Strengthening of Cylindrical Steel Water Tank Under the Seismic Loading

Çelik, Ali İhsan; Köse, Mehmet Metin; Akgül, Tahir; Apay, Ahmet Celal

doi:10.17780/ksujes.441831

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…After a sensitivity analysis, the model meshing with finite elements follows an induced regular meshing pattern according to geometry and fitting. A study on the FE solution convergence is conducted for the sectorised tank mesh model considering different number of shell and frame elements until the difference between two consecutive models become negligible 26 . For the external cylinder, the first row of finite elements has a height of 54.75 mm, and the width is obtained by dividing the perimeter into 144 angular sectors, every 2.5°, which leads to a width of 100 mm.…”

Section: Methodology and Structural Configurationmentioning

confidence: 99%

“…A study on the FE solution convergence is conducted for the sectorised tank mesh model considering different number of shell and frame elements until the difference between two consecutive models become negligible. 26 For the external cylinder, the first row of finite elements has a height of 54.75 mm, and the width is obtained by dividing the perimeter into 144 angular sectors, every 2.5 • , which leads to a width of 100 mm. The following rows in the tank height to the ridge have a height of 84.25 mm for each element, providing 213 finite elements per column.…”

Section: Meshingmentioning

confidence: 99%

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Analysis and design of a vertical sectored tank

Ferrer Gisbert,

Ferrán Gozálvez

et al. 2023

Engineering Reports

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This article describes the conceptual design and the structural analysis of a vertical cylindrical partitioned tank for an international chemical company. Vertical cylindrical tanks are commonly used in the chemical industry worldwide as vessels to contain liquids. Most of these plants have reduced area for the installation of the container tanks. Many of them need to renew their manufacturing process according to the new technologies and requirements. In addition, in some cases, the preparation of mixtures is carried out on small surfaces. All this factors led to the idea of designing a vertical sectorised tank, considering that alternative hydrostatic pressure cases can lead to eccentric loads on the upper surfaces. Therefore, bending stresses and compression and tension stresses will occur. A Finite Element Method calculation was performed to determine the wall thickness fulfilling the structural requirements for two distinguishing design alternatives. This article describes the particular models designed and the detailed FEM simulation and mechanical calculation carried out to determine the optimized solution of partitioned tanks with a diamond‐shaped inner bracing system that manages to meet all the structural, manufacturing, constructive and environmental needs with a target thickness of 12 mm.

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Section: Methodology and Structural Configurationmentioning

confidence: 99%

Section: Meshingmentioning

confidence: 99%

Analysis and design of a vertical sectored tank

Ferrer Gisbert,

Ferrán Gozálvez

et al. 2023

Engineering Reports

View full text Add to dashboard Cite

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“…Çelik et al They proposed an epoxy-carbon coating method to improve the seismic performance of cylindrical steel tanks. They stated that the Equivalent (von-Mises) stresses decreased significantly after the tank was covered with epoxy-carbon composite material [19]. Rawat et al The swash displacement and bottom shear time history responses were evaluated for 3D tanks subjected to harmonic unidirectional ground motions.…”

Section: Introductionmentioning

confidence: 99%

Seismic Analysis Of Oil Storage Tanks With Different Geometries

2024

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Oil storage tanks must be designed to withstand dynamic and seismic loads. It is very important to ensure the safety of oil tanks with large volumes under earthquakes. During the earthquake, the land surface moves in all directions and as a result, the tank is exposed to vibrations. Especially the movements parallel to the land surface create vibrations in the tank and cause unexpected deformations on the tank walls. In this study, possible deformations that may occur in oil tanks with three different geometries under seismic conditions are investigated depending on their filling ratios. In the study, a package program based on the finite element method was used. By observing the sample responses such as acceleration and deformation of the tested models, the results were compared and confirmed with previous studies. The results revealed a clear relationship between oil level, tank shape and mode change. The higher oil level offered higher natural frequency in any case. The response spectrum model observed an increase when the oil level increased.

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