Notice of Retraction: Effect of adherend thickness on stress distributed in weld-bonded aluminum joints

Abstract

The effect of the adherend thickness on the stress distribution along the mid-bondline and adherend (0.05 mm away from the interface) in weld-bonded aluminum single lap joints was investigated using elastic-plastic finite element method (FEM). The results obtained show that the stress distribution along the mid-bondline and the adherend near the interface in weld-bonded aluminum single lap joint is asymmetric when there is a difference in thickness of the upper and lower adherend. The load is mainly subjected by the nugget and the stress distributed in this region presents high in the left and lower in right when the upper adherend thickness increased and vice versa. The peak values of the stresses increase when the thickness difference between upper and lower adherend is higher. The effect of upper adherend thickness is not significant on the stress distribution in joint when it is thicker than 2 mm but the effect of lower one is significant. The peak stress along the mid-bondline within the region of the nugget of the joint increased from 55.2 MPa to 77.4 MPa when the lower adherend thickness increased from 1 mm to 2 mm. It is suggested that the thicker plate be arranged as the unloaded (upper) adherend when the weld-bonded aluminum single lap joints is made of the plates with difference thickness.