Smart structures through nontraditional design of Tuned Mass Damper Inerter for higher control of base isolated systems

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

doi:10.1016/j.mechrescom.2020.103513

Cited by 42 publications

(39 citation statements)

References 16 publications

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“…50,51 Likewise, this SDOF model has been widely used for exploring the performance of the hybrid BISs, such as in the previous works. 10,11,16,17,19,[42][43][44]52 In the BIS+TTMDI, the tuned tandem mass dampers (TTMD) are attached to the isolation layer and connected by two inerters to the ground. A 4DOF system thus is analyzed for research purposes and the analysis will be extended later to more realistic base-isolated multi-story buildings.…”

Section: Equations Of Motionmentioning

confidence: 99%

“…[16][17][18]42,43 Likewise, a new TMDI has been recently proposed to reduce the isolation layer displacement in BISs. 44 It comprises a tuned mass damper inerter (TMDI) whose damping element is directly connected to the ground. Integration of BISs respectively with the inerter damper, TID, and tuned fluid inerter has also been studied by several researchers.…”

Section: Introductionmentioning

confidence: 99%

“…Integration of BISs with an optimal TMDI may attain further vibration reduction with respect to the original BISs, in terms not only of the base isolation layer displacement but also of response of the superstructure 16–18,42,43 . Likewise, a new TMDI has been recently proposed to reduce the isolation layer displacement in BISs 44 . It comprises a tuned mass damper inerter (TMDI) whose damping element is directly connected to the ground.…”

Section: Introductionmentioning

confidence: 99%

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A high performance hybrid passive base‐isolated system

Cao

2021

Structural Contr & Hlth

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This paper proposes a novel high performance hybrid passive base-isolated system integrating the base-isolated system (BIS) with the tuned tandem mass damper inerters (TTMDI), referred to as the BIS+TTMDI. To reveal the interaction between two components and their integrated control performance, the proposed configuration is modeled by a simplified four degree-of-freedom model together taking the dynamic characteristics of the isolation system, TTMDI, and superstructure into inclusion. Employing the optimization criterion defined as minimization of the dimensionless variance of superstructure displacement relative to the ground and by resorting to the particle swarm optimization, the system parameters of TTMDI are tuned to get their best integrated control performance. Evaluations are in turn unfolded on the performance taking into diverse TTMDI inertial properties and different isolation layer characteristics account and robustness, to fully explore the effectiveness of reducing both the displacement and acceleration for the isolation layer and superstructure, the TTMDI's energy dissipation mechanism and capacity, evolution of stiffness and damping, stroke, and structural frequency response. Subsequently, the findings of the BIS+TTMDI in the frequency domain is further tested via the time history analyses using the real records including both near-field with pulse and far-field earthquakes. In two analysis domains, the integrated performance of the proposed BIS+TTMDI is compared not only to the BIS but also to the BIS+TMDI, as well as to the BIS+TTMD and BIS +TMD. Results confirm that the BIS+TTMDI is a high performance system, namely, with high control effectiveness, high robustness, highly smaller stroke, and drastically reduced damping demand.

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Section: Equations Of Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A high performance hybrid passive base‐isolated system

Cao

2021

Structural Contr & Hlth

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“…The damper was replaced by an ISD topology based on traditional passive suspension and studied the influence of different ISD topology on the vibration reduction performance [20]. 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.…”

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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“…11,12 However, the effectiveness and application of these devices may be limited by the physical mass that can be added to the primary structure. 13 As a more effective alternative, the idea of employing the inerter to base isolation system has attracted extensive attention recent years. Different from the traditional one-terminal mass element, the inerter is a two-terminal inertia mass element in which the inertial force is proportional to the relative acceleration between its two terminals [14][15][16] ; i.e.,…”

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confidence: 99%

Closed‐form design formulae for seismically isolated structure with a damping enhanced inerter system

Pan

Jiang

Zhang

et al. 2021

Struct Control Health Monit

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Existing studies mainly focused on the mass enhancement effect of the inerter system within a seismically isolated structure. In this study, a new analytical perspective is introduced based on another attractive feature of the inerter system, namely, the damping enhancement effect. Accordingly, a ready-to-use optimal design method for isolated structure with the inerter system is proposed. First, the damping enhancement equation of the inerter system is reformulated in the form of the equivalent damping ratio. Then, the closedform design formulae of the inerter system are derived based on damping enhancement maximization and seismic demand. By taking the performance of both the primary structure and the isolation layer into consideration, the dual-target-oriented design strategy of the isolated structure is subsequently developed. And the closed-form design formulae of the inerter system are then integrated into the strategy to produce a practical design method for isolated structure with the inerter system. A seven-story isolated benchmark model is finally employed as the design case to exemplify the effectiveness of the proposed design method. Compared to the directly installed viscous damper, structural base shear force, inter-story drift angle, and the deformation of the isolation layer are more effectively reduced with the addition of the inerter system, and the energy dissipation capacity of the damper within the inerter system is improved substantially. Furthermore, the derived closed-form design formulae reduce the burden of iterative calculation and bring a high-efficient design for isolated structure with the inerter system.base isolation, closed-form design formulae, damping enhancement effect, dual-targetoriented design strategy, inerter system | INTRODUCTIONBase isolation technology has been extensively used in earthquake-prone regions to protect the structures from earthquake-induced damage. 1,2 The principle of this technology is to transfer most of the seismic energy to the isolation system, such that the primary structure is almost decoupled from the ground motion and behaves similar to a rigid body. However, in doing this, a relatively large displacement concentrates at the isolation layer, which may occupy a huge space for installation and cause inconvenience to the connection of utilities (gas and water supply system). 3 As a

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Smart structures through nontraditional design of Tuned Mass Damper Inerter for higher control of base isolated systems

Cited by 42 publications

References 16 publications

A high performance hybrid passive base‐isolated system

A high performance hybrid passive base‐isolated system

Dynamic Characteristics Analysis of ISD Suspension System under Different Working Conditions

Closed‐form design formulae for seismically isolated structure with a damping enhanced inerter system

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