Sloshing behavior of floating-roof oil storage tanks

Sakai, Fujikazu; Nishimura, Makoto; Ogawa, Hiroshi

doi:10.1016/0045-7949(84)90217-7

Cited by 61 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results show that the natural periods of the floating roof, the circular plate and the free fluid surface are approximately identical. According to Sakai (5) , the 1st natural periods of a floating roof and a free fluid surface become identical regardless of the roof stiffness. In high-order modes, if the roof stiffness is high, the natural period will tend to become short.…”

Section: Eigenvalue Analysismentioning

confidence: 99%

“…With respect to the sloshing response of the elastic floating roof, the hydrodynamic coupling of fluid and the floating roof must be taken into consideration. Here, Sakai reported a solution using the Ritz method (5) , and Matsui later proposed analytical solutions for the sloshing in the case of elastic circular plates with and without a ring attached to the perimeter of the plate (6)- (8) .…”

Section: Introductionmentioning

confidence: 99%

“…These characteristics provide engineers with important information with regard to design. As mentioned above, Sakai (5) and Matsui (6) performed linear analyses. However, useful information on the seismic design of floating roofs can be obtained if the box-shaped pontoon is precisely modeled using an axisymmetric shell.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Axisymmetric Finite Element Analysis for Sloshing Response of Floating Roofs in Cylindrical Storage Tanks

Yoshida

Sekine

Mitsuta

2010

JEE

View full text Add to dashboard Cite

Floating roofs are widely used to prevent evaporation of the contents of large oil storage tanks. The 2003 Tokachi-Oki earthquake caused severe damage to floating roofs due to liquid sloshing. Establishing the structural integrity of floating roofs subjected to sloshing is an urgent issue for the petrochemical and oil refining industries. The present paper proposes an axisymmetric finite element analysis for the sloshing response of floating roofs in cylindrical storage tanks. The hydrodynamic coupling of the fluid and the floating roof under seismic excitation is taken into consideration in the analysis. The fluid is assumed to be incompressible and inviscid, and the roof is assumed to be linear elastic. In addition, the sidewall and the bottom are assumed to be rigid. The theory for the finite element analysis, in which the behavior of the fluid is formulated in terms of dynamic pressure using the Eulerian approach, is proposed. The basic vibration characteristics of the floating roof, such as the natural frequencies and vibration modes, can be obtained from this analysis. These characteristics provide engineers with important information on the floating roof design.

show abstract

Section: Eigenvalue Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Axisymmetric Finite Element Analysis for Sloshing Response of Floating Roofs in Cylindrical Storage Tanks

Yoshida

Sekine

Mitsuta

2010

JEE

View full text Add to dashboard Cite

show abstract

“…With respect to the sloshing response of the floating roof as an elastic circular plate, the hydrodynamic coupling of fluid and the floating roof must be taken into consideration. Here, Sakai reported a solution using the Ritz method (6) , and Matsui later proposed analytical solutions for the sloshing in the case of elastic circular plates without (7) and with (8), (9) a ring attached to the perimeter of the plate.…”

Section: Introductionmentioning

confidence: 99%

Sloshing Characteristics of Single-Deck Floating Roofs in Cylindrical Storage Tanks

Yoshida

Akamatsu

Sekine

et al. 2010

JEE

View full text Add to dashboard Cite

Floating roofs are widely used to prevent evaporation of the contents of large oil storage tanks. The 2003 Tokachi-Oki earthquake caused severe damage to floating roofs due to liquid sloshing. Establishing the structural integrity of floating roofs subjected to sloshing is urgent issue for the petrochemical and oil refining industries. The present paper describes the sloshing characteristics of single-deck floating roofs in cylindrical storage tanks. The hydrodynamic coupling of the fluid and the floating roof is taken into consideration in the axisymmetric finite element analysis. The fluid is assumed to be incompressible and inviscid, and the roof is assumed to be linear elastic. In addition, the sidewall and the bottom are assumed to be rigid. The basic vibration characteristics of the floating roof during sloshing, such as the natural frequencies and vibration modes, are investigated. These characteristics provide engineers with important information on the floating roof design.

show abstract

“…Employing variational principle, Sakai et al [3] calculated the natural frequencies of oating roofs. Isshiki and Nagata [4] derived the governing equations of a oating plate by assuming Hamilton's principle for plate and Kelvin's principle for water.…”

Section: Introductionmentioning

confidence: 99%

Stress Analyses in Single Deck and Double Deck Floating Roofs Subjected to Earthquake Ground Motions

2017

View full text Add to dashboard Cite

Abstract. This paper investigates the stress patterns in circular single-and double-deck oating roofs excited by earthquake ground motions. Variational formulation is employed to derive the governing equations. Response of the oating roofs to di erent classes of ground motions including near-eld and far-eld records is evaluated. Results indicate that far-eld earthquakes produce larger wave elevation but smaller bending stresses in the oating roof. Moreover, the bending stresses in double-deck roofs emerge in a smooth and approximately symmetric pattern with a peak around the mid-span radius while the peak values of bending stress in single-deck oating roofs occur at the vicinity of deck center and at the deck-pontoon interface. The results can have practical implications in the design process of oating-roof cylindrical tanks.

show abstract

Sloshing behavior of floating-roof oil storage tanks

Cited by 61 publications

References 0 publications

Axisymmetric Finite Element Analysis for Sloshing Response of Floating Roofs in Cylindrical Storage Tanks

Axisymmetric Finite Element Analysis for Sloshing Response of Floating Roofs in Cylindrical Storage Tanks

Sloshing Characteristics of Single-Deck Floating Roofs in Cylindrical Storage Tanks

Stress Analyses in Single Deck and Double Deck Floating Roofs Subjected to Earthquake Ground Motions

Contact Info

Product

Resources

About