Journal
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
Volume 53, Issue 3, Pages 870-874Publisher
SCIENCE PRESS
DOI: 10.1007/s11431-009-0243-9
Keywords
molecular dynamics; nanometric cutting; temperature distribution
Funding
- National Natural Science Foundation of China [50675050]
- Outstanding Youth Fund of Heilongjiang Province [JC200614]
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Understanding the basic action of how material removing in nanoscale is a critical issue of producing well-formed components. In order to clarify thermal effects on material removal at atomic level, molecular dynamics (MD) simulations of nanometric cutting of mono-crystalline copper are performed with Morse, EAM and Tersoff potential. The effects of cutting speed on temperature distribution are investigated. The simulation results demonstrate that the temperature distribution shows a roughly concentric shape around shear zone and a steep temperature gradient lies in diamond tool, a relative high temperature is located in shear zone and machined surface, but the highest temperature is found in chip. At a high cutting speed mode, the atoms in shear zone with high temperature implies a large stress is built up in a local region.
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