Simulation and Parameter Design of the Groove Structure on the Metal/GFRP Bonding Joint Using the RVE Model

다국어 초록 (Multilingual Abstract)

Co-cured metal/GFRP joints with groove structures can maintain the integrity of GFRP and the continuity of glassfibres. To improve the performance of the groove structure, it is necessary to design groove parameters (groove depth, width,etc.). Due to the repetitive structure of the groove morphology, the representative volume element (RVE) was used to buildthe model. Then, shearing and pulling-out simulations of the groove structures were carried out, and the simulated resultswere compared with the experimental results. In addition, the influence of groove depth and width on the bondingperformance of the structures was studied, and the optimal result was obtained (width: 1.00 mm, depth: 0.75 mm). Finally, the±45 ° groove structure (width: 1.414 mm, depth: 1.00 mm) was equivalent to a 0-thickness cohesive element layer throughthe stiffness equivalent method, and the results were compared with the previous test (DCB and shear test) results, and similarresults were obtained. The equivalent analysis not only verifies the applicability of the stiffness equivalent method but alsoverifies the practicability of the groove structure obtained by the RVE model.

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