Active tuned mass damper (ATMD) systems have attracted the considerable attention of researchers for protecting buildings subjected to earthquake loading. This paper presentes the development of an optimal sliding mode control (OSMC) system for a building equipped with ATMD. In the OSMC technique, a linear sliding surface is used with the slope of this surface designed such that a given (or des...

Recent Italian earthquakes have shown the high seismic vulnerability of pallet racking systems. In down-aisle direction and in absence bracing systems, these structures are very flexible moment-resisting frames. Instead, cross-aisle they consist slender trusses, stiffened by various systems; latter, although necessary for lateral stability, attract significant accelerations, which can cause sto...

Tuned mass dampers (TMD), active mass dampers (AMD) and hybrid mass dampers (HMD) have been widely applied for vibration control of tall buildings and bridges in the past decade. Recently, the author and his coworkers have developed semiactive or smart tuned mass dampers (STMD) using semiactive variable stiffness systems. STMD’s are superior than TMD’s in reducing the response of the primary st...

Abstract The architectural requirements imposed on the structural design of buildings sometimes necessitate vertical and horizontal irregularities with their possibly dangerous effects when these structures are subjected to earthquakes. One greatest challenges in engineering is a steel high-rise building (HRB) irregularities. In this research, two irregular (HRBs) were seismically analyzed as 3...

To investigate the use of vibration control systems in fatigue damage mitigation for welded beam-to-column connections steel high-rise buildings, cases both a single connection under constant amplitude cyclic loading and multi-connections building stochastic wind, with without fluid viscous damper (VFD) tuned mass (TMD), are discussed respectively. The finite element analysis assessment conduct...

Abstract Anti-seismic devices are employed to implement the best performance of structures under earthquakes. In this paper, semi-active tuned mass dampers (SA-TMDs) studied by considering several combinations variable friction forces and external disturbances. The damping model is used, where goal consists in estimating actions find force for system dampening. particular, general, sinusoidal, ...

Objective. In order to control the vibration of beam structure more effectively and improve safety availability structure, an application study Lagrange equation for smart sensors power grid monitoring is proposed. The displacement under excitation seismic acceleration, response analytical electrical formula, formula action kinematic force are deduced. optimal parameters beam-TMDI system given,...

A hydraulic engine mount (HEM) is an advanced tuned mass damper (TMD) system used to isolate the noise and vibration from chassis. This paper aims design a semiactive HEM based on TMD model, which only tunes damping without affecting other lumped parameters of system. Firstly, dynamic equations modeled as are derived linear parameter model (LPM). Each analyzed identify relevant that affect damp...