Abstract
Molecular dynamics (MD) simulation has been widely applied in various complex, dynamic processes at atomistic scale, because an MD simulation can provide some deformation details of materials in nano-processing and thus help to investigate the critical and important issues which cannot be fully revealed by experiments. Extensive research with the aid of MD simulation has provided insights for the development of nanotechnology. This paper reviews the fundamentals of nano-machining from the aspect of material structural effects, such as single crystalline, polycrystalline and amorphous materials. The classic MD simulations of nano-indentation and nano-cutting which have aimed to investigate the machining mechanism are discussed with respect to the effects of tool geometry, material properties and machining parameters. On nano-milling, the discussion focuses on the understanding of the grooving quality in relation to milling conditions.
Highlights
Ultra-precision and complex miniaturised devices or components with nano-scale surface features are in growing demand with the rapid development of many industries, At the nano-scale, many important issues cannot be directly revealed by experimental means
Molecular dynamics (MD) simulation has been widely applied in various complex, dynamic processes at atomistic scale, because an MD simulation can provide some deformation details of materials in nano-processing and help to investigate the critical and important issues which cannot be fully revealed by experiments
The classic MD simulations of nano-indentation and nano-cutting which have aimed to investigate the machining mechanism are discussed with respect to the effects of tool geometry, material properties and machining parameters
Summary
Ultra-precision and complex miniaturised devices or components with nano-scale surface features are in growing demand with the rapid development of many industries,. At the nano-scale, many important issues cannot be directly revealed by experimental means. MD analysis as a powerful numerical tool has been widely used to provide some deformation details of workpiece materials in the development of nano-machining processes. An MD simulation allows for an in-depth understanding and interpretation of valuable physical phenomena. MD simulations have been applied in probing the micro-/nano-metric behaviour of materials, such as phase transformation, dislocation propagation and stress distribution caused by tool-work interactions. The objective of this paper is to review some fundamentals with respect to the application of MD simulations in the investigation of nano-cutting and nano-milling. Nano-indentation will be first discussed as this can facilitate basic understanding of MD and nano-machining
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