关键词: MATLAB；整体屈曲；局部屈曲；网格结构

Abstract:

In order to attain lattice structure with high load-carrying efficiency , according to the two kinds of probable buckling modes of fiber winding composite lattice structures, overall buckling and local buckling, the equations used to compute overall buckling loads and local buckling loads were derived, and MATLAB program was compiled and used to compute buckling loads. Axial compression experiments of 480mm lattice structure were carried on the INSTRON1346 material fatigue strength test machine. Computed results and experimental results were compared . As a result, using overall buckling methods and local buckling methods, limit axial compression load and buckling mode of composite lattice structures can be preferably forecasted.

Key words: MATLAB；overall buckling；local buckling；lattice structure