1. Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, China
2. National Demonstration Center for Experimental Mechanical Engineering Education, School of Mechanical Engineering, Shandong University, Jinan, China
3. Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, China
4. Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA