シングルデッキ形浮屋根式円筒タンクのスロッシング特性 : 動液圧モードと浮屋根強度モード(機械力学,計測,自動制御)

概要

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The floating roofs are widely used to prevent evaporation of content in the large oil storage tanks. The 2003 Tokachi-Oki earthquake caused severe damage to the floating roofs due to liquid sloshing. The structural integrity of the floating roofs for the sloshing is urgent issue to establish in the petrochemical and oil refining industries. The authors introduced the axisymmetric linear FEA theory for the sloshing of the floating roofs in the previous paper. It was assumed that the fluid was incompressible and inviscid, and the roof was linear elastic while the sidewall and the bottom were rigid. The hydrodynamic coupling of fluid and floating roof was also taken into consideration in the analysis. The authors have reported the natural periods and the natural vibration modes as the sloshing characteristics of the single deck floating roofs, next. This paper presents the dynamic pressure modes and the strength modes of the single deck floating roofs in cylindrical storage tanks as the other sloshing characteristics. These will give engineers important information on the floating roof design.
社団法人日本機械学会の論文
2009-02-25