PSI - Issue 78

Melina Bosco et al. / Procedia Structural Integrity 78 (2026) 441–448

448

equivalent viscous damping ratio has been established based on the results of a parametric analysis conducted on a large set of SDOF systems. These results have been used to calibrate the coefficients of the proposed expression. Future developments of this work will cover the application of the proposed formulation for the prediction of the equivalent viscous damping ratio of multistorey buildings. Further, the proposed methodology will be applied in the case of systems with sources of damping due to non-structural elements such as infills. References Amara, F., Bosco, M., Marino, E. M., Rossi, P. P. An accurate strength amplification factor for the design of SDOF systems with P -Delta effects. Earthquake Eng. Struct. Dyn. vol. 43, pp. 589-611, 2014. https://doi.org/10.1002/eqe.2361 Barbagallo, F., Bosco, M., Marino, E. M., Rossi, P. P. On the fibre modelling of beams in RC framed buildings with rigid diaphragm. Bull. 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