1. Ph.D. Candidate, College of Aerospace Science and Engineering, National Univ. of Defense Technology, No. 109 Deya Rd., Changsha, Hu’Nan Provence 410073, China; Ph.D. Candidate, Dept. of Mechanical Engineering, Univ. of British Columbia, 6250 Applied Science Ln., Vancouver, BC, Canada V6T 1Z4 (corresponding author).
2. Associate Professor, Dept. of Mechanical Engineering, Univ. of British Columbia, 6250 Applied Science Ln., Vancouver, BC, Canada V6T 1Z4.
3. Professor, College of Aerospace Science and Engineering, National Univ. of Defense Technology, No. 109 Deya Rd., Changsha, Hu’Nan Provence 410073, China.