Clutching inerters enhanced tuned mass dampers for structural response mitigation under impulsive and seismic excitations

Wang, Jingjing; Zhang, Chao; Liu, Zhibin

doi:10.1002/stc.2881

Cited by 12 publications

(6 citation statements)

References 46 publications

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“…He et al 23 investigated the effective damping ratio of TMD based on acceleration. Fallahpasand et al 24 proposed a pendulum TMD with nonlinear viscous damping, while Wang et al 25 presented TMDs enhanced by clutching inerters. From the above‐reviewed references, it can be found that a well‐optimized passive TMD has a good control effect; however, it is sensitive to the frequency ratio and a mistuned TMD can even have a negative effect 26,27 .…”

Section: Introductionmentioning

confidence: 99%

Seismic control of a smart structure with semiactive tuned mass damper and adaptive stiffness property

Wang

Zhou

Shi

2023

Earthquake Engineering and Resilience

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To reduce structural responses under earthquake excitations effectively and improve their resilience, a smart structure with a semiactive tuned mass damper (STMD) on the top story and a semiactive adjustable stiffness device (SASD) on the first story which contributes to the structural adaptive stiffness property is developed in this study. The SASD consists of a diamond spring device composed of four linear springs and an electromagnetic actuator, which can change the angle of the diamond device and therefore retune the stiffness. Two typical STMDs developed previously are reviewed first, which are diamond device‐based STMD with variable stiffness and damping and pendulum‐type STMD with variable frequency and eddy current damping, respectively. Numerical results show that the proposed STMD has a better control performance than passive‐tuned mass damper and STMD with variable stiffness or damping acting independently. To enhance the seismic protection of the structure with an STMD on the top story further, based on the principle of base isolation, a diamond device‐based SASD is applied to the first story. The linear quadratic Gaussian‐based variable stiffness algorithm for SASD is proposed. A 10‐story building is presented as a case study. The variable stiffness range of SASD is discussed in detail, while it is found that a ±50% variable stiffness range achieves the best earthquake mitigation. Control effects of different numbers of SASD implemented along the height of the building are compared as well. Numerical results show that with the increase in the number of SASDs, the earthquake mitigation effect is better; however, the magnitude of the increase is decreasing. The smart structure with the combined SASD and STMD has an excellent seismic protection performance and is better than with SASD or STMD acting independently. Meanwhile, it is found that the proposed combination has a similar control effect to four SASDs installed from the first story to the fourth story, respectively, while it can reduce the number of additional electromechanical systems and the influence on the use function of the building.

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Section: Introductionmentioning

confidence: 99%

Seismic control of a smart structure with semiactive tuned mass damper and adaptive stiffness property

Wang

Zhou

Shi

2023

Earthquake Engineering and Resilience

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“…5 Wang and Sun further analyzed the performance of the ideal model of the clutching inerter in comparison with the inerter and concluded that the clutching inerter improves the control performance of resonant displacement and peak displacement under sinusoidal and seismic excitations. 10 In addition, the performance of the clutching inerter has also been studied in TMD system, 14,15 base-isolated system 16 and rocking system. 17 However, the clutching inerter was analyzed using the ideal model in most studies and there is still no perfect experimental verification on the performance of a real clutching inerter, although Malaga-Chuquitaype et al 18 conducted relevant tests on a pair of 3D printed clutched inerter, only tests under several low-frequency loads were performed due to the limitation of loading.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental analyses of structures with supplemental clutching inertia devices

