A Prediction Method for Response of an Elasto-Plastic Structure to Wide-Band Fluctuating Wind Force With Non-Zero Mean Component Based on Energy Balance

Yoshie, Keisuke; Kitamura, Haruyuki; Ohkuma, Takeshi; Wada, Akira

doi:10.3130/aijs.71.21_3

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…22,23 In addition, equipping buildings with dampers can improve habitability by reducing excessive vibration and dissipating kinetic energy from vibration. 2,3,6 Yoshie et al 31 proposed the evaluation method of the performance of the damped system. However, it was not applied to systems with VE dampers.…”

Section: Pdm For the Wind-induced Responses Of The Ve Systemmentioning

confidence: 99%

“…The PDM of the total input energy

E_{inp, PDM}

for a total of 700 s

true(t_{a} = 700

s) wind excitation by using the frequency spectral method is obtained by Equation (20), which was originally used for predicting the total input energy of the elastoplastic damper, proposed by Yoshie et al 31

E_{inp, PDM} goodbreak= t_{a} \int_{0}^{\infty} R_{e} ([], H_{V} ((), ω)) S_{F} ((), ω) italicdω .

where

R_{e} ([], H_{V} ((), ω))

is the real part of the transfer function in velocity is given by Equation (18b).…”

Section: Pdm For the Wind‐induced Responses Of The Ve Systemmentioning

confidence: 99%

“…Sato et al 11 evaluated the energy dissipation of VE damper subjected to wind force considering the effect of frequency dependency of different VE dampers but without proposing any PDM of the energy dissipation for the damper. Yoshie et al 31 proposed a frequency spectral method to predict the input energy of the elastoplastic damped building subjected to wind force. Although their prediction results showed high accuracy in the input energy of the elastoplastic damped system (i.e., nonfrequency‐dependent structure), the validity of the said PDM employing on VE‐damped system is unproven.…”

Section: Introductionmentioning

confidence: 99%

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Prediction on wind‐induced responses for tall buildings considering frequency dependency of viscoelastic damped structures

Sato,

Chang

2024

Structural Design Tall Build

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SummaryTime history analysis is sometimes used in an estimation of the wind‐induced response of a tall building. However, time history analysis for the wind‐induced behavior by the ensemble‐averaging wind force costs much computation time. This paper provides a reliable prediction method for the wind‐induced response of the viscoelastic (VE)‐damped system considering its frequency dependency coupling with frame damping effect with frequency spectral method. VE damper used in high‐rise buildings can dissipate energy from excessive vibration induced by seismic or wind excitation. Fractional derivative (FD) model of VE dampers can express VE frequency dependency clearly, but it is computationally complicated. The herein proposed prediction method is based on frequency spectral method and evaluated wind‐induced responses of the single degree of freedom (SDOF) VE‐damped system with a FD VE damper subjected to the respective 1st modal along‐ and across‐wind force. The maximum error of wind‐induced responses of the VE‐damped system, such as the root mean square value of responses, the total input energy, and the total energy dissipation, is within . In summary, the proposed method had high accuracy in the prediction of wind‐induced responses of the VE‐damped system considering its frequency dependency with the coupling effect of frame damping.

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Section: Pdm For the Wind-induced Responses Of The Ve Systemmentioning

confidence: 99%

“…The PDM of the total input energy

E_{inp, PDM}

for a total of 700 s

true(t_{a} = 700

E_{inp, PDM} goodbreak= t_{a} \int_{0}^{\infty} R_{e} ([], H_{V} ((), ω)) S_{F} ((), ω) italicdω .

where

R_{e} ([], H_{V} ((), ω))

is the real part of the transfer function in velocity is given by Equation (18b).…”

Section: Pdm For the Wind‐induced Responses Of The Ve Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prediction on wind‐induced responses for tall buildings considering frequency dependency of viscoelastic damped structures

Sato,

Chang

2024

Structural Design Tall Build

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“…An energy balance method has been established by balancing the seismic energy input and isolation layer energy dissipation, suggesting that the seismic responses of the base isolation layer can be estimated as long as the isolation layer energy dissipation is obtained [17]. Similarly, the wind-induced responses of the base isolation layer can also be estimated if the isolation layer energy dissipation is obtained [18][19][20][21][22][23]. On the other hand, the isolation layer energy dissipation will be very close to the steel damper energy dissipation when the duration of the wind forces is long enough [23].…”

Section: Introductionmentioning

confidence: 99%

Equivalent SDOF Models for Estimating Isolation-Layer Energy Dissipation in Base-Isolated Tall Buildings under Strong Winds

Qian,

Sato,

Osabel

2024

Buildings

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An isolation layer composed of isolators and steel dampers in base-isolated tall buildings can dissipate wind-induced energy via repeated elasto-plastic deformation. Its energy dissipation can be used to estimate its wind-induced responses and the fatigue damage in the steel dampers. Computationally costly time history analyses using multi-degree-of-freedom (MDOF) models suggest that some structural parameters influence the isolation-layer energy dissipation. However, using common single-degree-of-freedom (CS) models cannot fully capture such influences (e.g., those caused by the damping ratio and the natural period of the upper structure). Hence, this paper proposes a more accurate new equivalent single-degree-of-freedom (ES) model to estimate the isolation-layer energy dissipation in base-isolated tall buildings under strong winds. The ES model considers the influence of structural parameters and uses the first mode shapes of the MDOF models. It is as computationally efficient as, but is more accurate than, the CS model. The results indicate that it can estimate the isolation-layer energy dissipation as closely as MDOF models of base-isolated tall-building under strong winds.

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Alongwind and crosswind response of friction-pendulum base-isolated high-rise buildings

Chen

Huang

et al. 2023

Engineering Structures

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A Prediction Method for Response of an Elasto-Plastic Structure to Wide-Band Fluctuating Wind Force With Non-Zero Mean Component Based on Energy Balance

Cited by 8 publications

References 1 publication

Prediction on wind‐induced responses for tall buildings considering frequency dependency of viscoelastic damped structures

Prediction on wind‐induced responses for tall buildings considering frequency dependency of viscoelastic damped structures

Equivalent SDOF Models for Estimating Isolation-Layer Energy Dissipation in Base-Isolated Tall Buildings under Strong Winds

Alongwind and crosswind response of friction-pendulum base-isolated high-rise buildings

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