開孔部補強ＦＲＰ板の軸圧縮座屈強度　　ダブラ形補強部を施した有孔正方形板の応力集中と座屈

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  • Buckling strength of FRP plates with a reineforced cut-out under axial compression. Stress concentration and buckling of square plates with a cut-out having doubler type reinforcement.
  • カイコウブ ホキョウ FRPバン ノ ジク アッシュク ザクツキョウド ダブラ

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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.

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