Effects of pendulum tuned mass dampers on the dynamic response of jacket platforms

Pourzangbar, Ali; Vaezi, Mostafa

doi:10.1016/j.oceaneng.2022.110895

Cited by 14 publications

(2 citation statements)

References 31 publications

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“…Te mass ratios of proposed DTPMD-PD and the conventional TMD are both set at 1%. Te optimal tuning parameters of DTPMD-PD are calculated from equations (18) to (22). Te frequency ratio and damping ratio of the conventional TMD are calculated from the formulas derived from base-isolated structures [48].…”

Section: Seismic Performance In a 10-dof Structurementioning

confidence: 99%

“…Villoslada et al [17] studied the optimization method of TMD parameters for vibration reduction of a foating ofshore wind turbine by considering the conditions of mass and stroke limitations in TMD application. Pourzangbar and Vaezi [18] investigated the efects of pendulum-tuned mass damper confguration as well as structural excitation frequency by ocean waves on the dynamic response of a jacket platform. Wang et al [19] developed a newly combined damping system containing a TMD and a multiple unidirectional single-particle damper and conducted a series of shaking table tests to investigate the performance of the system.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Seismic Performance In a 10-dof Structurementioning

confidence: 99%