南京理工大学学报（自然科学版）2018，Vol.42Issue(2)：142-147,6.DOI:10.14177/j.cnki.32-1397n.2018.42.02.002
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
Molecular dynamics simulation on radial gas film stiffness of aerostatic spindle system for ultra-precision machine tool
摘要
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.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Key words
molecular dynamics/ultra-precision machine tools/radial gas film stiffness/aerostatic spindle system分类
机械制造引用本文复制引用
邵传东,丁建国,倪浩浩,阳洪,丁颖..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(2):142-147,6.基金项目
国家科学挑战计划项目(JCKY2016212A506-0104) （JCKY2016212A506-0104）
中国工程物理研究院科研专项资助(9120602) （9120602）
