有円孔アングルプライFRP積層板の単軸圧縮座屈強度

概要

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The buckling behavior associated with FRP plates with cut-out is an interesting problem for the strength of the light structural members design. Buckling value of FRP plate is influenced not only by material component but by fiber orientated angle and cut-out. In the present study, the buckling analyses of the angle-ply infinite laminated rectangular thin plates with a hole subjected to uniaxial compression are numerically calculated using the Finite Element Method. Composite materials are treated as carbon-fiber/epoxy(CFRP)and glass-fiber/epoxy(GFRP)plates. The configuration of cut-out is a circular hole which is located at the center of the plate. Analyses are demonstrated for different hole sizes each for various lamination angles and their buckling deformation modes which depend on the effect of the aspect ratio of the plate are examined. It was found that the buckling values became high as the lamination angles θapproached to±45°. Further, in the case of rectangular plates, the high buckling values were obtained for the aspect ratio a/b ranging from 1.5 to 2.0 for every different hole size.
東海大学の論文