Study of mechanical properties of amorphous copper with molecular dynamics simulation
Wang Guang-Hai(王广海)a), Pan Hui(潘晖)a), Ke Fu-Jiu(柯孚久)a)b)†, Xia Meng-Fen(夏蒙棼)b)c), and Bai Yi-Long(白以龙)b)
a Department of Physics, Beihang University, Beijing 100083, China; b State Key Laboratory of Non-linear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China; cDepartment of Physics, Peking University, Beijing 100871, China
Abstract The formation and mechanical properties of amorphous copper are studied using molecular dynamics simulation. The simulations of tension and shearing show that more pronounced plasticity is found under shearing, compared to tension. Apparent strain hardening and strain rate effect are observed. Interestingly, the variations of number density of atoms during deformation indicate free volume creation, especially under higher strain rate. In particular, it is found that shear induced dilatation does appear in the amorphous metal.
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10528205, 10772012
and 10432050) and Chinese Academy of Sciences Innovation Program and
KJCX2-YW-M04.
Cite this article:
Wang Guang-Hai(王广海), Pan Hui(潘晖), Ke Fu-Jiu(柯孚久), Xia Meng-Fen(夏蒙棼), and Bai Yi-Long(白以龙) Study of mechanical properties of amorphous copper with molecular dynamics simulation 2008 Chin. Phys. B 17 259
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