Study of Effect of Impacting Direction on Abrasive Nanometric Cutting Process with Molecular Dynamics

Based on the molecular dynamics (MD) theory, in this article, we made a simulation study on titanium nanometric cutting process at different cutting depths, and analyzed the changes of the cutting depth to the effects on the work piece morphology, system potential energy, cutting force and work piece temperature in this titanium nanometric cutting process. The results show that with the increase of the cutting depth, system potential energy, cutting force and work piece temperature will increase correspondingly while the surface quality of machined work piece will decrease.

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Molecular dynamics simulation of heat distribution during nanometric cutting process

2008 2nd IEEE International Nanoelectronics Conference ◽

10.1109/inec.2008.4585584 ◽

2008 ◽

Cited By ~ 2

Author(s):

Y. C. Liang ◽

Y. B. Guo ◽

M. J. Chen ◽

Q. S. Bai

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulation ◽

Cutting Process ◽

Dynamics Simulation ◽

Heat Distribution ◽

Nanometric Cutting

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Generation Mechanism of Micro/Nano Machined Surfaces Based on Molecular Dynamics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.97-101.3104 ◽

2010 ◽

Vol 97-101 ◽

pp. 3104-3107 ◽

Cited By ~ 2

Author(s):

Yu Lan Tang ◽

Qiang Liu ◽

Yu Hou Wu ◽

Ke Zhang

Keyword(s):

Molecular Dynamics ◽

Chip Formation ◽

Elastic Recovery ◽

Three Dimensional ◽

Cutting Process ◽

Three Dimensional Model ◽

Machined Surface ◽

Nanometric Cutting ◽

Force Curves ◽

Entire Depth

A three-dimensional model of molecular dynamics (MD) was employed to study the nanometric cutting mechanism of monocrystalline copper. The model included the utilization of the Morse potential function to simulate the interatomic force. By analyses of the snapshots of the various stages of the nanometric cutting process, the generation and propagation of the dislocations around the tool are observed. Some of these dislocations are observed to travel through the entire depth of the workpiece. Those that could most escape completely through the machined surface due to elastic recovery were found to introduce atom step on the machined surface. By analyses of the cutting forces during the entire nanometric cutting process, significant fluctuations are observed in the cutting force curves. The stress distribution plots of the various stages of the nanometric cutting process show that the mechanism of chip formation is significantly different from the conventional shear ahead of the tool in the case of a polycrystalline material. Most atoms ahead of tool are compressed, but forces of one or two layers atoms contact the cutting tool are tensile. With the chip formation, a small tensile zone ahead of tool generates in the compression zone and moves with the tool.

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The Nano-Cutting Mechanism Research of Polysilicon Based on Molecular Dynamics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.690-693.2559 ◽

2013 ◽

Vol 690-693 ◽

pp. 2559-2562

Author(s):

Ying Zhu ◽

Shun He Qi ◽

Zhi Xiang ◽

Ling Ling Xie

Keyword(s):

Molecular Dynamics ◽

Potential Energy ◽

Cutting Force ◽

Cutting Process ◽

Dynamics Simulation ◽

Cutting Mechanism ◽

Nanometric Cutting ◽

Mechanism Research ◽

Atom Position ◽

Dynamics Method

Molecular dynamics model of the polysilicon material under the micro/nanoscale is established by using molecular dynamics method, make variety of the typical defects distribute to the polysilicon model reasonable and relax the simulation model, obtain the system potential energy curves in the relaxation process and the atomic location figure after the relaxation. Conduct molecular dynamics simulation of nanometric cutting process relying on the development of simulation program, get instant atom position image and draw the cutting force curve. Discusses the typical defects impact on the polycrystalline silicon nanometric cutting process, those mainly include cutting force changes in the cutting process, potential energy changes and processed surface quality etc.

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Study of AFM-based nanometric cutting process using molecular dynamics

Applied Surface Science ◽

10.1016/j.apsusc.2010.05.044 ◽

2010 ◽

Vol 256 (23) ◽

pp. 7160-7165 ◽

Cited By ~ 59

Author(s):

Peng-zhe Zhu ◽

Yuan-zhong Hu ◽

Tian-bao Ma ◽

Hui Wang

Keyword(s):

Molecular Dynamics ◽

Cutting Process ◽

Nanometric Cutting

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Titanium Nanometric Cutting Process Based on Molecular Dynamics

Rare Metal Materials and Engineering ◽

10.1016/s1875-5372(16)30096-0 ◽

2016 ◽

Vol 45 (4) ◽

pp. 897-900 ◽

Cited By ~ 2

Author(s):

Ying Zhu ◽

Yincheng Zhang ◽

Shunhe Qi ◽

Zhi Xiang

Keyword(s):

Molecular Dynamics ◽

Cutting Process ◽

Nanometric Cutting

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MOLECULAR DYNAMICS SIMULATION OF NANOMETRIC CUTTING PROCESS

International Journal of Nanoscience ◽

10.1142/s0219581x06004905 ◽

2006 ◽

Vol 05 (04n05) ◽

pp. 633-638

Author(s):

Q. X. PEI ◽

C. LU ◽

F. Z. FANG ◽

H. WU

Keyword(s):

Molecular Dynamics ◽

Cutting Force ◽

Chip Formation ◽

Md Simulation ◽

Cutting Process ◽

Atomic Scale ◽

Dynamics Simulation ◽

Tool Geometry ◽

Nanometric Cutting ◽

Eam Potential

Nanoscale machining involves changes in only a few atomic layers at the surface. Molecular dynamics (MD) simulation can play a significant role in addressing a number of machining problems at the atomic scale. In this paper, we employed MD simulations to study the nanometric cutting process of single crystal copper. Instead of the widely used Morse potential, we used the Embedded Atom Method (EAM) potential for this study. The simulations were carried out for various tool geometries at different cutting speeds. Attention was paid to the cutting chip formation, the cutting surface morphology and the cutting force. The MD simulation results show that both the tool geometry and the cutting speed have great influence on the chip formation, the smoothness of machined surface and the cutting force.

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