Numerical Investigation of an Optimum Ring Baffle Design to Optimize the Structural Strength of a Tank Subjected to Resonant Seismic Sloshing

Zulfiqar, Yasir; Hyder, M. Javed; Jehanzeb, Ahmad; Ahmad, Hafiz Waqar; Zulfiqar, Asim; Chaudry, Umer Masood; Jun, Tea‐Sung

doi:10.1080/10168664.2022.2029690

Cited by 2 publications

(1 citation statement)

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“…Gabbianelli et al [29] developed a numerical model in OpenSees FEM code and a comprehensive study on the evaluation of a suitable base isolator having the advantages of high load bearing and displacement capacity, oscillation period independence, and minimal torsional effects. Zulfiqar et al [30] numerically investigated the effects of resonant seismic sloshing on the structural response of full-scale baffled tank models and, among different ring baffle designs, explored the optimum baffle design, which increases the tank structural strength up to four times under El-Centro and Kocaeli earthquakes. Zulfiqar et al [31] performed the stress analysis of flat and conical roof cylindrical steel tanks under harmonic excitation and found that by modifying the roof design, the tank's structural safety increased up to 2.6 times as compared to a flat roof design.…”

Section: Introductionmentioning

confidence: 99%

Detailed Structural Analysis of Cylindrical Steel Tank Subjected to Various Seismic Peak Ground Values Using FSI Approach

Zulfiqar,

Ahmad

et al. 2023

Applied Mechanics

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The seismic analysis of ground-supported cylindrical steel tanks subjected to lateral harmonic displacement loadings has been carried out. This paper numerically evaluates the structural response of various tank geometries due to resonant seismic sloshing. The numerical investigation is performed using a two-way fluid structural interaction approach that couples computational fluid dynamics analysis with finite element transient structural analysis. The results of the analysis have been validated using Seismic Design Code (Eurocode 8, part 4). Regarding tank aspect ratio (H/D), five geometries covering slender, medium, and broad structures are analyzed under ten harmonic base excitations. All the geometries are excited at their first convective frequency, whose shape and magnitude are evaluated using modal analysis. The seismic response curves have been developed for each tank model, which reveal the complex and peculiar structural response. It is observed from the tanks’ seismic response that they undergo three transitional stress zones named safe, yielding, and failure zones. The critical loadings and failure duration have also been evaluated for each tank model. This will help to avoid future structural damage by designing liquid-containing structures based on evaluated seismic failure loads.

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Section: Introductionmentioning

confidence: 99%