1. Associate Professor, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong Univ., No. 800 Dongchuan Rd., Shanghai 200240, P.R. China (corresponding author).
2. Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong Univ., Shanghai 200240, P.R. China.