初期応力下の軸対称容器の横荷重による座屈

概要

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A procedure for the analysis of buckling of axisymmetric liquid storage tanks subjected to static lateral load is proposed. The procedures based on the expansion of local buckling mode using vibration modes calculated by FEM considering the effect of initial stress. Calculated natural frequencies of water-filled Al tank and buckling loads of empty or water containing polyester tanks under lateral end load are compared to experimental results. The comparisons show good agreement. During vibration tests of the water-filled Al tank using shaking table, two buckling modes were observed. The first is local elastic buckling at lower part of water level caused by negative pressure from water-shell interaction. The second is diamond buckling at fixed end. The first is simulated applying the pressure in static. Calculated buckling mode is very similar to observed one by high speed camera. The second is evaluated by the classical buckling stress.
社団法人日本機械学会の論文
1985-02-25