抄録
Numerical analyses the Finite Element Method have been carried out on the buckling strength and stress concentration in cross-ply laminated FRP plates with a reinforced square or circular cut-out under axial compression. The cross-ply plates used carbon-fiber/epoxy (CFRP) and glass-fiber/epoxy (GFRP). As one of the succesful ways in order to recover the buckling strength of the plate with a cut-out, the plate around the cut-out is reinforced by thickning the annular area. The result for a FRP Plate is compared with that for an isotropic plate. For a FRP Plate, the higher the fiber reinforcement, the more effective of the recovery of the buckling value.
