Abstract:In order to research the effect of bolt eccentric distance and install direction on static tensile behavior of bolted joints with L-shaped Ti-Al curved laminate, the researches are adopted by the experimental and numerical methods. A test is accomplished on 7 sets of specimens with 3 groups (i.e. pure tension bolted,up bolted and down bolted) divided. The test results demonstrate the average collapse load and mode of group A respectively. The Influence of eccentric distance and installation direction on mechanical behavior of bolted joints is investigated by group B、C. FEMS are proposed by ABAQUS to reproduce the test results of the above-mentioned groups. Through Johnson-Cook, the plastic and failure criteria of the bolt are developed. The stiffness, failure mode and collapse load obtained by FEM method are in good agreement with the experimental results. Besides, the FEM can clearly describe the starting position and expansion process of bolt breakage. According to the experimental and numerical research, the failure load of butt-bolted joints is much lower than that of the bolt pure tension group due to the additional bending moment, and the ultimate loads decrease with the increase of eccentric distance. Furthermore, the ultimate loads of down bolted are slightly higher than that of the up bolted while comparing specimens with the same eccentric distance. The failure mode of group A and C is bolt cross-section fracture (type I), while the failure mode of group B is bolt head curling failure (type Ⅱ). This study has a certain of guiding significance for the design of bolted joints with L-Shaped curved laminate.