[1]邵传东,丁建国,倪浩浩,等.超精密加工机床空气静压主轴系统径向气膜刚度分子动力学模拟[J].南京理工大学学报(自然科学版),2018,42(02):142.[doi:10.14177/j.cnki.32-1397n.2018.42.02.002]
 Shao Chuandong,Ding Jianguo,Ni Haohao,et al.Molecular dynamics simulation on radial gas film stiffness ofaerostatic spindle system for ultra-precision machine tool[J].Journal of Nanjing University of Science and Technology,2018,42(02):142.[doi:10.14177/j.cnki.32-1397n.2018.42.02.002]
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超精密加工机床空气静压主轴系统径向气膜刚度分子动力学模拟()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
42卷
期数:
2018年02期
页码:
142
栏目:
出版日期:
2018-04-30

文章信息/Info

Title:
Molecular dynamics simulation on radial gas film stiffness ofaerostatic spindle system for ultra-precision machine tool
文章编号:
1005-9830(2018)02-0142-06
作者:
邵传东1丁建国1倪浩浩1阳 洪2丁 颖2
1.南京理工大学 理学院,江苏 南京210094; 2.中国工程物理研究院 机械制造工艺研究所,四川 绵阳 621900
Author(s):
Shao Chuandong1Ding Jianguo1Ni Haohao1Yang Hong2Ding Ying2
1.School of Science,Nanjing University of Science and Technology,Nanjing 210094,China; 2.Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang 621900,China
关键词:
分子动力学 超精密加工机床 径向气膜刚度 空气静压主轴系统
Keywords:
molecular dynamics ultra-precision machine tools radial gas film stiffness aerostatic spindle system
分类号:
TH133.3
DOI:
10.14177/j.cnki.32-1397n.2018.42.02.002
摘要:
针对计算流体力学对超精密加工机床空气静压主轴系统进行动力学分析时的大跨尺度建模问题,该文基于分子动力学模拟基本原理和相似理论,利用LAMMPS开源软件和雷诺相似准则建立了超精密加工机床空气静压主轴系统的分子动力学微观模型。通过与文献算例比较验证了该模型的准确性,并进行了仿真分析。结果表明,在一定范围内,空气静压主轴径向气膜刚度随气膜厚度的增大而非线性减小,随主轴转速的增大而非线性增大,随进气压力的增大而非线性增大。
Abstract:
In view of the large-span scale problem of the computing model when dynamic analysis for the aerostatic spindle system of an ultra-precision machine tool is conducted by the computational fluid dynamics(CFD),based on the molecular dynamics simulation and similarity theory,the molecular dynamics microscopic model of the aerostatic spindle system for the ultra-precision machine is established by using an open source software LAMMPS and the Reynolds similarity criterion,and it is validated by the example of the reference. The results show that the radial gas film stiffness for the aerostatic spindle system decreases nonlinearly with the increase of the gas film thickness,increases nonlinearly with the increase of the spindle speed,and increases nonlinearly with increase of the inlet pressure in the certain range.

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相似文献/References:

[1]朱 伟,肖继军,黄 辉,等.MD模拟温度对TATB和TATB/F_(2311) PBX力学性能的影响[J].南京理工大学学报(自然科学版),2007,(02):243.
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备注/Memo

备注/Memo:
收稿日期:2017-08-05 修回日期:2017-10-20
基金项目:国家科学挑战计划项目(JCKY2016212A506-0104); 中国工程物理研究院科研专项资助(9120602)
作者简介:邵传东(1991-),男,硕士生,主要研究方向:分子动力学仿真及振动控制,E-mail:707626686@qq.com; 通讯作者:丁建国(1962-),男,教授,博士生导师,主要研究方向:动力学计算与振动控制,E-mail:nustdjg@163.com。
引文格式:邵传东,丁建国,倪浩浩,等. 超精密加工机床空气静压主轴系统径向气膜刚度分子动力学模拟[J]. 南京理工大学学报,2018,42(2):142-147.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2018-04-30