A bidirectional and homogeneous tuned mass damper: A new device for passive control of vibrations

Almazán, José L.; Llera, Juan Carlos de la; Inaudi, José A.; López-García, Diego; Izquierdo, Luis A.

doi:10.1016/j.engstruct.2006.09.005

Cited by 62 publications

(44 citation statements)

References 11 publications

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“…This effect is similar to that of an active TMD, although with less power consumption [9]. The BH-TMD, which allows vibration control in both the principal directions, was reported to reduce the displacement response to earthquakes by 60% [10]. Because TMDs were successful in controlling the dynamic response of buildings, the concept of a roof-garden TMD was proposed and investigated [11,12].…”

Section: Introductionmentioning

confidence: 71%

“…In addition to passive TMDs, other types of TMDs have been investigated, such as a hybrid mass damper (HMD) system driven by a fuzzy logic controller (FLC) [8], semi-active variable stiffness TMD (SAIVS-TMD) [9], and bidirectional and homogeneous TMD (BH-TMD) [10]. The SAIVS-TMD employed a single mass with a variable stiffness spring [9] to control the response of a wind-excited benchmark 76-story concrete building; the results indicated that the top-floor displacement and acceleration response reduced to 32% and 53%, respectively, relative to the corresponding response of an uncontrolled building.…”

Section: Introductionmentioning

confidence: 99%

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Vibration control of buildings by using partial floor loads as multiple tuned mass dampers

Sakr

2017

HBRC Journal

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Tuned mass dampers (TMDs) are considered as the most common control devices used for protecting high-rise buildings from vibrations. Because of their simplicity and efficiency, they have found wide practical applications in high-rise buildings around the world. This paper proposes an innovative technique for using partial floor loads as multiple TMDs at limited number of floors. This technique eliminates complications resulting from the addition of huge masses required for response control and maintains the mass of the original structure without any added loads. The effects of using partial loads of limited floors starting from the top as TMDs on the vibration response of buildings to wind and earthquakes are investigated. The effects of applying the proposed technique to buildings with different heights and characteristics are also investigated. A parametric study is carried out to illustrate how the behavior of a building is affected by the number of stories and the portion of the floor utilized as TMDs. Results indicate the effectiveness of the proposed control technique in enhancing the drift, acceleration, and force response of buildings to wind and earthquakes. The response of buildings to wind and earthquakes was observed to be more enhanced by increasing the story-mass ratios and the number of floor utilized as TMDs. ª 2015 The Author. Production and hosting by Elsevier B.V. on behalf of Housing and Building National Research Center. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Introductionmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Vibration control of buildings by using partial floor loads as multiple tuned mass dampers

Sakr

2017

HBRC Journal

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“…In the simulation, mass ratio, , is 2% of the weight of the structure. To tune the frequency of the first mode of the structure, TMD frequency, f s , is 1.01 Hz, which is also computed by Equation (9). Other parameters are the same as those used during simulating the SDOF system (Tables I and III).…”

Section: Numerical Model For Mdof Systemmentioning

confidence: 99%

“…The optimal tuning frequency, f s , and damping ratio, s , for the linear TMD are determined by Equations (8) and (9). Tables VI and VII …”

Section: Comparisons Via Performance Indicesmentioning

confidence: 99%

“…Design criteria were also proposed for friction TMD systems subjected to sinusoidal excitation. Almazan et al [9] developed a novel passive bidirectional and homogeneous TMD, which has a pendular mass supported by cables and linked to a unidirectional friction damper whose axis is perpendicular to the motion direction. Compared with traditional TMDs, the friction-type TMD has the following features: (1) energy dissipates via the friction mechanism and (2) a suspended mechanism is not necessary as the space demand is significantly smaller than that of the pendulum-type TMD.…”

Section: Introductionmentioning

confidence: 99%

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Protection of seismic structures using semi‐active friction TMD

Lin¹,

Lin²,

Wang³

2009

Earthq Engng Struct Dyn

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Although the design and applications of linear tuned mass damper (TMD) systems are well developed, nonlinear TMD systems are still in the developing stage. Energy dissipation via friction mechanisms is an effective means for mitigating the vibration of seismic structures. A friction-type TMD, i.e. a nonlinear TMD, has the advantages of energy dissipation via a friction mechanism without requiring additional damping devices. However, a passive-friction TMD (PF-TMD) has such disadvantages as a fixed and predetermined slip load and may lose its tuning and energy dissipation abilities when it is in the stick state. A novel semi-active-friction TMD (SAF-TMD) is used to overcome these disadvantages. The proposed SAF-TMD has the following features. (1) The frictional force of the SAF-TMD can be regulated in accordance with system responses. (2) The frictional force can be amplified via a braking mechanism. (3) A large TMD stroke can be utilized to enhance control performance. A non-sticking friction control law, which can keep the SAF-TMD activated throughout an earthquake with an arbitrary intensity, was applied. The performance of the PF-TMD and SAF-TMD systems in protecting seismic structures was investigated numerically. The results demonstrate that the SAF-TMD performs better than the PF-TMD and can prevent a residual stroke that may occur in a PF-TMD system. Copyright (C) 2009 John Wiley & Sons, Ltd

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Experimental verification of seismic vibration control using a semi‐active friction tuned mass damper

Lin

et al. 2011

Earthq Engng Struct Dyn

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A tuned mass damper (TMD) system consists of an added mass with properly functioning spring and damping elements for providing frequency-dependent damping in a primary structure. The advantage of a friction-type TMD, that is, a nonlinear TMD, is its energy dissipation via a frictionmechanism. In contrast, the disadvantages of a passive friction TMD (PF-TMD) are its fixed and predetermined slip load and loss of tuning and energy dissipation capabilities when it is in a stick state. A semi-active friction TMD (SAF-TMD) is used to overcome these disadvantages. The SAF-TMD can adjust its slip force in response to structure motion. To verify its feasibility, a prototype SAF-TMD was fabricated and tested dynamically using a shaking table test. A nonsticking friction control law was used to keep the SAF-TMD activated and in a slip state in earthquakes at varying intensities. The shaking table test results demonstrated that: (i) the experimental results are consistent with the theoretical results; (ii) the SAF-TMD is more effective than the PF-TMD given a similar peak TMD stroke; and (iii) the SAF-TMD can also prevent a residual TMD stroke in a PF-TMD system

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A bidirectional and homogeneous tuned mass damper: A new device for passive control of vibrations

Cited by 62 publications

References 11 publications

Vibration control of buildings by using partial floor loads as multiple tuned mass dampers

Vibration control of buildings by using partial floor loads as multiple tuned mass dampers

Protection of seismic structures using semi‐active friction TMD

Experimental verification of seismic vibration control using a semi‐active friction tuned mass damper

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