The paper presents a proposed framework to optimize the tuned mass damper (TMD) design, useful for seismic improvement of slender masonry structures. A historical chimney located in northern Italy was considered illustrate TMD design procedure and evaluate performance system. optimization process subdivided into two fundamental phases. In first phase, main parameters were defined starting from ...

Tuned mass damper (TMD) have been studied and installed in structures extensively to protect the structures against lateral loads. Multiple tuned mass dampers (MTMDs) which include a number of TMDs with different parameters have been proposed for improving the performance of single TMDs. When the structural system is considered as multiple degrees of freedom (MDOF) and implemented with MTMDs, t...

Over the past 10 years there has been a growing need to introduce closed-loop control technology for vibration suppression of buildings subject to wind or earthquake disturbances. This paper deals with the investigation of the effectiveness of a fuzzy logic based time variable damping tuned mass damper (TMD) on a building structure undergoing free and forced vibrations. The uniqueness of this a...

The hysteretic damping tuned mass damper (HD-TMD) is composed of a spring element, (HD) and mass. HD force proportional to the displacement (TMD). Recently, application HD-TMD has emerged, but its optimal design still lacking. To fill this academic gap, numerical solutions for parameters subjected white-noise excitation were obtained based on H2 optimization criterion. Performance balance with ...

To increase the effectiveness and robustness of a single Tuned mass damper (TMD), TMDs are connected in series or parallel to main system. Unlike (PTMD), (STMD) consist only two different TMD units, each which is structure series. The optimum parameters obtained by using simulated annealing (SA) algorithm this study. It aimed minimize displacement system obtaining parameters. Also, explicit for...

This study considers a novel nonlinear system, namely cable-stayed beam with tuned mass damper (cable-beam-TMD model), allowing the description of energy transfer among beam, cable and TMD. In this vibration TMD is involved one-to-one-to-one internal resonance modes investigated when external primary occurs. Galerkin’s method utilized to discretize equations motion cable. way, set ordinary diff...

In recent decades, the dual systems of steel moment-resisting frames and RC shear walls have found extensive application as lateral load-resisting systems for high-rise structures in seismically active areas. This paper investigated the effectiveness of tuned mass damper (TMD), viscous damper, friction damper, and the lead-core rubber bearing in controlling the damage and seismic response of hi...

The roughness origin of machined surfaces is caused by the following physical causes: copying shape and cutting part tool into workpiece, existence vibration tool, build-up edge (BUE) on edge. current work aims to analyze amplitude tools. was observed hardened steel workpieces. Internal turning technology used, we used several different boring bars (steel; carbide; tuned mass damper—TMD; impact...

Abstract A double tuned mass damper (DTMD) for suppressing oscillations of civil structures is proposed in this study. DTMD a combination an undamped TMD and smaller TMD. The impact parameters on the essential characteristics, as well vibration absorption capacity DTMD, investigated. Using genetic algorithms (GA), optimum are determined by minimizing peak dynamic magnification factor structural...