Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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  • Article
    Citation - Scopus: 1
    Evaluating the Seismic Performance of Advanced Tuned Mass Dampers Considering Soil–Structure Interaction Effect
    (Springer Science and Business Media Deutschland GmbH, 2025) Shahraki, M.A.; Roozbahan, M.
    This study examines the seismic effectiveness of four different tuned mass damper (TMD) configurations: classical TMD, Tuned Mass Damper Inerter (TMDI), Elastoplastic Tuned Mass Damper Inerter (PTMDI), and Dual-Stiffness Tuned Mass Damper (DSTMD), focusing on their ability to reduce structural responses. A model of a 10-story steel shear frame is used, accounting for soil–structure interaction (SSI) effect to represent realistic conditions. The damper parameters are optimized using the Mouth Brooding Fish (MBF) algorithm with a hybrid objective function combining normalized peak displacement and kinetic energy reduction. The optimization process is tested against fourteen near- and far-field earthquake scenarios, with an additional ten records used to validate performance. The findings reveal that, under fixed-base conditions, TMD and TMDI achieve the largest displacement reductions (37.6% and 37.5%, respectively), while PTMDI provides the greatest kinetic energy mitigation (56.4%). DSTMD shows moderate reductions in both responses (≈ 23% displacement, 29.3% energy). When soil–structure interaction is considered, the efficiency of all systems decreases. TMDI maintains the best displacement reduction (12.9%), whereas PTMDI offers the highest energy reduction (25.5%). Additional assessments of roof acceleration and base shear highlight important trade-offs, stressing the importance of a multidimensional evaluation. In summary, this research underscores the significance of energy-based metrics and the influence of the SSI effect in evaluating dampers. Instead of advocating for or against any specific system, the analysis offers a comparative perspective on their performance under various conditions, helping to inform decisions in performance-based seismic design. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 5
    Optimization of Tuned Mass Dampers by Considering Soil-Structure Interaction and Uncertainty in Soil Parameters
    (ASCE-Amer Soc Civil Engineers, 2025) Roozbahan, Mostafa; Turan, Guersoy
    The tuned mass damper (TMD) is one of the oldest and most widely used passive control devices, designed to absorb lateral energy from structures and mitigate vibrations. Various methods have been proposed for the optimal design of TMDs to minimize structural responses in buildings. However, many of these approaches overlook soil-structure interaction (SSI). Among the few studies that do account for SSI, most rely on certain soil parameter values. In reality, however, soil parameters are uncertain and can vary due to environmental factors such as soil water content. This study introduces an innovative method for optimizing TMDs by incorporating soil parameter uncertainties. The method's effectiveness is evaluated by comparing TMDs optimized using the proposed approach, TMD designed by incorporating soil parameter uncertainties (TMD-UNC) with those optimized using certain soil parameters values (TMD-CRT) and those optimized without SSI consideration (TMD-FB). A 6-story shear building model with 200 uncertain soil scenarios is used for the comparison. The results showed that, on average, TMDs optimized for uncertainty marginally outperformed TMD-CRT-Mid, which is optimized with the midpoint of soil parameter ranges. However, these TMDs outperformed TMDs optimized for stiffest and softest soil conditions in reducing responses of uncertain systems. All these TMDs proved significantly more effective at reducing structural responses than the TMD designed for a fixed-base condition.