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| Study of mechanical properties of amorphous copper with molecular dynamics simulation | |
| 引用本文： | 王广海,潘晖,柯孚久,夏蒙棼,白以龙. Study of mechanical properties of amorphous copper with molecular dynamics simulation[J]. 中国物理 B, 2008, 17(1): 259-263 |
| 作者姓名： | 王广海 潘晖 柯孚久 夏蒙棼 白以龙 |
| 作者单位： | Department of Physics, Beihang University, Beijing 100083, China;Department of Physics, Beihang University, Beijing 100083, China;Department of Physics, Beihang University, Beijing 100083, China;State Key Laboratory of Non-linear Mechanics (LNM),Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Non-linear Mechanics (LNM),Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;Department of Physics, Peking University, Beijing 100871, China;State Key Laboratory of Non-linear Mechanics (LNM),Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China |
| 基金项目： | Project supported by the NationalNatural Science Foundation of China (Grant Nos 10528205, 10772012and 10432050) and Chinese Academy of Sciences Innovation Program andKJCX2-YW-M04. |
| 摘 要： | 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. |
| 关 键 词： | 分子动力学 无组织性 张力 剪力 应变速率 |
| 收稿时间： | 2007-02-05 |
| 修稿时间： | 2007-04-28 |
Study of mechanical properties of amorphous copper with molecular dynamics simulation |
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| Wang Guang-Hai,Pan Hui,Ke Fu-Jiu,Xia Meng-Fen and Bai Yi-Long. Study of mechanical properties of amorphous copper with molecular dynamics simulation[J]. Chinese Physics B, 2008, 17(1): 259-263 | |
| Authors: | Wang Guang-Hai Pan Hui Ke Fu-Jiu Xia Meng-Fen Bai Yi-Long |
| Affiliation: | Department of Physics, Beihang University, Beijing 100083, China; Department of Physics, Beihang University, Beijing 100083, China;State Key Laboratory of Non-linear Mechanics (LNM),Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China; State Key Laboratory of Non-linear Mechanics (LNM),Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;Department of Physics, Peking University, Beijing 100871, China; State Key Laboratory of Non-li |
| Abstract: | The formation and mechanical properties of amorphous copper arestudied using molecular dynamics simulation. The simulations oftension and shearing show that more pronounced plasticity is foundunder shearing, compared to tension. Apparent strain hardening andstrain rate effect are observed. Interestingly, the variations ofnumber density of atoms during deformation indicate free volumecreation, especially under higher strain rate. In particular, it isfound that shear induced dilatation does appear in the amorphousmetal. |
| Keywords: | molecular dynamics amorphous tension shear strain rate effect |
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