The aim of this paper is to investigate the effect of time delays on the stability of a zero-placement position and velocity feedback law for a vibratory system comprising harmonic excitation equipped with an electromagnetic active tuned mass damper (ATMD). The purpose of the active control is broadening the vibration attenuation envelope of a primary mass to a higher frequency region identifie...

A shaking table experiment conducted on a multi-degrees-of-freedom frame structure equipped with non-conventional tuned mass damper (TMD) is presented. The TMD characterized by high ratio, without adding further structural masses, and realized via inter-story isolation. top story of four-story steel isolated converted into mass, connecting to the substructure two damping rubber bearings placed ...

The major concern in the construction industry in constructing tall structures is vibration due to wind and earthquake. Tuned mass dampers are an effective and practical ways to reduce the effect of vibration in structures. This thesis presents a tool, which simulates the effect of tuned mass dampers on the structure. This tool has been proposed to form a part of the website, moment.mit.edu. Ja...

This study examines the optimal design of a tuned mass damper (TMD) in frequency domain so that dynamic response cantilever beams can be decreased. Random vibration theory is applied to identify mean square acceleration endpoint beam as objective function reduced. In addition, determine TMD coefficient mass, stiffness, and damping, differential evolution (DE) optimization algorithm employed. Th...

The application of dynamic vibration absorbers (DVA) to Wind Turbine (WT) towers has the potential significantly improve damping tower and nacelle responses, increasing thus reliability WTs. Tuned Mass Damper (TMD) is limited by requirement large masses, in association its installation location. In this study, two alternative concepts are considered. First, released from WT tower, using a low s...

In recent years, tuned mass damper (TMD) control systems for civil engineering structures have attracted considerable attention. This paper emphasizes on the application of particle swarm application (PSO) to design and optimize the parameters of the TMD control scheme for achieving the best results in the reduction of the building response under earthquake excitations. The Integral of the Time...

When high-rise buildings are shaken due to external forces, the facilities of building can be damaged. A Tuned Mass Damper (TMD) resolve this issue, but seismic resistance TMD is exhausted detuning effect. The Impulsive Semi-Active (ISAMD) proposed with fast coupling and decoupling at active joint between mass structure overcome proof effects a ISAMD were compared. numerical analysis results in...

In recent years, the Tuned Mass Damper with inerter (TMDI) has received significant attention. The is defined to exert a force that in proportion relative acceleration of two terminals. Here, TMDI topologies are investigated. conventional topology given by being parallel spring and viscous damper TMDI. other serial arrangement spring, stiffness mass oscillator While first intends increase inert...