1. International Center
for Applied Mechanics, State Key Laboratory for Strength and Vibration
of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China
2. Department
of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
3. State Key Laboratory for Strength and Vibration
of Mechanical Structures, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, China
4. School of Engineering, Brown University, Providence, Rhode Island 02912, United States