1. College of Transportation, Ludong University, Yantai, Shandong 264025, People’s Republic of China
2. Faculty of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, Liaoning 121001, People’s Republic of China
3. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, People’s Republic of China