Recent Advances in Seismic Response Analysis of Cylindrical Liquid Storage Tanks

Maekawa, Akira

doi:10.5772/28735

Cited by 10 publications

(15 citation statements)

References 35 publications

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“…The reason is that the liquid in the tank is continuous system with 2 infinite number of degrees of freedom, and its boundary conditions on the free surface are nonlinear and time-dependent. Nevertheless, loads created by high-amplitude liquid sloshing are so crucial for designing the containing vessel, its supports and payload limitations [6], that a number of approximate phenomenological models were suggested in order to get at least qualitative insight into this phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Internal Resonances and Dynamic Responses in Equivalent Mechanical Model of Partially Liquid-Filled Vessel

Farid

Gendelman

2017

Procedia Engineering

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The paper treats oscillations of a liquid in partially filled vessel under horizontal harmonic ground excitation. Such excitation may lead to hydraulic impacts. The liquid sloshing mass is modeled by equivalent pendulum, which can impact the vessel walls. We use parameters of the equivalent pendulum for well-explored case of cylindrical vessels. The hydraulic impacts are modeled by high-power potential function. Conditions for internal resonances are presented. A non-resonant behavior and dynamic response related to 3:1 internal resonance are explored. When the excitation amplitude exceeds a critical value, the system exhibits multiple steady state solutions. Quasi-periodic solutions appear in relatively narrow range of parameters. Numerical continuation links between resonant regimes found asymptotically for small excitation amplitude, and high-amplitude responses with intensive impacts. NonTrivial J J J J J J        Jwhere coefficients ij J are expressed as follows:

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Section: Introductionmentioning

confidence: 99%

Internal Resonances and Dynamic Responses in Equivalent Mechanical Model of Partially Liquid-Filled Vessel

Farid

Gendelman

2017

Procedia Engineering

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“…In all of these types of damage, because of the thinness of the TSTs, shell walls are susceptible to the elasto-plastic buckling and elastic buckling under various types of loads, especially dynamic loading. The buckling behaviors of TST shell walls have been investigated by several researchers [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The buckling failure modes can include shear buckling and bending buckling [5]. Some cases of bending buckling can be elephant foot buckling (EFB) or diamond buckling.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations of the Strengthening Effects of CFRP for Thin-Walled Storage Tanks under Dynamic Loads

2020

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In this study, the strengthening effects of different lamination conditions on carbon fiber reinforced polymers (CFRPs) for thin-walled storage tanks (TSTs) subjected to internal pressure under dynamic loads were experimentally investigated. A total of three small-scale models of TSTs were used for the investigation, including non-strengthened specimens, specimens strengthened with 0° CFRP layers, and specimens strengthened with 0°/90° CFRP layers. There were two types of tests for every specimen: the static and dynamic tests. A new experimental method using small steel balls was applied to create internal pressure in the TSTs. The results show that small steel balls could be used to increase the internal pressure compared to a normal liquid. Furthermore, the similarity rules for small-scale TSTs with small steel balls inside were also studied to consider the applicability of the models. The experimental results indicated that the CFRP layer could effectively restrain both static and dynamic hoop strains in the TSTs. Moreover, the CFRP layer could also remarkably reduce the impact of sloshing on the TST shells. The 0° CFRP layer proved to have better effects than the 0°/90° CFRP layers on the strengthening of the TSTs against dynamic loads.

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“…Tall slim tanks are exposed to bending buckling, causing elephantfoot bulges, when short thick tanks are exposed to shear bucking, related to diamond buckling near the tank base. Those failure modes are explained extensively by Maekawa [6].…”

mentioning

confidence: 99%

“…K and C are modal stiffness and damping of the vessel fundamental (1,1) beam-type mode, respectively.Masses tank m and 0 m are the masses of the tank shell and the convective portion of the liquid respectively. are the mass, linear stiffness and viscous damping coefficients of the asymmetric fundamental sloshing mode[6].…”

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confidence: 99%

Vibration mitigation in partially liquid-filled vessel using passive energy absorbers

Farid

Levy²,

Gendelman

2017

Journal of Sound and Vibration

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This paper treats possible solutions for vibration mitigation in reduced-order model of partially-filled liquid tank under impulsive forcing. Such excitation may lead to hydraulic impacts applied on the tank inner walls. Finite stiffness of the tank walls is taken into account. We explore both linear (Tuned Mass Damper) and nonlinear (Nonlinear Energy Sink) passive vibration absorbers; mitigation performances are examined numerically. The liquid sloshing mass is modeled by equivalent massspring-dashpot system, which can both perform small-amplitude linear oscillations and impact the vessel walls. We use parameters of the equivalent mass-spring-dashpot system for well-explored case of cylindrical tanks. The hydraulic impacts are modeled by high-power potential and dissipation functions. Critical location in the tank structure is determined and expression of the corresponding local mechanical stress is derived. We usefinite-elemet approach to assess the natural frequencies for specific system parameters and to figure out possibilities for internal resonances. Numerical evaluation criteria are suggested to determine the energy absorption performance.

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Recent Advances in Seismic Response Analysis of Cylindrical Liquid Storage Tanks

Cited by 10 publications

References 35 publications

Internal Resonances and Dynamic Responses in Equivalent Mechanical Model of Partially Liquid-Filled Vessel

Internal Resonances and Dynamic Responses in Equivalent Mechanical Model of Partially Liquid-Filled Vessel

Experimental Investigations of the Strengthening Effects of CFRP for Thin-Walled Storage Tanks under Dynamic Loads

Vibration mitigation in partially liquid-filled vessel using passive energy absorbers

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