This paper describes a semi-active vibration absorber (SVA) concept based on a real-time controlled magnetorheological damper (MR-SVA) for the enhanced mitigation of structural vibrations due to harmonic disturbing forces. The force of the MR damper is controlled in real-time to generate the frequency and damping controls according to the behaviour of the undamped vibration absorber for the act...

Article history: Received: 19.05.2014. Received in revised form: 13.08.2014. Accepted: 27.08.2014. This paper reports a novel control strategy combined with artificial intelligence for windinduced vibration control of a high-rise structure and also provides a broader idea for traditional structural vibration control. The fast Fourier transform based on decimation-in-time was used to optimize th...

The present paper deals with the optimisation of a hybrid Tuned Mass Damper (TMD) in reducing the transient structural response due to impulse loading. In particular, a unit impulse excitation has been assumed, acting as base displacement, which is a situation that may occur in different real applications. The proposed hybrid Tuned Mass Damper is composed of a previously optimised passive TMD a...

Tuned mass damper (TMD) has a wide application in the human-induced vibration control of pedestrian bridges and its parameters have great influence on the control effects, hence it should be well designed. A new optimization method for a TMD system is proposed in this paper, based on the artificial fish swarm algorithm (AFSA), and the primary structural damping is taken into consideration. The ...

Abstract Post switchgear of substation in a gale area is typical wind-sensitive structure. In order to reduce the wind-induced response post area, this paper, according theoretical formula optimal frequency ratio and damping TMD given by Den Hartog, tuned mass damper (TMD) proposed vibration first-order mode outside plane The Simulink simulation model simplified structure with established fluct...

The objective of this MCEER educational project is to develop Java-based Virtual Laboratories for Earthquake Engineering (VLEE) as a Tri-Center collaborative effort to produce online resources for earthquake engineering education. This task is a part of MCEER’s Center-wide effort to develop educational modules, in which various Java-Powered Virtual Laboratories (VLs) have been developed to prov...

A particle impact damper (PID) dissipates the vibration energy of a structure through impacts within damper. The PID is not commonly used in practice mainly because its low damping-to-mass ratio and difficulty achieving optimal design due to nonlinear characteristics. In contrast, Coulomb friction (FD) can offer higher damping force-to-mass than other dampers, but it also difficult be controlle...

A tuned mass damper (TMD) is a vibration control system used to reduce the structural responses earthquakes and extreme wind loads. The performance of TMD depends on its parameters, such as mass, damping coefficient, stiffness. Therefore, several methods have been proposed optimize parameters TMDs. This paper proposes new method for optimizing TMDs' using Mouth Brooding Fish (MBF) algorithm bas...

Dual-function amplifiers are proposed for the first time herein enhancing capability of a scanning test vehicle bridges. To start, closed-form solutions derived dynamic responses amplifier-vehicle-bridge system with moving vehicle. Then, amplification factors amplifier and presented assessing bridge/vehicle vehicle/amplifier transmissibility. It was known that spectrum may be hindered extractin...