1. Laboratory for multiscale mechanics and medical science SV LAB, School of Aerospace Xi'an Jiaotong University Xi'an 710049 China
2. Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University Beijing 100084 China
3. State Key Laboratory of Tribology Tsinghua University Beijing 100084 China
4. Department of Engineering Mechanics School of Civil Engineering Wuhan University Wuhan 430072 China