Liang

2022

Earthq Engng Struct Dyn

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Clutching inertia device (CID) is a novel device that incorporates the function of an inerter and the clutching effect that can be provided by a ratchet. In this paper, the performance of an SDOF system with supplemental clutching inertia is investigated through theoretical analyses and experimental tests. First, the dynamic equation for a structure with a CID is built in the form of multi‐body motion. Second, an inertia device (ID), a CID, and an inertia‐enhanced CID (ECID) by reducers are designed for dynamic testing in a small‐scale steel structure. Third, the influence of clutching effect, flywheel inertia and accessory damping of the CID on the structural response is analyzed through a comparative study of numerical simulation and shaking table tests under harmonic and seismic excitation. The results confirm previous predictions that the clutching effect helps to reduce the resonant response of the structure and that the increase in flywheel inertia can further mitigate the resonant response when considering certain accessory damping in the CID. The increase in accessory damping, either viscous damping or friction damping, will obviously reduce the resonant response and resonant frequency of the controlled structure, and the structure with the ECID shows better performance than that of CID when considering the same accessory damping. It is confirmed that the tested CIDs improved the structural seismic performance by slightly prolonging the fundamental structural period and prominently controlling the response in resonant frequency and high frequency owing to the effect of supplemental clutching inertia and accessory damping.

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“…To take advantage of both the mass amplification effect and energy absorption capacity of inerters, the authors have proposed TMD-clutching inerters (TMDCIs). 52 The TMDCI is developed by replacing the conventional inerter in the TMDI with a pair of opposite clutching inerters (Figure 3). The resulting device can be regarded as the combination of a TMDI and CID.…”

Section: Introductionmentioning

confidence: 99%

“…Through a campaign of numerical simulations, the existing study showed that the TMDCI boasted strong robustness against frequency-related uncertainties and did not require large supplemental damping. 52 However, the superior performance of the TMDCI has not been fully explored as only one way of inerter arrangement was considered in the previous work. Furthermore, validation of the theoretical model and analytical explanation of the effectiveness of TMDCIs are yet to be reported.…”

Section: Introductionmentioning

confidence: 99%

“…The differences between these realistic clutching inerters and ideal ones are further explained in Figure 4. Through a campaign of numerical simulations, the existing study showed that the TMDCI boasted strong robustness against frequency‐related uncertainties and did not require large supplemental damping 52 . However, the superior performance of the TMDCI has not been fully explored as only one way of inerter arrangement was considered in the previous work.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental validation, analytical investigation, and design method of tuned mass damper‐clutching inerter for robust control of structures

Wang

Zheng

2022

Earthq Engng Struct Dyn

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Inerters have significantly uplifted the cost‐effectiveness of structural control technologies. A recently proposed tuned mass damper‐clutching inerter (TMDCI) takes advantage of both mass amplification effect and energy absorption capacity of inerter which is more effective and practical than its predecessors. However, the existing study only provided numerical demonstrations while experimental evidence and analytical explanation are still lacking for in‐depth understanding of the dynamic properties and working principles of TMDCIs. In this study, the mathematical descriptions of TMDCIs are first developed and experimentally validated on a three‐story structure. The validated model is then used to analyze the influences of inerter arrangement and total inertance in inerter‐enhanced devices. With an appropriate inerter arrangement and inertance, the TMDCI shows excellent control performance regardless of the changes in the structural frequency. The reason for the strong robustness of TMDCIs is then revealed via analytical investigation of standalone TMDCIs; the harmonically forced steady‐state responses manifest that the TMDCI can be linearized as equivalent tuned mass damper‐inerters with variable parameters whose natural frequency increases with the increase of excitation frequency. Based on the analytical findings, a design method with robustness consideration is subsequently proposed and draws satisfactory TMDCI designs for both single‐degree‐of‐freedom and multi‐degree‐of‐freedom structures. The designed TMDCI outperforms the comparable devices for both impulsive and seismic response mitigation. The study provides analytical insight into the control capacity of TMDCIs and lays the groundwork for practical design of TMDCIs as an effective and robust control strategy for engineering structures.

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Clutching inerters enhanced tuned mass dampers for structural response mitigation under impulsive and seismic excitations

Cited by 12 publications

References 46 publications

Seismic control of a smart structure with semiactive tuned mass damper and adaptive stiffness property

Seismic control of a smart structure with semiactive tuned mass damper and adaptive stiffness property

Theoretical and experimental analyses of structures with supplemental clutching inertia devices

Experimental validation, analytical investigation, and design method of tuned mass damper‐clutching inerter for robust control of structures

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