复合材料厚板结构压缩稳定性和承载能力分析

The compression stability of composite thick plates was studied. Firstly, the compression test was carried out on the thick plate structure of the composite fuselage. It was found that the bottom skin of the stringer was buckling first, and the stringer did not play the role of wave isolation. Secondly, the finite element linear and nonlinear analysis methods were carried out on the structure. The he buckling characteristics was verified. Finally, the stability analysis method was revised according to the test and analysis results. The buckling load and bearing capacity calculated by the modified analysis method were more accurate. A new method for buckling analysis and load-bearing capacity calculation of composite thick plate structures was established.