PSI - Issue 78

Enrico Bernardi et al. / Procedia Structural Integrity 78 (2026) 599–606

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The model enables the calculation of optimal, dimensionless parameters for the isolation system as a function of the mass ratio ( μ ) and a performance parameter ( β ), which reflects the desired trade-off between the different objectives of the optimization process. The case study demonstrates that an optimized IIS is an effective strategy for enhancing the performance of the substructure. Furthermore, the multi- objective approach allows for the evaluation of the isolated superstructure’s performance, which can be par ticularly relevant depending on the building’s intended use. Finally, the results confirm the reliability of the proposed model. In particular, the outcomes observed for varying values of the performance parameter β are consistent with expectations and align with the initial assumptions of the optimization process. References Ambraseys N., Smit P., Sigbjornsson R., Suhadolc P., Margaris B., 2002. Internet-Site for European Strong-Motion Data. 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