Experimental study on damping performance of a pounding tuned mass damper to vibration suppression of vortex-induced vibration

Yang, Wanli; Yang, Sijie; Zhang, Zhichao; Wang, Ning; Song, Gangbing

doi:10.1016/j.oceaneng.2022.110860

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…Moreover, robustness was investigated numerically and experimentally by Li et al [28], and it has been demonstrated that the PTMD is more robust under frequency detuning situations than the conventional TMD system. Yang et al [29] also study PTMD damping performance and robustness to the vortex-induced vibration of the main structure in water fow. Additionally, the efect of the PTMD on structures during earthquakes was also studied [30,31].…”

Section: Introductionmentioning

confidence: 99%

A Double-Tuned Pendulum Mass Damper Employing a Pounding Damping Mechanism for Vibration Control of High-Rise Structures

Wang

Yang

et al. 2023

Structural Control and Health Monitoring

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Recently, enhancing conventional tuned mass dampers (TMDs) with a pounding damping mechanism is demonstrated to be an efficient way for vibration control of flexible structures. In this paper, a double-tuned pendulum mass damper employing a pounding damping mechanism (DTPMD-PD) is proposed. DTPMD-PD dissipates energy through the collision between distributed balls with a smaller mass and viscoelastic (VE) boundary, which can effectively reduce noise during operation compared to conventional impact dampers. Moreover, DTPMD-PD utilizes a double-tuning mechanism, and its control performance is significantly enhanced. The motion equations of a multiple degree of freedom (MDOF) structure equipped with DTPMD-PD are formulated. Based on the H∞ optimization criterion, a numerical optimization is performed to obtain the optimal design parameters of DTPMD-PD. Additionally, the pounding dissipation capacity and the parametric identification of the impact force model are investigated through free pounding experiments, and the control performance and robustness of DTPMD-PD are experimentally studied in the laboratory. The results show that the proposed numerical modeling method has considerable accuracy through experimental verifications. The restitution coefficient of the pounding layer has a significant influence on the performance of proposed DTPMD-PD. Optimized DTPMD-PD has better effectiveness than conventional TMDs under harmonic and seismic loads.

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