The impact of the frequency content of far-field earthquakes on the optimum parameters and performance of tuned mass damper inerter

• DOI: 10.1016/j.istruc.2024.105925
• Publication Date: 2024-01-23T12:24:26Z
• Authors: Danial Farsijani; Samaneh Gholam; Hassan Karampour; Nima Talebian
• Keywords: Tuned mass damper

Tuned mass damper inerter is a passive control device that proven to be effective in mitigating structural responses under earthquake excitations, however, its efficiency highly depends on design parameters. This paper aims investigate how the optimum parameters of TMDI change with frequency content far-field earthquakes minimize need for repeatedly optimizing these varying and characteristics. To achieve this objective, ratio earthquake's structure's defined as an index simultaneously represent structure earthquake. Case studies 5, 10, 15, 20-story building structures are analyzed twenty-three which categorized into three main groups based their (PGA/PGV) including “Low”, “Intermediate”, “High”. Particle Swarm Optimization (PSO) employed obtain damping two distinct objective functions: (1) peak displacement (2) acceleration top story time domain analysis. validate applicability proposed method determining optimal regardless frequency, 10-story benchmark employed. Moreover, study demonstrates effectiveness minimizing functions concerning It also illustrates trend PSO optimization process. The results show provides discernible pattern variation TMDI. Furthermore, it demonstrated difference response between tuning algorithm suggested less than 3 % when greater 1. As increases, will correspondingly increase. indicate that, increment inertance leads increase value among all analyzed, those subjected intermediate exhibit most significant reduction both functions.