Advantages and design of inerters for isolated storage tanks incorporating soil conditions

Zhao, Zhipeng; Hu, Xiuyan; Zhang, Ruifu; Xie, Ming; Liu, Songhe

doi:10.1016/j.tws.2023.111356

Cited by 14 publications

(2 citation statements)

References 60 publications

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“…With the invention of inerters [ 1 , 2 , 3 ], it is possible to systematically realize any passive mechanical system as the physical interconnection of dampers, springs, inerters, etc., which has motivated the recent investigations on the synthesis of passive networks under low-complexity constraints [ 4 , 5 , 6 , 7 , 8 , 9 ]. Passive mechanical networks containing dampers, springs, and inerters (or called damper–spring–inerter networks) have been widely applied as passive mechanical controllers to many vibration control systems, such as seat suspension systems [ 10 ], beam-type vibration systems [ 11 ], vehicle suspension systems [ 12 , 13 , 14 , 15 , 16 ], vibration absorbers [ 17 , 18 ], bridge vibration systems [ 19 ], wind turbine systems [ 20 ], storage tanks [ 21 , 22 ], building vibration systems [ 23 ], etc. The results have shown that the low-complexity mechanical networks containing inerters can always provide better system performances compared with the conventional damper–spring networks.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis and Design of n-DOF Vibration Systems Containing Both Semi-Active and Passive Mechanical Controllers

Wang,

2024

Sensors

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This paper is concerned with the stability analysis and design of the n-DOF (n-degree-of-freedom) mass-chain vibration systems containing both semi-active and passive mechanical controllers. Based on Lyapunov’s stability theory, sufficient conditions are derived for the n-DOF vibration system containing a semi-active switched inerter and a passive mechanical network with the first-order admittance to be globally asymptotically stable. Furthermore, the optimization designs of a quarter-car vibration control system and a three-storey building vibration system are conducted together with the derived stability results, and the instability cases contradicting the stability conditions are presented for illustration. The optimization and simulation results show that the combination of semi-active and passive mechanical controllers in vibration systems can clearly enhance system performances in comparison with the conventional semi-active or passive control. The novelty of this paper is that the stability problem of a general n-DOF vibration system that simultaneously contains a semi-active controller and a first-order passive controller is investigated for the first time, where such a system combines the advantages of both semi-active and passive mechanical controllers. The investigations and results can provide an essential foundation for further exploring the stability problems of more general systems, and can be applied to the controller designs of many vibration systems in practice.

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Section: Introductionmentioning

confidence: 99%

Stability Analysis and Design of n-DOF Vibration Systems Containing Both Semi-Active and Passive Mechanical Controllers

Wang,

2024

Sensors

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“…In seismic base isolation, the supplemental fluid inerter damper (FID) and electromagnetic inertial mass damper (EIMD) represent novel applications, with the FID incorporating fluid inerter technology and the EIMD integrating electromagnetic inertial mass principles to enhance seismic resilience. The performance of the base-isolated structures with FID has been investigated by various researchers and has shown that these are effective in seismic response control [27][28][29][30][31][32][33][34]. Lately, there has been a showcase of the dynamic characteristics of electromagnetic inertial mass dampers (EIMDs) and the identification of optimal parameters to effectively control the structural response of base-isolated structures [35,36].…”

Section: Introductionmentioning

confidence: 99%

The Role of a Simple Inerter in Seismic Base Isolation

Jangid

2024

Applied Sciences

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The present study investigates the role of a simple inerter in supplemental devices for possible implementation in the mature seismic base isolation technique. Firstly, the response of the base-isolated structure with an optimally tuned mass damper inerter (TMDI) is investigated to see the tuning effects. The time required to tune the TMDI was found to be significantly longer than the duration of a strong-motion earthquake. There was still a reduction in the response of the isolated structure, which is primarily due to the added damping and stiffness (ADAS) of TMDI and not because of the tuning effects. Hence, it is proposed that the corresponding ADAS of the TMDI be directly added to the isolation device. Secondly, the response of the base-isolated structures to the fluid inerter damper (FID) is studied. It was observed that the inerter of the FID does not influence the displacement variance of an isolated structure under broadband earthquake excitation. It implies that the response of the isolated structure to FID is primarily controlled by its counterpart fluid damper (FD). The performance of optimal TMDI, ADAS, FID, and FD to mitigate the seismic response of the flexible multi-story base-isolated structure under real earthquake excitations is also investigated. In terms of suppressing the displacement and acceleration responses of the isolated structure, it has been found that TMDI and ADAS perform similarly. Comparing the response of the isolated structure with FID and FD demonstrated that the inerter in the FID has detrimental effects on the isolated structures, in which the top floor’s acceleration and base shear are substantially increased.

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Feasibility and design of nonlinear negative‐stiffness isolating approach for solid‐rocket‐motor‐type structures

Wang,

Gao,

Wang

et al. 2024

Engineering Reports

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Solid rocket motor (SRM)‐type structures are popular due to their reliability, considering that service safety during transportation can be improved by applying advanced vibration control technologies. In this study, a negative‐stiffness‐enhanced isolation system (NSeIS) with appropriately designed linear and nonlinear properties was developed to vertically isolate SRMs subjected to transportation‐ and deployment‐induced vibrations. The NSeIS design, based on the combination of a negative‐stiffness device and vertical isolator, involved a clear mechanical model, physical realization, and mechanical properties. Parametric analyses were performed on a typical SRM controlled with a linear and nonlinear NSeIS and a conventional isolation system. Subsequently, a feasible parameter domain and design recommendations were deduced. Finally, design cases for the SRM for time‐domain verification were considered. The results revealed that the NSeIS offers a flexible and enhanced isolating effect through the parallel arrangement of the negative‐stiffness device and conventional isolators. For the motor‐type structure, NSeIS ensures marked enhancements in performance and multiple levels of mitigation effects. Thus, compared with a conventional isolator with the same damping, NSeIS achieves a more substantial negative‐stiffness effect for a large displacement response range owing to its nonlinear property. NSeIS can isolate more vibration‐induced energy, thereby suppressing the interface Mises stress, which is essential for SRM‐type structures.

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Advantages and design of inerters for isolated storage tanks incorporating soil conditions

Cited by 14 publications

References 60 publications

Stability Analysis and Design of n-DOF Vibration Systems Containing Both Semi-Active and Passive Mechanical Controllers

Stability Analysis and Design of n-DOF Vibration Systems Containing Both Semi-Active and Passive Mechanical Controllers

The Role of a Simple Inerter in Seismic Base Isolation

Feasibility and design of nonlinear negative‐stiffness isolating approach for solid‐rocket‐motor‐type structures

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