Study on tensile performance of hybrid adhesive-riveted joint of carbon fibre sandwich structure based on energy method

Abstract

A finite element model of damage accumulation in the joint's tensile process was developed in ABAQUS software to address the complex load transfer mechanism of the hybrid adhesive-riveted joint of the carbon fiber sandwich structure. The change in adhesive-riveted energy was used creatively to characterize the joint's load-sharing law after verifying the accuracy of the simulation results. In addition, the effects of load sharing and eccentricity on the joint's tensile performance were investigated. The results show that the adhesive load came before the rivet load, but increasing the number of rivets improved the proportion of rivet load and prevented the adhesive layer from failing. A greater number of rivets also reduced the fluctuation of eccentricity, which affected the tensile load and crack propagation.