Damage detection in elevated spherical containers partially filled with liquid

Curadelli, Oscar

doi:10.1016/j.engstruct.2011.05.023

Cited by 13 publications

(8 citation statements)

References 22 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, and the deviations from the results obtained analytically and by using the FEM model in relation to the results obtained experimentally are presented in Tab. 5.…”

Section: Resultsmentioning

confidence: 99%

“…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]. However, good tank design, and adhering to safety protocols can prevent critical damage from ever occurring in tank structure.…”

Section: Introductionmentioning

confidence: 99%

“…These highly flammable gases need to be stored in tanks designed with safety as their upmost priority [4]. 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].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

2015

Teh. vjesn.

View full text Add to dashboard Cite

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)

show abstract

“…4, and the deviations from the results obtained analytically and by using the FEM model in relation to the results obtained experimentally are presented in Tab. 5.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

2015

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…The works by Curadelli and Ambrosini (2011) and Zhou et al (2010) explore the extent to which the presence of structural damage can be detected by monitoring changes in modal parameters between the undamaged (perfect) and a damaged, fluid-filled structure. If damage identification can be classified into four levels (Rytter, 1993):…”

Section: Background and Motivationmentioning

confidence: 99%

“…Much of the research involving damage detection within the context of FSI and shell-type structures has focused on structures that are filled (either completely or partially) with fluid, such as spherical storage tanks (Curadelli and Ambrosini, 2011), composite fuel tanks (Zhou et al, 2010), and cylindrical laminated composite shells . The works by Curadelli and Ambrosini (2011) and Zhou et al (2010) explore the extent to which the presence of structural damage can be detected by monitoring changes in modal parameters between the undamaged (perfect) and a damaged, fluid-filled structure.…”

Section: Background and Motivationmentioning

confidence: 99%

Stochastic identification of the structural damage condition of a ship bow section under model uncertainty

Reed

Earls

2015

Ocean Engineering

View full text Add to dashboard Cite

a b s t r a c tA accurate, quantifiable means of assessing structural damage condition are paramount for maintaining the structural integrity of ship hull forms. Toward this end, precise knowledge of the location and magnitude of any imperfections (i.e. geometric imperfections in the form of denting and corrosion patches) must be determined, along with concomitant uncertainties accompanying such predictions. The current paper describes a non-contact approach to identifying and characterizing such imperfections within the submerged bow section of a representative ship hull. By monitoring the pressure field local to the acoustically excited hull section, it is shown how the resulting data can be used to identify the parameters describing the structural damage field. In order to perform the identification, a fluidstructure model that predicts the spatio-temporal pressure field is required. A Bayesian, reversible jump Markov chain Monte Carlo approach is then used to generate the imperfection parameter estimates and quantify the uncertainty in those estimates. This approach is particularly appealing as it does not allow for the damage model to be explicitly known a priori. Convergence of the Markov chains is assessed, and estimates of the Monte Carlo standard error (MCSE) are provided.

show abstract

Mechanical modeling, seismic fragility, and correlation issues for groups of spherical pressure vessels

2023

View full text Add to dashboard Cite

A roadmap is outlined for determining comprehensive seismic fragility curves for (single or groups of) spherical pressure vessel structures commonly found in oil refineries. The developed modeling techniques aim to strike a balance between accuracy and computational efficiency, with a focus on capturing the most pertinent failure modes relevant to these structural types. First, a set of “partial” fragilities is determined based on each vessel’s fill ratio, as the response varies substantially depending on the amount of liquid content. Considering that a seismic assessment process invariably involves simultaneous consideration of such partial fragilities, a Monte Carlo-based approach is employed for their combination. The results naturally depend on the level of correlation employed, but can be almost perfectly matched by simpler analytical methods in the edge cases of full and zero correlation.

show abstract

Damage detection in elevated spherical containers partially filled with liquid

Cited by 13 publications

References 22 publications

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

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

Stochastic identification of the structural damage condition of a ship bow section under model uncertainty

Mechanical modeling, seismic fragility, and correlation issues for groups of spherical pressure vessels

Contact Info

Product

Resources

About