Mechanical Properties of Machined Nanostructures
Three-dimensional molecular dynamics simulations have been carried out to predict the mechanical properties of a single crystalline copper with different scratching depths and no defects by EAM potential respectively. The mechanical properties for nanostructure with no defects and machined groove are investigated by various strain rates, scratched depths and scratching directions. Through the visualization technique of atomic coordination number, the onset and movement of defects in workpiece such as dislocations are analyzed under tensile loads. Work-harden formation, recrystallization behavior and the properties of rupturing process of nanostructure are exhibited at the atomic view. The relation between stress and the onset and evolvement of defects in specimen is analyzed for fundamental understanding the mechanical properties of nanostructure.
MD machined nanostructure tension Dislocation
梁迎春 陈家轩 陈明君 唐玉兰 白清顺
哈尔滨工业大学精密制造研究所 哈尔滨 150006 沈阳建筑大学 材料学院 沈阳 110168
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）