Optimal design of tuned liquid column damper inerter for vibration control

Matteo, Alberto Di; Masnata, Chiara; Adam, Christoph; Pirrotta, Antonina

doi:10.1016/j.ymssp.2021.108553

Cited by 39 publications

(15 citation statements)

References 41 publications

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“…As it can be seen in Equations () and (), the function

\sigma _{{X}_b}^2

depends on the mass ratios

{\mu }_l

and

{\mu }_t

. Since generally

{\mu }_l &lt; 5\%

and

{\mu }_t &lt; 1\%

, solutions of Equation () can be approximated by assuming that the third and higher powers of

{\mu }_l

{\mu }_t

and their products can be neglected (Di Matteo et al., 2022).…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Specifically, the evaluation of the optimal value of

{\zeta }_l

is obtained according to the analysis developed by Di Matteo et al. (2022) considering the BI structure with a classical TLCD subjected to a white noise excitation. In this case, the BI system displacement and the fluid velocity variances can be expressed as (Di Matteo et al., 2018):

\begin{equation}\tilde{\sigma }_{{X}_b}^2 = {\tilde{\phi }}_{{X}_b}\frac{{\pi {G}_0}}{{4\,\omega _b^3}};{\rm{ }}\tilde{\sigma }_{\dot{U}}^2 = {\tilde{\phi }}_{_{\dot{U}}}\frac{{\pi {G}_0}}{{4\,{\omega }_l}};\end{equation}

where

{\tilde{\phi }}_{{X}_b} = {\tilde{N}}_{{X}_b}/{\tilde{D}}_{{X}_b}

and

{\tilde{\phi }}_{\dot{U}} = {\tilde{N}}_{\dot{U}}/{\tilde{D}}_{\dot{U}}

with the numerators and denominators given by

\begin{matrix} {\overset{N}{true}}_{X_{b}} = ζ_{l} {((), 1 + μ_{l} - α^{2} μ_{l})}^{2} + ν_{l} ζ_{b} [α^{4} μ_{l}^{2} + 4 ζ_{l}^{2} ((), 1 + μ_{l})] \end{matrix}

…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Therefore, these multi-objective optimization procedures may be computationally demanding in a design phase (H. S. Kim & Roschke, 2006), even leading in some cases to unrealistic parameters not applicable in real design processes (Wang et al, 2020a). To face this issue, an optimal design of the TLCDI through direct closed form solutions and ready-to-use design charts has been recently proposed in Di Matteo et al (2022).…”

Section: Introductionmentioning

confidence: 99%

“…To face this issue, an optimal design of the TLCDI through direct closed form solutions and ready‐to‐use design charts has been recently proposed in Di Matteo et al. (2022).…”

Section: Introductionmentioning

confidence: 99%

“…Conversely, this study proposes an alternative quicker method for an approximate estimation of 𝜁 𝑙 . Specifically, the evaluation of the optimal value of 𝜁 𝑙 is obtained according to the analysis developed by Di Matteo et al (2022) considering the BI structure with a classical TLCD subjected to a white noise excitation. In this case, the BI system displacement and the fluid velocity variances can be expressed as (Di Matteo et al, 2018):…”

mentioning

confidence: 99%

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Efficient estimation of tuned liquid column damper inerter (TLCDI) parameters for seismic control of base‐isolated structures

Masnata

Matteo

Adam

et al. 2022

Computer aided Civil Eng

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This paper presents an enhanced base-isolation (BI) system equipped with a novel passive control device composed of a tuned liquid damper and an inerter (TLCDI). With the aim of reducing the seismic response of BI systems, this contribution focuses on the design of the TLCDI providing analytical solutions for the optimal TLCDI parameters, easily implementable in the design phase. The effectiveness of the proposed approach in terms of seismic response reduction and computational gain is validated by comparison with classical numerical optimization techniques. The control performance of two different base-isolated TLCDI-controlled structures is assessed by employing real-ground motion records, and relevant comparisons with both uncontrolled base-isolated structures and equipped with a conventional TLCD are presented.

