ニ軸引張りを受ける有角孔FRP平板の応力集中 : アングルプライ積層板とクロスプライ積層板の場合

概要

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The stress concentration in FRP plates with a cut-out is an interesting problem in structural members design. The plates with a hole under uniaxial tension have been treated in detail. In this study, the stress analyses of the FRP square plates with a cut-out under biaxial tension are worked out by an approximate approach using the Finite Element Method. The costituents of plates have two cases of angle-ply and cross-ply laminations, and composite materials are treated as carbon-fiber/epoxy (CFRP) and glass-fiber/epoxy (GFRP) plates. The configuration of the cut-out is a square hole having rounded corners which is centrally located in the plate. Numerical approaches are carried out on each of the lamination angles, cut-out configurations and load conditions, and the stress distributions around a square hole in the plates are examined. Further, the effective parameters for relaxing stress concentrations can be obtained.
東海大学の論文