Study on the Connection Performance of Aluminum Alloy Honeycomb Plate Composite Structure with Lock Riveting Connection

In order to study the mechanical properties of aluminum alloy honeycomb panel rod combination structures with lock riveting connections, this paper conducted static test analysis on three sets of aluminum alloy honeycomb panel rod combination structures with lock riveting connections, and explored the influence of honeycomb panels, lock riveting connection spacing, etc. on the mechanical characteristics and deformation performance of the combination structure. Experiments have shown that the participation of aluminum alloy honeycomb panels in the joint work of grid shell structures fully utilizes the advantages of lightweight and high-strength honeycomb panels and aluminum alloy members, significantly improving the mechanical and deformation properties of the composite structure. The effective connection between aluminum alloy honeycomb panels and aluminum alloy rods is the key to unleashing the performance of aluminum alloy honeycomb panels and rods. The ultimate failure mode of non-plate composite structures is brittle failure at the connection nodes of aluminum alloy rods, while the ultimate failure mode of aluminum alloy honeycomb panel rod composite structures is ductile failure that can continue to bear the load even after the aluminum alloy rod fractures while ensuring the connection performance of locking and riveting connectors. At the same time, different connection methods have a significant impact on the composite structure. Compared to traditional core pulling rivet connections, plate to rod locking rivet connections can effectively improve the overall integrity of the composite structure, and there is no locking rivet node failure when the structure is damaged. There is only local buckling in plate, which has good connection performance. In addition, the spacing between locking and riveting connections has a significant impact on the bearing capacity and deformation performance of aluminum alloy honeycomb panel rod composite structures. With the same diameter, connection process, and honeycomb panel thickness, the smaller the connection spacing, the greater the bearing capacity of the composite structure.