Techno Press

Steel and Composite Structures   Volume 26, Number 3, February10 2018, pages 265-272
Numerical analysis on tensile properties of composite hybrid bonded/bolted joints with flanging
Xiaoquan Cheng, Jie Zhang, Jikui Zhang, Peng Liu, Yujia Cheng and Yahong Xu

Abstract     [Full Text]
    A detailed study was carried out on the tensile properties of the single-lap joint of a steel panel bolted/bonded to a composite laminate with a flanging. Finite element model (FEM) was established to predict the strength and to analyze the damage propagation of the hybrid joints by ABAQUS/Standard, which especially adopted cohesive elements to simulate the interface between the laminate and adhesive. The strength and failure mode predicted by FEM were in good agreement with the experimental results. In addition, three influence factors including adhesive thickness, bolt preload and bolt-hole clearance were studied. The results show that the three parameters have effect on the first drop load of the load-displacement curve, but the effect of bolt-hole clearance is the largest. The bolt-hole clearance should be avoided for hybrid joints.
Key Words
    composite structures; hybrid structure; failure mode; damage; finite element method
(1) Xiaoquan Cheng, Jie Zhang, Jikui Zhang, Peng Liu, Yujia Cheng:
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
(2) Yahong Xu:
Institute 306 of the 3rd Academy of CASIC, Beijing, 100074, China.

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