TUNING STRATEGIES AND PLACEMENTS FOR DISTRIBUTED MULTIPLE TUNED MASS DAMPERS FOR WIND-INDUCED VIBRATION CONTROL IN HIGH-RISE BUILDINGS

摘要

Tuning frequency and TMD placement have a great impact of the effectiveness of a control device. A comparative study between three tuning and placement strategies for distributed multiple tuned mass dampers for vibration control in high-rise buildings was conducted. A new design approach based on Differential Evolution was introduced and used to optimize damping, stiffness and placement for a controller with known mass. The proposed approach implemented an iterative optimization of the MTMD by updating structural parameters and the tuning frequency after every iteration. The Designs produced by the three methods were evaluated. A frequency response analysis was performed, and the effectiveness of the control systems was measured through their ability to reduce average and maximum RMS and peak displacement and acceleration time responses.