1. École Nationale d'Ingénieurs de Brest ENIB UMR CNRS 6027, IRDL, F‐29200 Brest France
2. International Research Center on Mathematics and Mechanics of Complex Systems (M&MOCS) University of L'Aquila L'Aquila Italy
3. Civil, Environmental and Architectural Engineering Department The University of Kansas 1530 W. 15th Street Lawrence Kansas 66045‐7609 USA
4. Faculty of Engineering International Telematic University Uninettuno Rome Italy
5. Department of Architecture, Design and Urban Planning (DADU) University of Sassari Sessari Italy