بررسی پارامترهای طراحی سامانه میراگر جرمی با اینرتر متصل به طبقات مختلف مدل ساختمان برشی

In the present work, the factors influencing the design and performance of a tuned mass damper with inerter (TMDI) for seismic control of a benchmark shear building are investigated. Time-history analyses are performed using two near-field and two far-field earthquake records. A benchmark shear building model with two percent Rayleigh damping is treated. The optimal frequency ratio and damping ratio of TMDI are obtained for each case of connecting the inerter terminal to various floors with the fixed mass and inertance ratios.
The optimization objective is the infinity norm of the roof-displacement transfer function to be minimized by the well-known particle swarm optimizer. According to the results, the optimized TMDI system can significantly reduce the dynamically structural responses. It is also found that the optimal frequency and damping ratios may increase for more inertance ratios. Additionally, connecting the second terminal of the inerter device to the lower floors improves the performance of the optimized TMDI system under the exerted earthquakes.