Abstract: There are many node connections of composite material lattice structure, such as mechanical connection, beset in the groove, glue together and molding in one time. And there are many problems generally happened in these connections, the faceplate is easily divided, core members elastic bucking, faceplate is damaged and the strength of glue which needed is dissatisfactory. In order o solve these problems, this paper brings out a new technique connection which called self-balance connection, this connection has many advantages. And the new connection was used in the composite material lattice structure, compared with the lattice structure with traditional node connection, the paper made two specimens and died load tests were conducted. Experimental results show that the lattice structure with the new node connection have characters of high specific stiffness and high specific strength, and the strength of node is high. It solved the problem that the node is weak in lattice structure, and have good potential applications.

Key words: composite, lattice structure, self-balance, node connection