1. College of Mechanics and Materials, Hohai University, Nanjing, People's Republic of China
2. CRRC Qishuyan Institute Co., Ltd., Changzhou, People's Republic of China
3. Key Laboratory of Geomechanics and Embankment Engineering, Hohai University, Ministry of Education, Nanjing, People's Republic of China
4. Shaanxi Aeronautic Carbide Tool Co., Ltd., Hanzhong, People's Republic of China