有孔FRP平板の軸圧縮座屈強度
CFRP, GFRPクロスプライ積層平板の場合
1988 年 37 巻 420 号 p. 1050-1056
詳細
1988 年 37 巻 420 号 p. 1050-1056
The buckling behavior associated with composite plates containing a cut-out portion is a deeply interesting engineering problem. Here the buckling strength of cross-ply laminated rectangular plates with a cut-out under axial compression was demonstrated by numerical analysis. The composite materials treated were carbon-fiber/epoxy (CFRP) and glass-fiber/epoxy (GFRP) plates. The configuration of cut-out was a square hole having round corners or a circular hole which is centrally located in the FRP plate.
Because of the complexities of the problem, respective geometry and material properties, the finite element method with automatic mesh divisions was used both for the prebuckling stress state and the buckling phase. The buckling loads for various cut-out dimensions and buckling pattern modes for different aspect ratios of rectangular plates were elucidated in the present study.
