| 1 | MD simulation of the effect of contact area and tip radius on nanoindentation显示文摘Molecular dynamics simulations of nanoindentation are performed on monocrystal copper. A new contact atoms method is presented for calculating the contact area. Compared with conventional methods, this method can provide the contact area more accurately not only for sink-in but also for pile-up situation. The effect of tip radius on indentation is investigated too. The results indicate that the measured hardness of the material will become higher as the tip radius increases. | CHEN Shangda1,2 & KE Fujiu1,2 1. Department of Applied Physics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China 2. State Key Laboratory of Non-linear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China Correspondence should be addressed to Chen Shangda (email: chensd@lnm.imech.ac.cn) Received August 27, 2003 | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，1： | 4 |
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