Optimization of tuned liquid column dampers

Gao, Hui; Kwok, K.C.S.; Samali, Bijan

doi:10.1016/s0141-0296(96)00099-5

Cited by 223 publications

(96 citation statements)

References 8 publications

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“…Researchers have analysed the characteristic parameters of vibration suppression with TLCDs and formulated optimisation design methods for high-rise building [34][35][36]. None of research has referred to a solution for deep-sea floating platforms and the impact analysis of the characteristic parameters of TLCDs applied on deep-sea floating platforms.…”

Section: Sensitivity Analysismentioning

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: Sensitivity Analysismentioning

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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“…Damping forces are provided by the head loss from the liquid motion change near orifices and corners, and the friction between the liquid and columns' inner surfaces. Extensive research has been done regarding both theoretical analyzes [1][2][3][4] and practical applications of TLCDs [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

A novel tuned liquid wall damper for multi-hazard mitigation

Cao

Chen

et al. 2017

Active and Passive Smart Structures and Integrated Systems 2017

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A structural system consists of gravity and lateral load resisting components. Structural walls in the gravity system are typically designed to resist vertical loads only, and are assumed to be inactive to mitigate lateral loads. In this paper, we propose a novel multifunctional wall system, which is embedded with multiplecapillaries containing free-flowing fluids and can act as both a load carrying member and a Tuned Liquid Wall Damper (TLWD). Functioning similarly to a Tuned Liquid Column Damper (TLCD), the damping force of the proposed wall system is provided by the head loss of the fluid between each capillary. An analytical model is derived first to describe the dynamic behavior of the TLWD. The accuracy of the analytical model is verified using Computational Fluid Dynamics (CFD) simulations. The model is further used to compute the reduced response of an assumed primary structure attached with a TLWD to demonstrate the damping capability. Results show that TLWDs can effectively dissipate energy while occupying much less space in buildings compared to TLCDs. ABSTRACTA structural system consists of gravity and lateral load resisting components. Structural walls in the gravity system are typically designed to resist vertical loads only, and are assumed to be inactive to mitigate lateral loads. In this paper, we propose a novel multifunctional wall system, which is embedded with multiple-capillaries containing free-flowing fluids and can act as both a load carrying member and a Tuned Liquid Wall Damper (TLWD). Functioning similarly to a Tuned Liquid Column Damper (TLCD), the damping force of the proposed wall system is provided by the head loss of the fluid between each capillary. An analytical model is derived first to describe the dynamic behavior of the TLWD. The accuracy of the analytical model is verified using Computational Fluid Dynamics (CFD) simulations. The model is further used to compute the reduced response of an assumed primary structure attached with a TLWD to demonstrate the damping capability. Results show that TLWDs can effectively dissipate energy while occupying much less space in buildings compared to TLCDs.

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“…Gao et al [4] optimized the parameters of T LCD with different cross-sectional area in its vertical and horizontal sections for controlling structural vibrations. The performance of liquid column vibration absorber (LCVA) which allows the column cross-section to be non-uniform was studied by Hitchcock et al [5].…”

Section: Introductionmentioning

confidence: 99%