A Combined Molecular Dynamics and Rigid-Plastic FEM Simulation of Atomic Level Cutting
Keiji Manabe, Manabu Isobe and Kanji Ueda
Faculty of Engineering, Kobe University, Rokkodai-cho, Nada-ku, Kobe-shi 657, Japan
An atomic-level cutting process is simulated using the combined molecular dynamics (MD) method and the rigid-plastic finite element method (RPFEM). The algorithm for combining the MD and RPFEM was developed. The MD solution of the atomic displacements and the nodal displacements obtained by the RPFEM analysis are combined in the vicinity of the tool edge, so an atomic-level cutting process is simulated. The transition process at the beginning of cutting a single crystal of copper with a diamond tool is simulated. In this calculation, the atomic behavior in the shear zone near the tool edge and the plastic flow of the chip can be analyzed simultaneously. The proposed MD-RPFEM hybrid simulation is considered to be effective in analyzing the atomic-order cutting process.
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