補強円孔を有する正方形板の弾塑性せん断座屈に対する孔縁の補強効果

概要

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Elasto-plastic shear buckling of square plates containing reinforced circular holes is investigated analytically. The perforated plates are subjected to uniform shear stress or uniform shear deformation, and are simply supported, clamped or mixed supported on all four edges. Ratios of the hole diameter to the plate width, d/l , are 0.15, 0.3, 0.5, 0.7 and 0.85. The influence of area and shape of reinforcement around the circular hole and loading condition on buckling strength is considerd. Relationships are presented between the buckling strength of plates, the size of the hole, width and depth of the reinforcing ring. For the elastic buckling, increasing the depth is much more effective than the width. The reinforcement is slightly effective in uniform shear stress compared to the uniform shear deformation at the simply supported plates and it is reverse in the clamped plates. In order to increase the elasto-plastic buckling strength of the perforated plates more than the unperforated plates, it is the most effective that the width and the depth of reinforcement are three and four times of the plate thickness respectively.
福山大学の論文