The Effect of Fillet Geometry on Stress in Weld-Bonded Joints
The influence of fillets with different geometry shape on the stress distribution in aluminum alloy weld-bonded single lap joint was investigated using elasto-plastic finite element method (FEM). The results show that it is advantageous of reducing stress concentration in adhesive layer near the ends of the lap zone in single lap weld-bonded aluminum joints and part of the stress transferring from adhesive layer to the nugget when the joints with a couple of right triangle fillets over other shapes. The load-bearing capacity of the whole weld-bonded joints may be improved. The full-triangular fillet is recommended that it be more advantageous of decreasing the stress peak value and making the stress distribution in overlap zone more uniform.
Zhengyi Jiang and Chunliang Zhang
J. L. Yan et al., "The Effect of Fillet Geometry on Stress in Weld-Bonded Joints", Advanced Materials Research, Vols. 97-101, pp. 767-770, 2010