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“…As it can be seen in Equations () and (), the function

\sigma _{{X}_b}^2

depends on the mass ratios

{\mu }_l

and

{\mu }_t

. Since generally

{\mu }_l &lt; 5\%

and

{\mu }_t &lt; 1\%

, solutions of Equation () can be approximated by assuming that the third and higher powers of

{\mu }_l

{\mu }_t

and their products can be neglected (Di Matteo et al., 2022).…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Specifically, the evaluation of the optimal value of

{\zeta }_l

\begin{equation}\tilde{\sigma }_{{X}_b}^2 = {\tilde{\phi }}_{{X}_b}\frac{{\pi {G}_0}}{{4\,\omega _b^3}};{\rm{ }}\tilde{\sigma }_{\dot{U}}^2 = {\tilde{\phi }}_{_{\dot{U}}}\frac{{\pi {G}_0}}{{4\,{\omega }_l}};\end{equation}

where

{\tilde{\phi }}_{{X}_b} = {\tilde{N}}_{{X}_b}/{\tilde{D}}_{{X}_b}

and

{\tilde{\phi }}_{\dot{U}} = {\tilde{N}}_{\dot{U}}/{\tilde{D}}_{\dot{U}}

with the numerators and denominators given by

\begin{matrix} {\overset{N}{true}}_{X_{b}} = ζ_{l} {((), 1 + μ_{l} - α^{2} μ_{l})}^{2} + ν_{l} ζ_{b} [α^{4} μ_{l}^{2} + 4 ζ_{l}^{2} ((), 1 + μ_{l})] \end{matrix}

…”

Section: Optimization Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…To face this issue, an optimal design of the TLCDI through direct closed form solutions and ready‐to‐use design charts has been recently proposed in Di Matteo et al. (2022).…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Efficient estimation of tuned liquid column damper inerter (TLCDI) parameters for seismic control of base‐isolated structures

Masnata

Matteo

Adam

et al. 2022

Computer aided Civil Eng

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Behavior of reinforced concrete walls with integrated tubing system

Chen

Zhang²,

et al. 2023

Structural Concrete

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A novel tuned liquid wall damper (TLWD) system was developed by incorporating liquid‐filled tubes within concrete walls to improve structural performance versus motion. However, the placement of the hollow tubes within a concrete wall introduces voids, and their effect on the general structural performance of the multifunctional concrete structure is not well understood. The objective of this paper is to further the understanding of reinforced concrete walls equipped with such tubing systems. To this end, experimental testing was performed on three pairs of reinforced concrete walls with circular openings. One pair was tested for four‐point bending, one for axial compression, and the other for pushover. Cracking, failure load, and failure mode were monitored during testing. Finite element (FE) models were developed and correlated with testing results, and results numerically compared against conventional, solid concrete walls also through FE modeling. Results showed that concrete walls with circular opening performed similarly to solid walls for strength, whereas the reduction in strength caused by the tubes did not have significant adverse effects. The strength reduction of the RC wall panel with integrated tubing system is dependent on the configuration of integrated tubing system and the loading condition such as bending moment, axial compression, and in‐plane shear. Finally, the strengths of the walls with openings were calculated following ACI Code, which were compared with those from the test. Overall, results showed that a tuned liquid column damping system can be integrated within a concrete wall to create a TLWD, with the wall preserving its structural function.

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Mass ratio factor in control performance of optimum tuned liquid dampers

Ocak,

Bekdaş,

Nigdeli

2023

Structural Design Tall Build

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SummaryTuned liquid dampers provide structure control with the help of the liquid mass in tanks that are attached to the structure. The mass ratio affects the optimum tuned liquid damper (TLD) parameters. This study examines the effect of mass ratio on the control performance of TLD devices in providing seismic control of structures with different damping ratios. For this purpose, TLD devices with different mass ratios were placed on two different single‐story steel and reinforced concrete structure models, and their performance under earthquake excitation was investigated. TLD parameters for obtaining the optimum displacement level in the 0.5‐ and 1.0‐s structure natural period for both structure types were optimized with the Jaya algorithm (JA), which is a metaheuristic algorithm. By using the optimum TLD parameters, the structural displacement and total acceleration values were obtained by the critical earthquake analysis. When the results are examined, it is understood that TLD mass increase from a 20% mass ratio for both structure types and selected structure periods does not have a significant effect on TLD control performance.

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Optimal design of tuned liquid column damper inerter for vibration control

Cited by 39 publications

References 41 publications

Efficient estimation of tuned liquid column damper inerter (TLCDI) parameters for seismic control of base‐isolated structures

Efficient estimation of tuned liquid column damper inerter (TLCDI) parameters for seismic control of base‐isolated structures

Behavior of reinforced concrete walls with integrated tubing system

Mass ratio factor in control performance of optimum tuned liquid dampers

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