Modified liquid column damper for vibration control of structures

Alsaif, K.; Al-Dakkan, Khalid A.; Foda, Mosaad A.

doi:10.1016/j.ijmecsci.2011.04.007

Cited by 67 publications

(61 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5. The equations of motion of the structure, liquid column and ball can be written as [5] For structure:…”

Section: Equations Of Motionmentioning

confidence: 99%

“…There are several invariants of passive TLCDs proposed by many researchers. They are U-shaped TLCD (U-TLCD) [1], liquid column damper with period adjustment equipment (LCD-PA) [2], liquid column vibration absorber (LCVA) [3], U-shaped TLCD for short period structures [4], V-shaped TLCD (V-TLCD) [3], tuned liquid column ball damper (TLCBD) [5], sealed TLCD [6], tankpipe damper (T-P damper) [7] and pendulum type liquid column damper (PLCD) [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Performance of Different Tuned Liquid Column Dampers (TLCDs)

Kalva

Ray-Chaudhuri

2014

Advances in Structural Engineering

View full text Add to dashboard Cite

Many of the modern slender and flexible structures are highly susceptible to wind-and earthquake-induced vibrations, which may result in damage to these structures. Of late tuned liquid column dampers (TLCD) has drawn significant attention of researchers. In TLCD, the motion of liquid column in a U-tube container counteracts the forces acting on the structure resulting in reduction of structural response. The advantages of TLCD include low cost and maintenance. There are many varieties of TLCDs proposed for vibration control. In this study, the efficiency in vibration suppression of four different types of passive TLCDs has been compared. These are U-shaped TLCD, liquid column vibration absorber (LCVA), V-shaped TLCD and tuned liquid column ball damper (TLCBD). For this purpose, the response of an SDOF system with and without TLCD is evaluated when subjected to harmonic excitation of varying frequencies and excitation levels. Transfer functions are evaluated for uncontrolled and controlled (i.e., with TLCD) cases by using an equivalent linearization approach for the non-linear TLCD damping. Further, a numerical method is also used for solving equations of motion involving non-linear damping of TLCDs. Results are presented in terms of percentage reduction in SDOF system response. The results of this work demonstrate that TLCBD has better performance when compared to other TLCDs.

show abstract

“…5. The equations of motion of the structure, liquid column and ball can be written as [5] For structure:…”

Section: Equations Of Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of Performance of Different Tuned Liquid Column Dampers (TLCDs)

Kalva

Ray-Chaudhuri

2014

Advances in Structural Engineering

View full text Add to dashboard Cite

show abstract

“…Chan and Ding [13] conducted structural experiments to compare the damping effects of TLCDs with liquid columns of different lengths and tilt angles. To make TLCDs more effective in reducing structural vibrations, Al-Saif et al [14] modified a TLCD by placing a coated steel ball as a moving orifice inside the horizontal section of the damper instead of the orifice plate and disturbed the flow so as to improve the absorber's attenuation performance. In recent years, TLCDs of different forms have been developed as their range of applications has broadened.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Variation Rules of Damping with Influential Factors of Tuned Liquid Column Damper

Zhang

2017

Shock and Vibration

View full text Add to dashboard Cite

A tuned liquid column damper (TLCD) is a more effective form of passive control for structural vibration suppression and may be promising for floating platform applications. To achieve good damping effects for a TLCD under actual working conditions, factors that influence the damping characteristics need to be identified. In this study, the relationships between head loss coefficients and other factors such as the total length of the liquid column, opening ratio, Reynolds number, Kc number, and horizontal length of the liquid column were experimentally investigated. By using a hydraulic vibration table, a vibration test system with largeamplitude motion simulation, low-frequency performance, and large stroke force (displacement) control is devised with a simple operation and at low cost. Based on the experimental method of uniform design, a series of experimental studies were conducted to determine the quantitative relationships between the head loss coefficient and other factors. In addition, regression analyses indicated the importance of each factor affecting the head loss coefficient. A rapid design strategy of TLCD head loss coefficient is proposed. This strategy can help people conveniently and efficiently adjust the head loss coefficient to a specified value to effectively suppress vibration.

show abstract

“…A reasonable method to reduce vibrations of floating platforms is through the use of structural control devices typically employed in civil structures [10][11][12][13][14]. Among many types of structural control devices traditionally available, tuned liquid dampers (TLDs) may be favourable for application in the offshore floating wind energy devices for their relatively high performance and low cost [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

Jaksic

Wright

Murphy

et al. 2015

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

In this paper, we experimentally study and compare the effects of three combinations of multiple tuned liquid column dampers (MTLCDs) on the dynamic performance of a model floating tension-leg platform (TLP) structure in a wave basin. The structural stability and safety of the floating structure during operation and maintenance is of concern for the performance of a renewable energy device that it might be supporting. The dynamic responses of the structure should thus be limited for these renewable energy devices to perform as intended. This issue is particularly important during the operation of a TLP in extreme weather conditions. Tuned liquid column dampers (TLCDs) can use the power of sloshing water to reduce surge motions of a floating TLP exposed to wind and waves. This paper demonstrates the potential of MTLCDs in reducing dynamic responses of a scaled TLP model through an experimental study.

show abstract

Modified liquid column damper for vibration control of structures

Cited by 67 publications

References 23 publications

Comparison of Performance of Different Tuned Liquid Column Dampers (TLCDs)

Comparison of Performance of Different Tuned Liquid Column Dampers (TLCDs)

Experimental Study on Variation Rules of Damping with Influential Factors of Tuned Liquid Column Damper

Dynamic response mitigation of floating wind turbine platforms using tuned liquid column dampers

Contact Info

Product

Resources

About