3D nano-scale cutting model for nickel material

Zone Ching Lin, Jen Ching Huang, Yeau Ren Jeng

研究成果: Article同行評審

37 引文 斯高帕斯(Scopus)

摘要

This paper proposes a method that combines molecular dynamics with finite element deformation model (MDFM) to calculate the stress and strain of a single crystal nickel material that occur during the nano-scale cutting by concial tool. The flow stress-strain curve used in the MDFM model was obtained by nano-scale tension simulation using molecular dynamics method in this paper. Since the Young's modulus of the nano-scale single crystal nickel material is different from macroscopic scale. Therefore, the Young's modulus of the single crystal nickel material used in the MDFM model was obtained through a nano-indentation test under very low indentation loading. The MDFM only requires the elastic-plastic constitutive equation. The position and displacement components of atom in any temporary situation during nano-scale cutting could be found by using the 3D MD simulation. The atom is regarded as a node and the lattice is regarded as an element. The shape function concept of FEM is applied to calculate the strain of element from atom displacement. After simulation, it can be found that the accumulation behavior of cutting chip done by nano-cutting is quite similar to macroscopic cutting. This paper also finds that residual stress and residual strain will remain on the machined surface of single crystal nickel after cutting.

原文English
頁(從 - 到)27-36
頁數10
期刊Journal of Materials Processing Technology
192-193
DOIs
出版狀態Published - 2007 十月 1

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 電腦科學應用
  • 金屬和合金
  • 工業與製造工程

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