纳米加工分子动力学仿真应用及实例  

Application and Example of Nanometer Machining Molecular Dynamics Simulation

作　　者：赵恒华[1] 蔡光起[2] 

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [2]东北大学机械工程与自动化学院,辽宁沈阳110004

出　　处：《制造技术与机床》2008年第8期33-36,共4页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金(50475052);辽宁省自然科学基金(20022161)资助项目

摘　　要：详细介绍了国外分子动力学仿真技术在纳米加工中的应用情况。合理选择了超高速纳米磨削单晶铜和单晶铝的分子动力学仿真势函数,进行了纳米磨削分子动力学仿真实验,并对仿真结果进行了分析和研究,得出了超高速纳米磨削单晶铜和单晶铝时工件所能获得的极限表面粗糙度值,预测了超高速纳米磨削单晶铜时工件表面变形层的极限深度和所能达到的极限加工精度。International application situation of the molecular dynamics simulation technology in nanometer machining is introduced in detail. Potential function of molecular dynamics simulation of ultra - high speed nanometer grinding mono - crystalline copper and mono - crystalline aluminum is selected properly. Experiments of nanometer grinding molecular dynamics simulation are made out. Results of simulation are analyzed and researched. Ultimate surface roughness obtained by molecular dynamics simulation of ultra -high speed nanometer grinding mono- crystalline copper and mono -crystalline aluminum is confirmed. The ultimate depth of deformed layer and the ultimate machining precision are forecasted for ultra -high speed nanometer grinding mono- crystalline copper.

关 键 词：纳米磨削 成屑机理 分子动力学 仿真 

分 类 号：TG580.1[金属学及工艺—金属切削加工及机床] TB383[一般工业技术—材料科学与工程]