3D nano-scale cutting model for nickel material

Zone Ching Lin, Jen Ching Huang, Yeau Ren Jeng

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)27-36
Number of pages10
JournalJournal of Materials Processing Technology
Volume192-193
DOIs
Publication statusPublished - 2007 Oct 1

Fingerprint

Nickel
Single Crystal
Young's Modulus
Single crystals
MD Simulation
Calculate
Flow Stress
Nanoindentation
Atoms
Molecular dynamics
Indentation
Residual Stress
Shape Function
Constitutive Equation
Elastic moduli
Molecular Dynamics
Model
Molecular Dynamics Simulation
Plastics
Chip

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

Lin, Zone Ching ; Huang, Jen Ching ; Jeng, Yeau Ren. / 3D nano-scale cutting model for nickel material. In: Journal of Materials Processing Technology. 2007 ; Vol. 192-193. pp. 27-36.
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3D nano-scale cutting model for nickel material. / Lin, Zone Ching; Huang, Jen Ching; Jeng, Yeau Ren.

In: Journal of Materials Processing Technology, Vol. 192-193, 01.10.2007, p. 27-36.

Research output: Contribution to journalArticle

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AB - 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.

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