Field Study and Evaluation of Buckling Behavior of Cylindrical Steel Tanks with Geometric Imperfections under Uniform External Pressure

2017 ◽  
Vol 30 (9) ◽  
Keyword(s):  
Field Study ◽  
External Pressure ◽  
Geometric Imperfections ◽  
Uniform External Pressure ◽  
Buckling Behavior ◽  
Steel Tanks ◽  
Cylindrical Steel Tanks ◽  
Cylindrical Steel

Stability Analysis of Floating-Roof Tanks under Differential Settlement

2010 ◽  
Vol 163-167 ◽  
pp. 55-60
Author(s):  
Yang Zhao ◽  
Xiang Lei ◽  
Xing Zhang
Keyword(s):  
Local Buckling ◽  
Structural Response ◽  
Nonlinear Behavior ◽  
Differential Settlement ◽  
Tank Wall ◽  
Buckling Behavior ◽  
Steel Tanks ◽  
Post Buckling ◽  
Cylindrical Steel Tanks ◽  
Cylindrical Steel

Vertical cylindrical steel tanks are sensitive to differential settlement beneath the tank wall. Most previous studies were based on idealized harmonic settlement, however, for thin shell structures of high nonlinear behavior, it is obviously inappropriate to obtain the results under real settlement by simple summation of harmonic solutions. Real settlement of steel tanks can be grouped into two types - global differential settlement and local differential settlement. This paper examines the nonlinear response and stability behavior of floating-roof steel tanks under both types of settlement. It is shown that, for tanks under global differential settlement, local buckling occurs at the eave ring, followed by a stable post-buckling behavior, and final failure is by overall buckling of the tank shell; while for tanks under local differential settlement, the structural response is related to the degree of localization. At highly localized settlement, local snap-through buckling occurs at the tank wall, but it does not lead to a serious consequence, and the post-buckling behavior can also be utilized in design.

scholarly journals The modal analysis of cylindrical steel tank with selfsupported roof filled with different level of liquid

2013 ◽  
Vol 12 (2) ◽  
pp. 205-212
Author(s):  
Daniel Burkacki ◽  
Michał Wójcik ◽  
Robert Jankowski
Keyword(s):  
Modal Analysis ◽  
Natural Frequencies ◽  
Environmental Disaster ◽  
Natural Modes ◽  
Liquid Products ◽  
Safety And Reliability ◽  
Steel Tank ◽  
Steel Tanks ◽  
Cylindrical Steel Tanks ◽  
Cylindrical Steel

In technical branches, such as chemical or petroleum industries, cylindrical steel tanks are essential structures used for storage of liquid products. Therefore, their safety and reliability is essential, because any failure might have dangerous consequences, in extreme cases may even lead to an environmental disaster. The aim of the presented paper is to show the results of the modal analysis concerning the cylindrical steel tank with self-supported roof which has been constructed in northern Poland. The investigation was carried out with the use of the FEM commercial computer program Abaqus. The values of natural frequencies, as well as the natural modes, for different levels of liquid filling (empty tank, partly filled and tank fully filled) were determined in the study. The results of the study clearly indicate that the increase in the liquid level leads to the substantial decrease in the natural frequencies of the structure.

Stability of Open‐Top Cylindrical Steel Tanks with Primary Stiffening Ring under Wind Loading

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 1781-1788
Author(s):  
Özer Zeybek ◽  
Cem Topkaya ◽  
J. Michael Rotter
Keyword(s):  
Wind Loading ◽  
Steel Tanks ◽  
Cylindrical Steel Tanks ◽  
Cylindrical Steel
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