1. School of Mechanical and Aerospace Engineering
2. Nanyang Technological University
3. Singapore 639798
4. Singapore
5. Department of Civil and Environmental Engineering
6. Massachusetts Institute of Technology
7. Cambridge
8. Massachusetts 02139
9. USA
10. International Center for Applied Mechanics
11. State Key Laboratory for Strength and Vibration of Mechanical Structures
12. Xi’an Jiaotong University
13. Xi'an 710049
14. P. R. China