1. Dipartimento di Ingegneria Civile, Edile-Architettura e Ambientale (DICEAA), University of L’Aquila, L’Aquila, Italy; International Research Center for the Mathematics and Mechanics of Complex Systems (M&MoCS), University of L’Aquila, L’Aquila, Italy
2. International Research Center for the Mathematics and Mechanics of Complex Systems (M&MoCS), University of L’Aquila, L’Aquila, Italy
3. Dipartimento di Ingegneria Strutturale e Geotecnica (DISG), University of Rome La Sapienza, Rome, Italy
4. Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMA), University of Rome La Sapienza, Rome, Italy; International Research Center for the Mathematics and Mechanics of Complex Systems (M&MoCS), University of L’Aquila, L’Aquila, Italy