分子動力学法によるナノ切削挙動の原子論的解析

概要

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The process of the diamond turning of (111) single-crystal copper was studied using molecular dynamics (MD) simulation. Even under sub-nanometric depth of cut conditions, activated slip systems can be determined by the Schmid factor, which is calculated from a given macroscopic cutting-force direction. This result suggests that slip deformation behavior in diamond-turned single-crystal silicon under a sub-micrometric depth of cut may be examined by MD simulation in the turning process of copper. This is because both materials have exactly the same {111} <110> slip system, and, furthermore, silicon can be deformed plastically through turning by activating only a few specific slip systems. The turning process of silicon based on the MD analyses was evaluated. The material removal process changed according to the kind of slip system activated, and this depended on the cutting conditions, such as shape cutting tool and depth of cut. MD analysis indicated that slip deformation on the (111) plane in parallel to the turned surface played an important role in realizing ductile-regime turning.
公益社団法人精密工学会の論文
1999-08-05