| Discrete Element Method Numerical Modelling on Crystallization of Smooth Hard Spheres under Mechanical Vibration |
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| 作者姓名： | 安希忠 |
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| 作者单位： | School of Materials and Metallurgy, Northeastern University, Shenyang 110004 |
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| 基金项目： | Supported by the Australian Research Council. |
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| 摘 要： | The crystallization, corresponding to the fcc structure （with packing density p≈0.74）, of smooth equal hard spheres under batch-wised feeding and three-dimensional interval vibration is numerically obtained by using the discrete element method. The numerical experiment shows that the ordered packing can be realized by proper control of the dynamic parameters such as batch of each feeding ε and vibration amplitude A. The radial distribution function and force network are used to characterize the ordered structure. The defect formed during vibrated packing is characterized as well. The results in our work fill the gap of getting packing density between random close packing and fcc packing in phase diagram which provides an effective way of theoretically investigating the complex process and mechanism of hard sphere crystallization and its dynamics.
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| 关 键 词： | 离散元件 数字模拟 结晶 机械力学 |
| 收稿时间： | 2007-4-2 |
| 修稿时间： | 2007-04-02 |
Discrete Element Method Numerical Modelling on Crystallization of Smooth Hard Spheres under Mechanical Vibration |
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| AN Xi-Zhong.Discrete Element Method Numerical Modelling on Crystallization of Smooth Hard Spheres under Mechanical Vibration[J].Chinese Physics Letters,2007,24(7):2032-2035. |
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| Authors: | AN Xi-Zhong |
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| Institution: | School of Materials and Metallurgy, Northeastern University, Shenyang 110004 |
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| Abstract: | |
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| Keywords: | 61 43 Gt 61 43 Bn 81 05 Rm |
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