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In this paper, a new joint - bulge formed joint is proposed, which is designed for truss structure. Its mechanical performance is analyzed, and the finite element modeling and the simulation are carried on. The stress concentration theory is combined to obtain the stress concentration factor and compared with the direct intersecting joint, which shows superiority of bulge formed joint. On the basis of this, a test device is designed for stress test of the two kinds of joints. The results of the test verify the rationality of the result of the finite element simulation that the stress level of the bulge formed joint is small. Both the finite element simulation and the experiment show that the designed joint can improve the security of the joints.

Simulation Analysis and Experiment of Mechanical Performance of Bulge Formed Joint