Investigation on Buckling Behavior of Cylindrical Liquid Storage Tanks Under Seismic
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Investigation on Buckling Behavior of Cylindrical Liquid Storage Tanks Under Seismic
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Investigation on Buckling Behavior of Cylindrical Liquid Storage Tanks Under Seismic Excitation: 2nd Report — Investigation on the Nonlinear Ovaling Vibration at the Upper Wall

Author: Hideyuki Morita, Tomohiro Ito, Koji Hamada, Akihisa Sugiyama, Yoji Kawamoto, Hideyasu Ogo and Eiji Shirai | Size: 1 MB | Format: PDF | Quality: Original preprint | Publisher: ASME | Year: 2003 | pages: 8


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When a thin walled cylindrical liquid storage tank suffers a large seismic base excitation, buckling phenomena such as elephant foot bulge at the bottom portion and nonlinear ovaling vibration at the upper portion shows nonlinearity between the input and response level and suddenly occurs for the excessive input level, thus will be called as “nonlinear ovaling vibration” hereafter in this paper, may be caused. In the 1st report, the elephant foot bulge phenomena and the liquid pressure effects were investigated. In this 2nd report of the series of studies, the effect of nonlinear ovaling vibration phenomena were investigated based on the dynamic buckling tests using scaled models of thin walled cylindrical liquid storage tanks for nuclear power plants. The mechanism and the effect of vertical excitation and liquid sloshing were also studied and discussed.

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