微机械纳米接触连续方法的建模和计算

计算物理 ›› 2004, Vol. 21 ›› Issue (1): 77-80.

微机械纳米接触连续方法的建模和计算

田文超, 贾建援

西安电子科技大学机电工程学院, 陕西西安 710071

收稿日期:2002-12-30 修回日期:2003-09-02 出版日期:2004-01-25 发布日期:2004-01-25
作者简介:田文超(1968-),男,副教授,博士生,从事微电子机械系统(MEMs)和纳米接触方面的研究.
基金资助:
陕西省自然科学基金(99X05);西安电子科技大学青年教师科研工作站(0404)资助项目

Nanocontact Continuum Model and Calculation of Micro-mechanic

TIAN Wen-chao, JIA Jian-yuan

School of Electro-Mechanical Engineering, Xidian University, Xi'an 710071, China

Received:2002-12-30 Revised:2003-09-02 Online:2004-01-25 Published:2004-01-25

摘要/Abstract

摘要： 为解决微机械中"微碰撞"、"纳米接触"问题,建立了纳米接触的刚性球-面模型,根据Hamaker3个假设和Lennard Jones势,利用连续方法推导出球同平面第1和第N层原子之间的作用力表达式,仿真出粘着力同原子层之间的关系,得出影响纳米接触的主要原子为接触区域少数几层原子的结论,从而为纳米接触、纳米摩擦的进-步研究提供理论基础.

关键词: 微机械, Hamaker假设, 纳米接触

Abstract: Based on three Hamaker hypothesizes and Lennard-Jones potential, the model of rigid sphere-panel nano-contact is presented to solve the micromechanic "microcollision" and "nanocontact" problems, and the adhesion equations between the sphere and the first layer atom or the N layer atom of the panel are obtained by continuum method. The conclusion shows that the principal atoms affecting nanocotact force are the minority layers closing the contact zone.

Key words: micromechanic, hamaker hypothesizes, nano-contact

中图分类号:

田文超, 贾建援. 微机械纳米接触连续方法的建模和计算[J]. 计算物理, 2004, 21(1): 77-80.

TIAN Wen-chao, JIA Jian-yuan. Nanocontact Continuum Model and Calculation of Micro-mechanic[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2004, 21(1): 77-80.