Inerter-based tuned liquid column damper for seismic vibration control of a single-degree-of-freedom structure

Wang, Qinhua; Tiwari, Nayan Deep; Qiao, Haoshuai; Wang, Quan

doi:10.1016/j.ijmecsci.2020.105840

Cited by 60 publications

(22 citation statements)

References 40 publications

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“…Different passive control devices may be installed at the storey having the same intermediate height as that of the corridor to mitigate the dynamic responses when these responses do not satisfy the requirement of design standards. ese different types of passive control devices can be categorized into displacement-dependent such as metal friction dampers [32,33] or buckling-restrained braces [34], velocitydependent such as fluid viscous dampers [35][36][37][38][39], or acceleration-dependent primarily related to inerter devices [40][41][42].…”

Section: Mathematical Model Of the Adjacent Buildings Under Wind And Seismic Excitationsmentioning

confidence: 99%

Comparison of Dynamic Responses of Parallel‐Placed Adjacent High‐Rise Buildings under Wind and Earthquake Excitations

Wang

Tiwari

et al. 2021

Shock and Vibration

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Two parallel-placed adjacent high-rise buildings are often linked to each other through passive control devices for vibration mitigation purposes. The mitigation efficiency of these control devices mainly depends on the characteristics of relative dynamic responses, namely, opposite-sign and same-sign responses of the two buildings. The present research first identifies an opposite-sign response factor to estimate the time ratio of opposite-sign responses. Subsequently, a structure comprising two adjacent high-rise buildings (with different natural frequency ratios) subjected to both wind and earthquake excitations is analyzed. Wind-induced responses are evaluated based on wind loads obtained from wind tunnel tests, while earthquake responses are determined through a suite of 44 natural ground-motion records. The results indicate that opposite-sign factors of the displacement, velocity, and acceleration responses under wind loads, especially at across-wind direction, are larger than those under earthquake excitations, and opposite-sign response factors under wind loads are insensitive to variation of the natural frequency ratio of the two adjacent buildings compared with those under earthquake excitations. The conclusions of this research may be helpful for wind-resistant and antiseismic design of parallel-placed adjacent high-rise buildings.

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Section: Mathematical Model Of the Adjacent Buildings Under Wind And Seismic Excitationsmentioning

confidence: 99%

Comparison of Dynamic Responses of Parallel‐Placed Adjacent High‐Rise Buildings under Wind and Earthquake Excitations

Wang

Tiwari

et al. 2021

Shock and Vibration

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“…It dissipates structural vibration energies through head loss of the fluid while it passes through the orifice [ 22 ]. TLCDs have many advantages over earlier TLDs [ 33 ] like (i) the damping ability of TLCDs is flexible and can be controlled by adjusting orifice opening, (ii) the frequency of TLCD can be tuned easily by adjusting the length of the liquid column, (iii) the geometry of TLCD can be varied as per design requirements of the structure. These advantages make TLCDs more compatible and applicable to real structures [ 33 – 35 ].…”

Section: Introductionmentioning

confidence: 99%

An experimental study of tuned liquid column damper controlled multi-degree of freedom structure subject to harmonic and seismic excitations

Shah

Usman

2022

PLoS ONE

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A tuned liquid column damper (TLCD) is a passive vibration control device that not only mitigates unwanted structural vibrations but also acts as a water storage facility in a building. These aspects of TLCD make its application specifically suited for building structures. Previously, many experimental works on TLCDs have been conducted considering a single degree of freedom (SDOF) structure. However, the performance of TLCDs to control the response of multi-degree of freedom (MDOF) structure has rarely been studied experimentally. Therefore, this study has investigated the performance of a tuned liquid column damper (TLCD) on a multi-degree of freedom (MDOF) structure using shake table testing. A four-storey steel frame structure equipped with TLCD at the top of the fourth storey has been studied. Experimental normalized frequency response curves for MDOF structure equipped with TLCD have been determined. For this purpose, a series of harmonic loadings including frequencies 0.65 Hz, 1.17 Hz, 1.30 Hz, 1.43 Hz and 1.95 Hz have been applied in addition to historic earthquake loading. Peak and root-mean-square (RMS) accelerations have been discussed in detail for all the applied loadings at each storey level of the structure. For comparison purposes, the percentage reductions in peak and RMS accelerations have been calculated and compared. Also, RMS displacements and inter-storey drifts have been presented for resonant and seismic excitations. Both in time and frequency domains, responses of controlled MDOF structure have been analyzed and compared with uncontrolled structure. Results confirmed that TLCD has improved the MDOF structure responses at harmonic loadings frequencies near resonance and historic earthquake excitations. Furthermore, the improvement in the responses of MDOF structure with TLCD is more prominent at harmonic loadings compared to historic earthquake loading.

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“…The literature [21][22][23][24][25][26] studied the effect of the ISD module composed of inerter, spring, and damper on the vibration reduction performance of the system. The literature [27][28][29] studied the influence of the control system on the damping performance of the damping system with inertial damping elements. Ma [30] developed an inerterbased vibration isolation system for heave motion mitigation of semi-submersible platforms subjected to sea waves.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis of ISD Suspension System under Different Working Conditions

Shang

2021

Mathematics

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The “inerter-spring-damper” (ISD) suspension system is a suspension system composed of an inerter, spring, and damper. To study the ride comfort and stability of the vehicle by using the ISD suspension system, a vehicle model with ISD suspension is established in this paper. The vehicle model including vertical, pitch, roll, and yaw motion of the vehicle body. Based on the vehicle model, the differential equation of motion with ISD suspension is obtained. The dynamic responses of the ISD suspension system are investigated by using different road excitations. At the same time, the influence of coupled excitation and single excitation on the vibration reduction performance of the ISD suspension system is studied. Then, the dynamic responses of ISD suspension and passive suspension are compared, and the improvement of comprehensive vibration reduction performance of ISD suspension system is quantitatively analyzed. The numerical results illustrate the ISD suspension has the optimal vehicle speed under different road excitations, and the comprehensive vibration reduction performance of the ISD suspension is the best when driving at the optimal vehicle speed. Under different types of road excitation, ISD suspension shows excellent comprehensive vibration reduction performance. ISD suspension is more suitable for vibration reduction of complex roads than that of a single road.

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Inerter-based tuned liquid column damper for seismic vibration control of a single-degree-of-freedom structure

Cited by 60 publications

References 40 publications

Comparison of Dynamic Responses of Parallel‐Placed Adjacent High‐Rise Buildings under Wind and Earthquake Excitations

Comparison of Dynamic Responses of Parallel‐Placed Adjacent High‐Rise Buildings under Wind and Earthquake Excitations

An experimental study of tuned liquid column damper controlled multi-degree of freedom structure subject to harmonic and seismic excitations

Dynamic Characteristics Analysis of ISD Suspension System under Different Working Conditions

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