Abstract：In order to attain composite lattice structures with high load-carrying efficiency , stability of composite circular lattice structures are analyzed by using FEM. Parametric design program is compiled with the APDL language of ANSYS. Changing law of load-to-mass ratio which is attached to thickness of inner skin, thickness of outer skin , winding angle of inner skin and winding angle of outer skin is researched by utilizing the design program . As a result, when winding angles of inner skin and outer skin are equal to 90 degree, load-to-mass ratio of circular lattice structures is the lowest. In addition, when winding angles of inner skin and outer skin are the equal value, effi ciency of lattice structures is not too higher. When winding angle of inner skin and outer skin are not the equal value , and are appropriately selected, load-to-mass ratio of lattice structures can be more higher.
2011, 
