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Effect of Crystal Orientations on Nanocutting Based on Quasicontinuum Multiscale Method

机译：基于准连续谱多尺度方法的晶体取向对纳米切割的影响

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摘要

Nanocutting is one of the most important ultraprecision methods to obtain complex optics with high quality finish.Molecular dynamics is widely used to investigate the nanocutting mechanism due to the nanometric cutting depth.For high efficiency and large scale simulation,the multiscale method is significantly necessary.Quasicontinuum (QC) multiscale method is utilized to study the effect of crystal orientation on nanometric cutting of single crystal copper with the embedded atom method (EAM).The results show that the dislocation generation emission and the distribution of residual stress in workpiece strongly depends on the crystal orientation and cutting direction.The cutting direction along [101] on crystal orientation (111) is recommended to fabricate the higher quality surface.Finally it is proved that QC method is an efficient approach to study the nanocutting mechanism.
机译：纳米切割是获得具有高质量光洁度的复杂光学器件的最重要的超精密方法之一。由于纳米切割深度的原因，分子动力学被广泛用于研究纳米切割的机理。为了实现高效率和大规模的模拟，多尺度方法是非常必要的。采用准连续谱（QC）多尺度方法研究了嵌入原子法（EAM）对单晶铜纳米切割的晶体取向影响，结果表明位错产生发射和工件中残余应力的分布主要取决于建议沿[101]沿晶体取向（111）的切割方向来制造更高质量的表面。最后证明，QC方法是研究纳米切割机理的有效方法。

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  • 来源
  • 会议地点 Tianjin(CN)
  • 作者

    Xiao-Wei Chen; Xiao-Dong Zhang; Feng-Zhou Fang; Min Lai; Fei-Fei Xu;

  • 作者单位

    Sate Key Laboratory of Precision Measuring Technology InstrumentsCentre of MicroNano Manufacturing Technology, Tianjin University, 300072, China;

    Sate Key Laboratory of Precision Measuring Technology InstrumentsCentre of MicroNano Manufacturing Technology, Tianjin University, 300072, China;

    Sate Key Laboratory of Precision Measuring Technology InstrumentsCentre of MicroNano Manufacturing Technology, Tianjin University, 300072, China;

    Sate Key Laboratory of Precision Measuring Technology InstrumentsCentre of MicroNano Manufacturing Technology, Tianjin University, 300072, China;

    Sate Key Laboratory of Precision Measuring Technology InstrumentsCentre of MicroNano Manufacturing Technology, Tianjin University, 300072, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TH15;
  • 关键词

    quasicontinuum; nanocutting; dislocation; residual stress; crystal orientations;

    机译：准连续谱;纳米切削;位错;残余应力;晶体取向;

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