Dealing with the Effect of Air in Fluid Structure Interaction by Coupled SPH-FEM Methods

Fragassa, Cristiano; Topalović, Marko; Pavlović, Ana; Vulović, Snežana

doi:10.3390/ma12071162

Cited by 23 publications

(12 citation statements)

References 45 publications

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“…Liang and Chen [31] applied the SPH-FEM method to soil-structure interaction problems during the seismic analysis of a rectangular underground structure, and results indicated that the distribution and magnitude of seismic earth pressure were influenced by the magnitude of soil deformation. Fragassa et al [32] analyzed the effect of air in FSI problems by coupling FEM and SPH. ey concluded that air had little effect on stress prediction, but it had a greater effect on the behaviour of the structure after the initial fluid impact.…”

Section: Introductionmentioning

confidence: 99%

Seismic Analysis of a Large LNG Tank considering the Effect of Liquid Volume

Zhao

et al. 2020

Shock and Vibration

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Large Liquefied Natural Gas (LNG) tanks are prone to damage during strong earthquakes, and accurate seismic analysis must be performed during the design phase to prevent secondary disasters. However, the seismic analysis of large LNG tanks is associated with high computational requirements, which cannot be satisfied by the calculation efficiency of traditional analytical techniques such as the Coupled Eulerian–Lagrangian (CEL) method. Thus, this paper aims to employ a less computationally demanding algorithm, the Smoothed Particle Hydrodynamics-Finite Element Method (SPH-FEM) algorithm, to simulate large LNG tanks. The seismic response of a 160,000 m3 LNG prestressed storage tank is evaluated with different liquid depths using the SPH-FEM algorithm, and simulation results are obtained with excellent efficiency and accuracy. In addition, large von Mises stress at the base of the tank indicates that strong earthquakes can severely jeopardize the structural integrity of large LNG tanks. Therefore, the SPH-FEM algorithm provides a feasible approach for the analysis of large liquid tanks in seismic engineering applications.

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Section: Introductionmentioning

confidence: 99%

Seismic Analysis of a Large LNG Tank considering the Effect of Liquid Volume

Zhao

et al. 2020

Shock and Vibration

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“…are still vivid (alive) and up-to-date in the scientific discourse. Recent works on driven pile effects on nearby piles [17,18], and even a sophisticated analysis on the effect of "air in groundwater"-structure interaction [19] (during pile driving) confirms the necessity of developing knowledge on various aspects of this phenomena.…”

Section: Introductionmentioning

confidence: 95%

Numerical Modelling of Various Aspects of Pipe Pile Static Load Test

2021

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Due to the development of dedicated software and the computing capabilities of modern computers, the application of numerical methods to analyse more complex geotechnical problems is becoming increasingly common. However, there are still some areas which, due to the lack of unambiguous solutions, require a more thorough examination, e.g., the numerical simulations of displacement pile behaviour in soil. Difficulties in obtaining the convergence of simulations with the results of static load tests are mainly caused by problems with proper modelling of the pile installation process. Based on the numerical models developed so far, a new process of static load test modelling has been proposed, which includes the influence of pile installation on the soil in its vicinity and modelling of contact between steel pile and the soil. Although the presented method is not new, this is relevant and important for practitioners that may want to improve the design of displacement piles. The results of the numerical calculations were verified by comparing them with the results of pipe pile field tests carried out in a natural scale on the test field in Southern Poland.

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“…Figure 1 shows the generated 3D SPH-FEM model for pile punching, which consists of piles and soils. Symmetric modelling capabilities play an important role in numerical analysis to save the computational effort [26,27]. However, in certain cases, the symmetric boundary conditions cannot be applied due to the presence of non-symmetries in loading, material and boundary conditions [28].…”

Section: Establishment Of the 3d Sph-fem Model For Pile Punchingmentioning

confidence: 99%

Impact of Pile Punching on Adjacent Piles: Insights from a 3D Coupled SPH-FEM Analysis

2020

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Pile punching (or driving) affects the surrounding area where piles and adjacent piles can be displaced out of their original positions, due to horizontal loads, thereby leading to hazardous outcomes. This paper presents a three-dimensional (3D) coupled Smoothed Particle Hydrodynamics and Finite Element Method (SPH-FEM) model, which was established to investigate pile punching and its impact on adjacent piles subjected to lateral loads. This approach handles the large distortions by avoiding mesh tangling and remeshing, contributing greatly high computational efficiency. The SPH-FEM model was validated against field measurements. The results of this study indicated that the soil type in which piles were embedded affected the interaction between piles during the pile punching. A comprehensive parametric study was carried out to evaluate the impact of soil properties on the displacement of piles due to the punching of an adjacent pile. It was found that the interaction between piles was comparatively weak when the piles were driven in stiff clays; while the pile-soil interactions were much more significant in sandy soils and soft clays.

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Dealing with the Effect of Air in Fluid Structure Interaction by Coupled SPH-FEM Methods

Cited by 23 publications

References 45 publications

Seismic Analysis of a Large LNG Tank considering the Effect of Liquid Volume

Seismic Analysis of a Large LNG Tank considering the Effect of Liquid Volume

Numerical Modelling of Various Aspects of Pipe Pile Static Load Test

Impact of Pile Punching on Adjacent Piles: Insights from a 3D Coupled SPH-FEM Analysis

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