1. Key Laboratory of Road Construction Technology and Equipment of MOE, Chang'an University, Xi'an, China.
2. Department of Mechanical Engineering, Inha University, Incheon, Republic of Korea.
3. State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, China.