated towards the material of the lowest melting point. Changing the thickness of the adhesive layer for various dissimilar material models give us the optimal thickness for each case that one can use in designing lap joints of two dissimilar materials. The results in general show that the thinner the adhesive is, the higher is the peak stresses developed in the weld-bonded joint.
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