Tuned liquid column damper for structural control

Hochrainer, Markus J.

doi:10.1007/s00707-004-0193-z

Cited by 43 publications

(37 citation statements)

References 16 publications

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“…In addition, the V-shaped TLCD had been designed to strengthen the vibration suppression. A dynamic equation of a TLCD of general shape was derived by Hochrainer [32] utilising the extended Bernoulli equation. Min et al [33] proposed a tuned liquid mass damper for bidirectional control of the wind responses of a building in orthogonal directions.…”

Section: Coupling Calculation Modelmentioning

confidence: 99%

A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms

Zeng¹,

Yu²,

Zhang³

et al. 2014

Energies

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Deep-sea floating platforms are one of the most important large structures for ocean energy exploitation. A new energy-absorbing device named S-shaped Tuned Liquid Column Damper (TLCD) has been invented for the suppression of the horizontal motion and vertical in-plane rotation of a deep-sea floating platform. A conventional tuned liquid column damper has a U-shaped water tunnel to absorb the excessive energy of the main structure. The application of U-shaped dampers in deep-sea floating platforms is difficult due to the restriction of a large horizontal length. A novel S-shaped damper is proposed to retain the same amount of liquid using a shorter S-shaped tunnel. Theoretical and experimental works are conducted and prove that an S-shaped damper needs less than half the horizontal length to provide the same suppression as a U-shaped damper. A coupling calculation model is proposed and followed by the sensitivity analysis. The study demonstrates the applicability of the novel S-shaped damper for the motion suppression in deep-sea floating platforms.

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Section: Coupling Calculation Modelmentioning

confidence: 99%

A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms

Zeng¹,

Yu²,

Zhang³

et al. 2014

Energies

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“…The results of free vibration and forced vibration experiments showed that it is effective to control structural torsional response (Hochrainer et al, 2000), but how to determine the parameters of CTLCD to effectively reduce torsionally coupled vibration is still necessary to be further investigated. In this section, the optimal parameters of CLTCD for vibration control of structures are presented based on the stochastic vibration theory.…”

Section: Circular Tuned Liquid Dampersmentioning

confidence: 99%

“…Circular Tuned Liquid Column Dampers (CTLCD) is a type of control device sensitive to torsional response. The results of free vibration and forced vibration experiments showed that it is effective to control structural torsional response (Liang, 1996;Hochrainer, 2000). However, how to determine the parameters of CTLCD to effectively reduce torsionally coupled vibration is still necessary to be further investigated.…”

Section: Torsionally Coupled Vibration Control Of Eccentric Buildingsmentioning

confidence: 99%

Seismic Response Reduction of Eccentric Structures Using Liquid Dampers

Huo¹,

Li²

2011

Vibration Analysis and Control - New Trends and Developments

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“…Hochrainer [5] presented a detailed derivation of their working principle and applied a bang-bang control scheme based on linear optimal control to reduce transient vibrations. Hitchcock et al [6][7][8] optimized the original TLCDs by varying their cross section to overcome their narrow frequency band.…”

Section: Introductionmentioning

confidence: 99%

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

Zhang

2017

Shock and Vibration

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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.

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Tuned liquid column damper for structural control

Cited by 43 publications

References 16 publications

A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms

A New Energy-Absorbing Device for Motion Suppression in Deep-Sea Floating Platforms

Seismic Response Reduction of Eccentric Structures Using Liquid Dampers

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

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