Reduction of wind induced motion utilizing a tuned sloshing damper

Kareem, A.

doi:10.1016/0167-6105(90)90415-9

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tuned sloshing damper (TSD) is a well-established vibration control device that has been used to study mitigation of structural responses due to various environmental excitations from wind, waves, and earthquake (Lee and Reddy, 1982; Kareem, 1990; Modi and Seto, 1997; Banerji et al., 2000; Jin et al., 2007; Nanda and Biswal, 2011; Murudi and Banerji, 2012; Roy et al., 2017). There have been a number of practical implementations of TSDs, chiefly for wind-excited tall buildings, airport towers, commercial towers, skyscrapers, and bridges (Tamura et al., 1995; Soong and Dargush, 1997; Malekghasemi et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

Roy

Zhang

Ghosh

et al. 2019

Journal of Vibration and Control

View full text Add to dashboard Cite

This paper explores the potential of a tuned sloshing damper (TSD) in the control of small amplitude vibrations, which is often important from serviceability considerations, through the use of a relatively small mass ratio of the damper liquid. To investigate the nonlinear behavior of the TSD, real-time hybrid testing is conducted in which a single rectangular tank containing water constitutes the prototype TSD. The structure is modeled as a multi-degree-of-freedom system. Two different base input motions, namely harmonic and synthetically generated broad-banded input, are considered. The sensitivity of the TSD performance to tuning ratio vis-à-vis low mass ratio is studied. The experimental results are compared with those obtained from a numerical study carried out using the shallow water wave theory-based nonlinear, semi-empirical model, for the simulation of the sloshing motion of the TSD liquid (water). Results indicate that in the tuned condition, even with a low mass ratio, the TSD is highly effective in the suppression of the small amplitude vibrations, which is underestimated by the simulation model.

show abstract

Section: Introductionmentioning

confidence: 99%

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

Roy

Zhang

Ghosh

et al. 2019

Journal of Vibration and Control

View full text Add to dashboard Cite

show abstract

“…However, most of these studies focus on the application of rectangular and cylindrical TLDs and a limited knowledge on the behavior of annular TLDs is available in the literature. Pioneering bodies of research on the experimental and numerical investigation of TLDs were carried out by Fujino et al (1988), Sun et al (1989) and, Kareem (1990), Fujii et al (1990), Tamura et al (1992), Wakahara et al (1992), Fujino et al (1992), Zhang et al (1993), Zhao and Fujino (1993), Fujino and Sun (1993), Sun and Fujino (1994), Nomura (1994), Sun et al (1995a,b), Tamura et al (1995), Chen et al (1995), Fediw et al (1995), and Koh et al (1995). Most of these works were concerned with rectangular and cylindrical TLDs.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Dynamic Behavior of Annular Tuned Liquid Dampers for Applications in Wind Towers

Ghaemmaghami

Kianoush

Yuan

2012

Computer aided Civil Eng

View full text Add to dashboard Cite

In this study, the performance of annular liquid tanks as a tuned liquid damper (TLD) in mitigating the vibration of wind turbines was investigated using a numerical model. A proposed hybrid wind tower model composed of a concrete shaft and a steel mast with a height of 150 m was simulated using a single‐degree‐of‐freedom system. The structural domain including the tank wall and a rigid mass was modeled using finite element method, while the fluid domain was simulated by finite volume method using CFX software. A parametric study was carried out to investigate the behavior of annular TLD under harmonic loads for different mass and frequency ratios as well as displacement amplitudes. The damping characteristics of the annular TLD model were derived by comparing the numerical results with an equivalent linear model. In addition, the effectiveness of annular TLD was estimated by comparing the numerically calculated damping ratios with those corresponding to the optimum damping ratio values derived for a particular mass ratio based on the concept of tuned mass damper. It was found that that the annular TLD is effective when the amplitude of excitation is small. Moreover, the response of TLD in terms of nonlinear free surface sloshing and the energy dissipated by the system was discussed. Finally, the effectiveness of annular TLD in reducing the structural response of wind turbine towers under random vibrations was evaluated and discussed.

show abstract

“…These excitations depend on various factors such as intensity of wind loads, and size, shape, and dynamic properties of the building (Simiu, 1996). Various methods for mitigation of wind-induced excitations have been investigated (Kareem, 1990;Kareem et al, 1999;Soong, 1997). One of them adds an auxiliary damping device to the main building to increase damping and consequently decrease excitations (Den Hartog, 1934;Warburton and Ayorinde, 1980;Ayorinde and Warburton, 1980;Kareem and Kline, 1995).…”

Section: Introductionmentioning

confidence: 99%

Wind‐induced excitation control of a tall building with tuned mass dampers

Kim

You

Kim

2007

Structural Design Tall Build

View full text Add to dashboard Cite

To investigate the effectiveness of a tuned mass damper (TMD) in suppressing wind-induced excitation motion of a tall building, aeroelastic wind tunnel tests and theoretical analyses were conducted. A 1 : 500 scaled model of an aeroelastic tall building was built, and TMD models of mass ratios of 1% and 2%, respectively, were designed and tested with the building model. This study investigates the contribution of the inherent structural damping of the building model to the effectiveness of the TMD. Spectral analyses were conducted to verify the test results and to perform a parametric study. According to the experimental and analytical investigation, the effectiveness of the TMD increased when the inherent structural damping was decreased in response to both along-wind and the cross-wind directions. The parametric study revealed that a certain TMD damping ratio can maximize the effectiveness of the TMD. 1 1 m my t cy t ky t f ṫ˙( ) + ( ) + ( ) = ( ) WIND-INDUCED EXCITATION CONTROL

show abstract

Reduction of wind induced motion utilizing a tuned sloshing damper

Cited by 4 publications

References 0 publications

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

On the nonlinear performance of a tuned sloshing damper under small amplitude excitation

Numerical Modeling of Dynamic Behavior of Annular Tuned Liquid Dampers for Applications in Wind Towers

Wind‐induced excitation control of a tall building with tuned mass dampers

Contact Info

Product

Resources

About