基于多尺度仿真方法的单晶铝纳米切削过程研究  

Multiscale Simulation of Nanometric Cutting of Single Crystal Aluminium

作　　者：孙西芝[1] 陈时锦[1] 程凯[1] 

机构地区：[1]哈尔滨工业大学精密工程研究所,黑龙江哈尔滨150001

出　　处：《南京理工大学学报》2008年第2期144-148,共5页Journal of Nanjing University of Science and Technology

摘　　要：分子动力学切削仿真方法所能模拟的原子数量有限。为了扩大切削仿真规模,该文采用分子动力学与有限元相结合的方法,在QC(Quasicontinuum)方法程序内核的基础上,结合纳米切削仿真的特点,编制出纳米切削多尺度仿真程序。用该程序进行了单晶铝纳米切削过程的多尺度仿真,进而分析了刀具角度对切削过程的影响。仿真结果验证了纳米切削多尺度仿真的可行性。In order to break the quantity limitation of atoms involved in molecular dynamics simulation of nanometric cutting and enlarge the simulation size, this paper, combining the molecular dynamic with the finite elements and based on the core of the QC （quasicontinuum） program and the nanometric cutting features, develops the program used for multiscale simulation of nanometric cutting. In this paper, multiscale simulation of nanometric cutting of single crystal aluminum is conducted and the effect of tool rake angle on the nanometric cutting process is analyzed. Simulation results validate the feasibility of multiscale simulation of nanometric cutting.

关 键 词：分子动力学仿真 多尺度仿真 纳米切削 

分 类 号：TG501.1[金属学及工艺—金属切削加工及机床]