1. Post-Doctoral Student, Dept. of Civil and Environmental Engineering, Univ. of Berkeley, Berkeley, CA 9472-1710; formerly, Ph.D. Student, Applied Computing and Mechanics Laboratory (IMAC), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland (corresponding author).
2. Professor, Applied Computing and Mechanics Laboratory (IMAC), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.