On the use of tuned mass dampers to suppress vortex shedding induced vibrations

Strømmen, Einar N.; Hjorth-Hansen, Erik

doi:10.12989/was.2001.4.1.019

Cited by 11 publications

(10 citation statements)

References 1 publication

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“…In any case, the computer model developed in this study would be capable of simulating the presence of such localized devices, for example, by suitable modification of the parameters describing the nonlinear vortex‐shedding model. Nonlinear effects of stay cables as remedial devices due to an increment of aerodynamic damping associated with the presence of local vibrations. The efficiency of tuned mass dampers on suppressing vortex‐shedding vibrations; this is still a controversial issue. Although some researchers indicate that they work better when a nonlinear force model is used (e.g., Strømmen and Hjorth‐Hansen, 2001; Livesey and Larose, 1995), some situations may arise, in which they seem to be ineffective (Owen et al, 1996). …”

Section: Discussionmentioning

confidence: 99%

“…The efficiency of tuned mass dampers on suppressing vortex‐shedding vibrations; this is still a controversial issue. Although some researchers indicate that they work better when a nonlinear force model is used (e.g., Strømmen and Hjorth‐Hansen, 2001; Livesey and Larose, 1995), some situations may arise, in which they seem to be ineffective (Owen et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

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Nonlinear Computer Model for the Simulation of Lock‐in Vibration on Long‐Span Bridges

Caracoglia

Noè

Sepe

2008

Computer aided Civil Eng

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The susceptibility of modern bridges to vortex-shedding-induced vibration is a major concern for researchers and designers. The relevance of this phenomenon is associated with the onset of large-amplitude aeroelastic vibration at moderate wind-velocity regimes due to synchronization, that is, lock-in, of the vortexshedding frequencies with those corresponding to the natural modes of the structure. Recent observations, either recorded during the monitoring of full-scale bridges or during experimental tests of deck models in wind tunnels, confirm the importance of these aspects during the operational life of the structure. In this article, a computer model for the simulation of the aeroelastic loading associated with vortex shedding in lock-in regime is presented, for a direct application to dynamic analysis of long-span bridges. This approach is based on earlier work focused on the response of slender vertical cylindrical chimneys to vortex-shedding excitation, which is here extended to noncircular cross sections. The numerical model was employed in conjunction with a finite- *

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Nonlinear Computer Model for the Simulation of Lock‐in Vibration on Long‐Span Bridges

Caracoglia

Noè

Sepe

2008

Computer aided Civil Eng

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“… F i in Equation is the generalized lift force resulting from the vortex‐shedding effect (forcing term in the VIV force that is independent with structural motion), the power spectral density (PSD) of which can be expressed as

S_{F_{i}} ((), ω) = \frac{2 q_{V}^{2} D^{3} σ_{CL}^{2} λ}{\sqrt{π} ω_{s} B} \exp ([], - {(\frac{1 - ω / ω_{s}}{B})}^{2}) \int_{0}^{L} φ_{i}^{2} ((), x) italicdx,

where q V = ρU 2 /2 is wind pressure with U denoting wind velocity, σ CL is the RMS of the fluctuating lift coefficient due to vortex shedding, ω s = 2 πUS t / D is vortex‐shedding frequency, S t is Strouhal number, B is load spectrum bandwidth, and λ is a dimensionless parameter that represents the coherency length‐scale of vortices.…”

Section: Bridge Viv Control With Ibdsmentioning

confidence: 99%

“…To evaluate the control performances of different IBDs, a bridge investigated by Strommen and Hansen is adopted as a case study. This bridge is a suspension bridge with a main span of L = 595 m. The superstructure is a streamlined box deck with a height of 2.5 m and width of 13.6 m. This bridge experienced VIV in its fourth vertical mode with a maximum VIV amplitude of 0.25 m. The modal damping and frequency are ξ ni = 0.24% and ω ni = 2.462 rad ⋅ s −1 , respectively.…”

Section: Case Study and Evaluationmentioning

confidence: 99%

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Performance evaluation of inerter‐based dampers for vortex‐induced vibration control of long‐span bridges: A comparative study

et al. 2020

Struct Control Health Monit

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Summary Inerter‐based dampers (IBDs) have been proposed to enhance the efficiency of conventional tuned mass dampers (TMDs) in controlling wind‐induced vibration of civil structures recently. In this paper, four different IBDs, with each featuring a specific combination of dashpot–spring elements in series or in parallel with the inerter device, are applied to control the vortex‐induced vibration (VIV) of long‐span bridges. The governing equations of the bridge–IBD system under the effect of VIV are established, and the strategy to optimize the IBD parameters is proposed. The performances of different IBDs in terms of mitigating the VIV response of the deck, the stroke of mass block, the static deformation of spring due to gravity, the reaction force of IBDs on the bridge deck, and the robustness of the system (the control efficiency against the deviation of design parameters from their optimal values) are systematically evaluated and compared. Through this comparative study, the superiorities of IBDs to conventional TMDs in bridge VIV control are illustrated, and two feasible layouts of IBDs that are suitable for bridge VIV control are suggested. On the basis of these results, the guideline for VIV‐resistance design of long‐span bridges with the help of IBDs is also proposed.

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Vibration control of vortex-induced vibrations of a bridge deck by a single-side pounding tuned mass damper

Wang

Hua

et al. 2018

Engineering Structures

103

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On the use of tuned mass dampers to suppress vortex shedding induced vibrations

Cited by 11 publications

References 1 publication

Nonlinear Computer Model for the Simulation of Lock‐in Vibration on Long‐Span Bridges

Nonlinear Computer Model for the Simulation of Lock‐in Vibration on Long‐Span Bridges

Performance evaluation of inerter‐based dampers for vortex‐induced vibration control of long‐span bridges: A comparative study

Vibration control of vortex-induced vibrations of a bridge deck by a single-side pounding tuned mass damper

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