Numerical study of base-isolated cylindrical liquid storage tanks using coupled acoustic-structural approach

Rawat, Aruna; Matsagar, Vasant; Nagpal, A. K.

doi:10.1016/j.soildyn.2019.01.005

Cited by 45 publications

(12 citation statements)

References 52 publications

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“…In the research using the distributed mass model [19][20][21][22][23][24][25][26][27], the finite element method is generally used to establish the model of the liquid storage tank for liquid-structure coupling analysis. e tank wall is always regarded as the structure element, and the liquid is regarded as the fluid element.…”

Section: Introductionmentioning

confidence: 99%

“…e dynamic characteristics and failure modes of the tank's structure were investigated by considering the rebar's effect. Aruna Rawat [24,25] investigated the three-dimensional ground-supported cylindrical and rectangular rigid liquid storage tanks filled with water and subjected to seismic base excitation. e analyses of the tanks were carried out using coupled acousticstructural and coupled Eulerian-Lagrangian approaches of the finite element method.…”

Section: Introductionmentioning

confidence: 99%

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Modeling Research and Test Verification of the Seismic Response of a Multistage Series Liquid Tank

Yao

Meng

Chu

et al. 2021

Shock and Vibration

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Liquid storage tanks are lifeline structures and strategically very important. Heavy damages or even collapse of these facilities subjected to strong earthquakes may cause disastrous consequences. In this paper, the seismic response of a multistage series liquid storage tank was simulated by a finite element method and verified by a scaled-down experiment. The structural flexibility of the tank and the liquid-structure coupling characteristics between the liquid and tank wall were considered in the research. A multimass-block and spring model was employed to be equivalent to the longitudinal vibration of the liquid in the storage tank. The relationships between the connection springs and the elements of the stiffness matrix were explicitly deduced. The seismic response analysis of a four-stage series liquid tank was carried out, and the acceleration response, the stress response of the tank, and the vertical vibration of the liquid were obtained. The experimental results are in good agreement with the simulation results, which verifies the effectiveness of the modeling method in this paper.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling Research and Test Verification of the Seismic Response of a Multistage Series Liquid Tank

Yao

Meng

Chu

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…With the development of economy and society, more and more liquid storage tanks are built in seismically active areas, in extreme cases, these areas may also belong to strong wind areas, which leads to the threat of wind and earthquake to large-scale liquid storage tanks in the whole life cycle. Moreover, earthquake and wind-induced damage cases of liquid storage tanks are very common [1][2][3], two cases corresponding to earthquake and wind are shown in Figure 1. The destruction of the liquid storage tank not only involves the structure itself, but it will also cause huge economic losses, environmental pollution, fire, and so on, and even threaten people's safety.…”

Section: Introductionmentioning

confidence: 99%

“…The destruction of the liquid storage tank not only involves the structure itself, but it will also cause huge economic losses, environmental pollution, fire, and so on, and even threaten people's safety. Dynamic responses of liquid storage tanks during earthquakes involves shell-liquid interaction, Rawat et al [3] used a coupled acoustic-structural (CAS) approach in the FEM for the analysis of the tanks with rigid and flexible walls with varying parameters. Kotrasov et al [4] simulated the interaction between structure and liquid on the contact surface based on the bidirectional fluid-solid coupling technique and studied the dynamic responses of liquid storage tanks by finite element method.…”

Section: Introductionmentioning

confidence: 99%

“…In view of the structural dynamic response under the combined action of wind and earthquake, Hong and Gu [19] found that for high-flexible structures whose horizontal loads are controlled by wind load, the combined total loads after considering wind and earthquake loads may be more disadvantageous than those when considering wind loads in seismic design. Ke et al [20] obtained Dynamic responses of liquid storage tanks during earthquakes involves shell-liquid interaction, Rawat et al [3] used a coupled acoustic-structural (CAS) approach in the FEM for the analysis of the tanks with rigid and flexible walls with varying parameters. Kotrasov et al [4] simulated the interaction between structure and liquid on the contact surface based on the bidirectional fluid-solid coupling technique and studied the dynamic responses of liquid storage tanks by finite element method.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Responses of Liquid Storage Tanks Caused by Wind and Earthquake in Special Environment

2019

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Based on potential flow theory and arbitrary Lagrangian–Eulerian method, shell–liquid and shell–wind interactions are solved respectively. Considering the nonlinearity of tank material and liquid sloshing, a refined 3-D wind–shell–liquid interaction calculation model for liquid storage tanks is established. A comparative study of dynamic responses of liquid storage tanks under wind, earthquake, and wind and earthquake is carried out, and the influences of wind speed and wind interference effect on dynamic responses of liquid storage tank are discussed. The results show that when the wind is strong, the dynamic responses of the liquid storage tank under wind load alone are likely to be larger than that under earthquake, and the dynamic responses under wind–earthquake interaction are obviously larger than that under wind and earthquake alone. The maximum responses of the tank wall under wind and earthquake are located in the unfilled area at the upper part of the tank and the filled area at the lower part of the tank respectively, while the location of maximum responses of the tank wall under wind–earthquake interaction is related to the relative magnitude of the wind and earthquake. Wind speed has a great influence on the responses of liquid storage tanks, when the wind speed increases to a certain extent, the storage tank is prone to damage. Wind interference effect has a significant effect on liquid storage tanks and wind fields. For liquid storage tanks in special environments, wind and earthquake effects should be considered reasonably, and wind interference effects cannot be ignored.

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Numerical model and effect of site condition on the coupled dynamic characteristics of water storage tank of AP1000 shield building

Liu,

Li,

et al. 2024

Earthquake Engineering and Resilience

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Since the Fukushima nuclear incident in 2011, the focus on nuclear safety has intensified significantly, leading to heightened demands for nuclear power plant modeling to go beyond the mere dynamic analysis of soil–structure interaction (SSI) or fluid–structure interaction (FSI). In current engineering practice, FSI is typically described using simplified forms, such as loads or added mass. However, this approach lacks a comprehensive analytical framework that integrates refined FSI analysis with soil–structure interaction (SSI). This study analyzes the dynamic response of the nuclear island structural system using a fully coupled fluid–structure–soil interaction (FSSI) model. The effectiveness and validity of the model are verified through case comparisons. Simulations were conducted using the parameters of five different types of nuclear power engineering sites for both homogeneous and layered foundations. The results indicated that the hydrodynamic pressure response and acceleration amplification of layered foundations significantly exceeded those of homogeneous foundations, underscoring the importance of considering layered sites in the comprehensive complex modeling of nuclear power projects.

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Numerical study of base-isolated cylindrical liquid storage tanks using coupled acoustic-structural approach

Cited by 45 publications

References 52 publications

Modeling Research and Test Verification of the Seismic Response of a Multistage Series Liquid Tank

Modeling Research and Test Verification of the Seismic Response of a Multistage Series Liquid Tank

Dynamic Responses of Liquid Storage Tanks Caused by Wind and Earthquake in Special Environment

Numerical model and effect of site condition on the coupled dynamic characteristics of water storage tank of AP1000 shield building

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