1. Department of Aerospace Engineering, Seoul National University, Seoul, South Korea;
2. Department of Aeronautical Structure Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi, China;
3. Joint International Research Laboratory of Impact Dynamics and its Engineering Applications, Xi’an, Shaanxi, China;
4. Institute of Advanced Aerospace Technology, Seoul National University, Gwanak-gu Gwanak-ro 1, Seoul, South Korea