Cylindrical tanks with conical roof shells are utilized as oil storage tanks and for some containment vessels. It is known that conical roof shells and torispherical shells subjected to static internal pressure buckle into a displaced shape with circumferential waves caused by an instability condition commonly called bifurcation buckling. It can be important to obtain the dynamic bifurcation buckling load in designing conical roof shells. In this paper, the bifurcation buckling pressure is calculated for dynamic pressure during accident conditions as characterized by step pressure loading, ramp pressure loading and pulse pressure loading. The minimum bifurcation buckling pressure is shown to be a linear function of radius-to-thickness ratio of the shell in a linear fashion on a logarithmic scale. The minimum bifurcation buckling pressure is minimum for conical roof shells subjected to the step loading. The minimum dynamic bifurcation buckling pressure for step loading is about half of the static bifurcation buckling pressure.
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February 2003
Technical Papers
Bifurcation Buckling Analysis of Conical Roof Shell Subjected to Dynamic Internal Pressure by the Finite Element Method
Seiya Hagihara,
Seiya Hagihara
Department of Mechanical Engineering, Saga University, Saga 840-8502, Japan
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Noriyuki Miyazaki
Noriyuki Miyazaki
Department of Chemical Engineering, Kyushu University, Fukuoka, 812-8581 Japan
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Seiya Hagihara
Department of Mechanical Engineering, Saga University, Saga 840-8502, Japan
Noriyuki Miyazaki
Department of Chemical Engineering, Kyushu University, Fukuoka, 812-8581 Japan
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, July 27, 2001; revised manuscript received October 25, 2002. Associate Editor: G. L. Hollinger.
J. Pressure Vessel Technol. Feb 2003, 125(1): 78-84 (7 pages)
Published Online: January 31, 2003
Article history
Received:
July 27, 2001
Revised:
October 25, 2002
Online:
January 31, 2003
Citation
Hagihara, S., and Miyazaki, N. (January 31, 2003). "Bifurcation Buckling Analysis of Conical Roof Shell Subjected to Dynamic Internal Pressure by the Finite Element Method ." ASME. J. Pressure Vessel Technol. February 2003; 125(1): 78–84. https://doi.org/10.1115/1.1533801
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