Dynamic buckling of anchored steel tanks subjected to horizontal earthquake excitation

Virella, Juan C.; Godoy, Luis A.; Suárez, Luis E.

doi:10.1016/j.jcsr.2005.10.001

Cited by 96 publications

(51 citation statements)

References 18 publications

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“…Copyright: ©2017 Abderrahmen et al This type of buckling has been obtained by several authors Natsiavas & Babcock [13] and also by Virella et al [15]. Natsiavas and Babcock [13] studied and characterized this type of buckling.…”

Section: /7mentioning

confidence: 74%

“…In this work, the tank used has been treated by several authors [8,15]. The tall tank has a height to a radius ratio (H/R) of 2.…”

Section: Numerical Modelmentioning

confidence: 99%

“…The diamond buckling is an elastic instability phenomenon due to the presence of high axial compressive stresses [8][9][10][11][12][13][14]. The first numerical research estimated the critical PGA that causes the dynamic buckling is due to Virella et al [15]. Using the technique of the added mass modeled by ABAQUS code, they examined the PGA which induces the buckling of a set of anchored cylindrical tanks.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Buckling of Cylindrical Storage Tanks during Earthquake Excitations

Abderrahmen¹,

Djermane²

2017

MOJCE

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The behavior of storage tanks' analysis in seismic areas is of major importance because of the strategic nature of these works. The steel cylindrical tanks are the most susceptible to damage due to dynamic buckling during earthquakes. In this study, three criteria are used to estimate the critical peak ground acceleration caused the tank instability. The liquid inside the tank was modeled using specific Ansys's finite elements and fluid-structure interaction. The calculation includes modal and time history analysis, including material and geometric non-linearity. The result values are compared with standard code previsions as well as the results of previous numerical research, and show the need to improve code provisions.

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Section: /7mentioning

confidence: 74%

“…In this work, the tank used has been treated by several authors [8,15]. The tall tank has a height to a radius ratio (H/R) of 2.…”

Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Buckling of Cylindrical Storage Tanks during Earthquake Excitations

Abderrahmen¹,

Djermane²

2017

MOJCE

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“…(10) can be substituted in Eq. (11), and the equations for and are thus expressed in terms of unknown and the known displacements , velocities , and accelerations at the time t n . The equations for and are then substituted in Eq.…”

Section: Modal Analysismentioning

confidence: 99%

Stability Analysis of Cylindrical Tanks under Static and Earthquake Loading

Jerath¹,

Lee²

2015

JCEA

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Large thin walled cylindrical above ground tanks have become more susceptible to failure by buckling during earthquakes. In this study, three different geometries of tanks with H/D (height to diameter) ratios of 2.0, 0.56, 1.0, and D/t (depth to thickness) ratios of 960.0, 1,706.67 and 640.0 respectively were analyzed for stability when subjected to the El Centro earthquake at the base. The Budiansky and Roth procedure was used to find the buckling loads when the tanks were empty and when they were filled with liquid up to 90% of their depth. Also, nonlinear time history analysis using ANSYS finite element computer program was performed. Analysis results show that the dynamic buckling occurs for empty tanks at very high PGA (peak ground accelerations) which are unrealistic even for major earthquakes. Furthermore, when the tanks filled with water up to 90% of its height, analysis results show that when the H/D ratio reduced by two times (i.e., from 2 to 1), the PGA for the buckling increased by six times (increase from 0.25g to 1.5g). Hence, H/D ratio plays an important role in the earthquake stability design of over ground steel tanks.

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“…The spherical tank is loaded with the fluid pressure, hydrostatic pressure [5] and forces that arise due to its own weight. In addition to these constant loads, other loads may occur due to the action of wind force [6], snow [7] as well as seismic loads [8,9]. To prevent leakage or fire of those hazardous gases, detection of damage in tank structure is crucial [5].…”

Section: Introductionmentioning

confidence: 99%

Analytical, numerical and experimental stress assessment of the spherical tank with large volume

2015

Teh. vjesn.

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Original scientific paper This paper presents designing of spherical tank using combination of analytical procedure with FEM analysis and experimental testing in order to minimize design time and verify design strength. Analytical procedure for calculation of the tank strength in the initial stages of design process is briefly presented. Based on analytical results, tank is dimensioned and FEM model is created. FEM analysis is used to identify areas with high concentration of stresses. FEM results showed that equivalent value of stress at the points of spherical tank support exceeds the values of yield stress, but this exceedance is not significant and in very small area, so overall design was deemed worthy. Experimental measurements verified FEM results that it is not necessary to reinforce the spherical tank at the points of support. After 8 months experiments were repeated giving the same results as the original measurements, thus justifying decision not to reinforce tank supports. Keywords: analytical stress assessment; experimental testing; Finite Element Method (FEM); spherical tank Analitička, numerička i eksperimentalna procjena naprezanja kuglastog spremnika velikog obujmaIzvorni znanstveni članak U radu se opisuje konstruiranje kuglastog spremnika kombinacijom analitičkog postupka s FEM analizom i eksperimentalnim testiranjem kako bi se smanjilo vrijeme konstruiranja i provjerila proračunska čvrstoća. Kratko je prikazan analitički postupak proračuna čvrstoće spremnika u početnim stadijima konstruiranja. Na temelju analitičkih rezultata određuju se dimenzije spremnika i kreira FEM model. Za prepoznavanje područja s visokom koncentracijom naprezanja koristi se FEM analiza. FEM rezultati su pokazali da ekvivalentna vrijednost naprezanja na potpornim točkama spremnika prelazi vrijednosti granice popuštanja, ali to nije značajno i na veoma je maloj površini pa se cjelokupna konstrukcija smatra važećom. Eksperimentalna su mjerenja potvrdila FEM rezultate da nije potrebno pojačati kuglasti spremnik na potpornim točkama. Nakon 8 mjeseci eksperimenti su bili ponovljeni, dajući iste rezultate kao i originalna mjerenja i tako potvrdili odluku da se ne pojačavaju potporne točke spremnika.Ključne riječi: analitička procjena naprezanja; eksperimentalno testiranje; kuglasti spremnik; metoda konačnih elemenata (FEM)

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Dynamic buckling of anchored steel tanks subjected to horizontal earthquake excitation

Cited by 96 publications

References 18 publications

Dynamic Buckling of Cylindrical Storage Tanks during Earthquake Excitations

Dynamic Buckling of Cylindrical Storage Tanks during Earthquake Excitations

Stability Analysis of Cylindrical Tanks under Static and Earthquake Loading

Analytical, numerical and experimental stress assessment of the spherical tank with large volume

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