2015 Volume 51 Issue 4 Pages 105-115
Stepped-lap adhesive joints with similar solid and hollow cylinder adherends under static bending moments are analyzed using 3-DFEM.The effects of adhesive Young's modulus, the adhesive thickness,scarf angle,and then umber of steps on the interface stress distributions are examined.The code of FEM employed is ANSYS.The maximum principal stress σ1 is singular at the outside edge of the interfaces for both of the similar solid cylinder and hollow cylinder joint,while,the value of σ1 is larger at the outside diameter than that at the inside diameter for the similar hollow cylinder joints. The value of σ1 decreases as the adhesive thickness decreases and as adhesive Young's modulus, the number of steps and the scarf angle increase. The bending moments when the joints rupture are predicted using the measured stress-strain curve of the adhesive.The predicted ruptured bending moments for the both joints are in a fairy good agreement with the measured results. It is found that the rupture dbending moment for similar solid cylinder joints is slightly larger than that for similar hollow cylinder joints
