| Hamaker微观连续介质理论的数字密度和Hamaker常数分析 |
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| 引用本文： | 田文超,贾建援,陈光焱.Hamaker微观连续介质理论的数字密度和Hamaker常数分析[J].计算物理,2006,23(3):366-370. |
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| 作者姓名： | 田文超 贾建援 陈光焱 |
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| 作者单位： | 1. 西安电子科技大学机电工程学院, 陕西 西安 710071;2. 中国工程物理研究院西南电子工程研究所, 四川 绵阳 621000 |
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| 基金项目： | 中国科学院资助项目;中国博士后科学基金 |
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| 摘 要： | 针对Hamaker微观连续介质理论在微观接触力计算中存在的问题,根据Hamaker假设,用连续介质法计算2个原子之间的相互作用力,发现作用力同经典的Lennard-Jones势所反映的作用力不一致.通过分析数字密度,发现数字密度并非是如Hamaker所认为的常数,而是随间距变化的;并得到Hamaker微观连续介质理论仅在间距大于7倍的原子半径时才成立的结论.通过分析Hamaker常数,发现Hamaker常数也随间距变化.
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| 关 键 词： | Hamaker微观连续介质理论 数字密度 Hamaker常数 |
| 文章编号： | 1001-246X（2006）03-0366-05 |
| 收稿时间： | 2004-10-25 |
| 修稿时间： | 2005-07-01 |
Digital Density in Hamaker Micro Continuum Medium Principle and Hamaker Constant |
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| TIAN Wen-chao,JIA Jian-yuan,CHEN Guang-yan.Digital Density in Hamaker Micro Continuum Medium Principle and Hamaker Constant[J].Chinese Journal of Computational Physics,2006,23(3):366-370. |
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| Authors: | TIAN Wen-chao JIA Jian-yuan CHEN Guang-yan |
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| Institution: | 1. School of Elec-mechanical Engineering, Xidian University, Xi'an 710071, China;2. Southwest Institute of Electronic Engineering, Mianyang 621000, China |
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| Abstract: | Based on Hamaker's hypothesizes and Lennard-Jones potential,a model of rigid sphere-panel nano-contact was presented to solve microcollision and nanocontact problems.The adhesion equations between the sphere and the first layer atoms or the N layer atoms of the panel were obtained by a continuum method.It is shown that the Hamaker's micro continuum medium principle is held only as the interaction distance 7 times greater than the atomic radius. |
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| Keywords: | Hamaker micro continuum medium principle digital density Hamaker constant |
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